Digest for sci.electronics.repair@googlegroups.com - 10 updates in 4 topics

Ralph Mowery <rmowery28146@earthlink.net>: Dec 30 11:08PM -0500

In article <71i74ddt8vjkceobkqfvogt0kf7bm77aoj@4ax.com>,
jeffl@cruzio.com says...
> warranty period or operate the advertised number of hours.
 
> What I find disgusting is that Apple did not make the feature optional
> and controlled in the settings.
 
If it takes slowing down the Apple so the battery will last, the battery
is not meeting the standard. I can see it slowing down after the
battery has lasted as long as it is warranted to. There should be some
mention of that in the book that comes with it.
 
 
Seems that would be equal to a car that will only go 40 MPH after it
gets say 30,000 miles on it and is warrentied for 50,000.
harry newton <harry@at.invalid>: Dec 31 03:23PM

He who is Ralph Mowery said on Sat, 30 Dec 2017 23:08:57 -0500:
 
> mention of that in the book that comes with it.
 
> Seems that would be equal to a car that will only go 40 MPH after it
> gets say 30,000 miles on it and is warrentied for 50,000.
 
This article backs up your feelings.
 
Apple Deserves What It Gets From This Battery Fiasco
<https://lonesysadmin.net/2017/12/29/apple-deserves-gets-battery-fiasco/>
Phil Allison <pallison49@gmail.com>: Dec 30 04:45PM -0800

Tim R wrote:
 
---------------
 
 
 
> That makes sense. I have 3 cables that don't work, but an iPhone earbud does. The cable in use upstairs also worked, so maybe there's just enough variation from plug to plug.
 
** Iphone earbuds use FOUR way mini-plugs.
 
You vision impaired?
 
 
.... Phil
Tim R <timothy42b@aol.com>: Dec 30 07:16PM -0800

On Saturday, December 30, 2017 at 7:45:46 PM UTC-5, Phil Allison wrote:
 
> > That makes sense. I have 3 cables that don't work, but an iPhone earbud does. The cable in use upstairs also worked, so maybe there's just enough variation from plug to plug.
 
> ** Iphone earbuds use FOUR way mini-plugs.
 
Yes, I'm aware of that. The 4th contact handles a volume control for the iPhone. Apparently the three standard contacts are close enough to a 3 way to work in most miniplug jacks. I could be wrong.
 
> You vision impaired?
 
Yes, of course, I'm 65 with bifocals and cataracts. I insert the plug mostly by feel, and I need a headlamp working on dark surfaces.
 
 
> .... Phil
 
FWIW, I did some research on how to install Win 7 again, and it appears to be near impossible without the product key. That's long since lost, which is too bad.
 
Basically at this point I don't know for sure if it's a jack problem or a software problem. I tried plugging in my Fasttrack, a USB to audio converter, and it recognized it as fasttrack, but never gave me the option to output sound.
Michael A Terrell <mike.terrell@earthlink.net>: Dec 31 05:12AM -0500

Tim R wrote:
 
> FWIW, I did some research on how to install Win 7 again, and it appears to be near impossible without the product key. That's long since lost, which is too bad.
 
That's why I've been buying off lease Dell Optiplex 780 computers.
Shove a Dell restore disk into the drive, and let it take care of
everything, including installing the corporate key for XP or Win 7.
 
I just bought another on Ebay for $43.71 delivered. It has 4GB of
RAM, a 250 GB HD and a DVD-ROM. It will be used to control a Vinyl
cutter for a local company that makes canopies for art shows. I got
several XP restore disks for free, and I paid about $10 for the Dell Win
7 disk.
Fox's Mercantile <jdangus@att.net>: Dec 31 05:27AM -0600

On 12/30/17 9:16 PM, Tim R wrote:
> Yes, of course, I'm 65 with bifocals and cataracts.
 
Welcome to my world brother.
 
> FWIW, I did some research on how to install Win 7 again, and it
> appears to be near impossible without the product key.
 
That's not true, just go ahead and install. Then it will bitch
constantly about being a potentially counterfeit copy.
 
When you get tired of it bitching at you and refusing to update,
go here:
<https://www.bonanza.com/listings/Windows-7-Professional-Pro-64-bit-Product-Activation-key-Digital-Delivery/530077756>
I buy from Scotts758. Absolutely painless and simple.
<https://www.bonanza.com/booths/scotts758>
 
For $9, it beats wasting any time going through that pile of
"I'll just put this here where it's safe and I can find it again."
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Ralph Mowery <rmowery28146@earthlink.net>: Dec 31 09:59AM -0500

In article <9a-dnemn6bgIVNXHnZ2dnUU7-KXNnZ2d@giganews.com>,
jdangus@att.net says...
> <https://www.bonanza.com/booths/scotts758>
 
> For $9, it beats wasting any time going through that pile of
> "I'll just put this here where it's safe and I can find it again."
 
I just bought a new Dell laptop and wanted to run an older version of
Microsoft Office. It loaded but would not run the email part. I was
told when I bought the computer from Office Depot that my old copy would
not run under Win 10, The version was office XP (corporate license) and
I had it running on several other windows 10 computers. Sure enough the
mail part would not run. I got on ebay and looked around and found many
versions of Office 2016 keys for about $ 10 or less. Thinking it may be
a scam I thought what the heck, its lsee than $ 10 to find out.
Downloaded the program and they sent me the key in about 2 or 3 hours.
It could have been quicker but I did not check for it for that long. It
has been working just fine for a month and no doubt it will keep on
running. That money beat me trying to find out why the Win XP or 2007
version would not run correctly on the laptop version of win 10.
Terry Schwartz <tschw10117@aol.com>: Dec 30 06:18PM -0800

Return it? Those are give-aways. Toss it.
M Philbrook <jamie_ka1lpa@charter.net>: Dec 30 02:05PM -0500

In article <p2341o$jdb$1@dont-email.me>, sofaslug@invalid.invalid
says...
 
> Back in the 70s, I had someone steal one of those cheap Krako FM
> converters (for an AM radio) out of my Volkswagen bus. Whoever stole it
> left a dollar bill in it's place.
 
You most likely made money on the deal!
 
Years ago I had one of my cars broken into it had a CB, nice SWR meter.
Wasn't worth much to me but I did report it, cops come over and took a
look inside of my car. comes out with a wallet in his hands, "This
yours" ? Nope not mine.. The crook must of got his paints caught on the
seat and it slit just under the seat a little. I never noticed it
because I wasn't looking there.
 
it turned out to be my neighbor !
 
Jamie
"pfjw@aol.com" <pfjw@aol.com>: Dec 30 01:36PM -0800

On Friday, December 29, 2017 at 8:18:38 PM UTC-5, Michael Terrell wrote:

> That's almost as good as wrapping up a box of dog crap, and leaving
> it out as a trap. :)
 
True story: The last place we lived in before leaving NYC was on 190th Street not far from the Cloisters. Our neighbor had a very elderly German Shepherd, and she was quite elderly herself. One sad day, her dog died, and the only place she could take it (in Manhattan) was down towards Battery Park. So, she bundled the dog into a large suitcase - as people were wont to own back in the 1960s. Getting into the subway at 190th Street (A-line) is not so hard as there is an elevator from the street to the platform (well before ADA). However, at South Ferry, not so much. She faced these steps with an 80 pound dog. What should happen, but a "Nice Young Man" offered to carry it up the steps for her. And, promptly ran off with it.
 
There is justice in this world.
 
Peter Wieck
Melrose Park, PA
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Digest for sci.electronics.repair@googlegroups.com - 1 update in 1 topic

Tim R <timothy42b@aol.com>: Dec 30 08:08AM -0800

On Friday, December 29, 2017 at 11:23:08 PM UTC-5, Paul Hovnanian P.E. wrote:
> Paul Hovnanian mailto:Paul@Hovnanian.com
> ------------------------------------------------------------------
> I bet the human brain is a kludge. -- Marvin Minsky
 
That makes sense. I have 3 cables that don't work, but an iPhone earbud does. The cable in use upstairs also worked, so maybe there's just enough variation from plug to plug.
 
So you think over time the jack has depressed a bit, just enough to not make good contact? The answer then is probably to get sound out of the USB instead of the headphone jack.
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Digest for sci.electronics.repair@googlegroups.com - 25 updates in 7 topics

Tim R <timothy42b@aol.com>: Dec 29 03:25PM -0800

I've often run a stereo miniplug out to two RCA plugs into a stereo amp for an iPod, boombox, laptop, without problems. My main system runs that way, with a miniplug into the headphone out on a Win10 machine, into a decent stereo amp and floor speakers. I have another system running the USB out into an M-Audio interface, then RCA cables into that stereo. Both work great.
 
I just tried putting speakers on the rec room laptop where the wifi reaches.
 
Only one speaker works. So here was my troubleshooting order:
 
swapped the speakers, left for right. Nope, they both work, but only on the one side.
 
Swapped the stereo amp for a different one. Same results.
 
Okay, maybe it's the laptop port. Put in earbuds from my phone, both sides work.
 
Aha! It's the cable. Got two more miniplug to RCA cables, still only one side audio. Not the cable, unless I have 3 bad ones.
 
Then and only then went to google: common problem, adjust the speaker volume and balance settings and it goes away. Nope, still doesn't work.
 
Still could be the laptop jack. Carry it upstairs to the system known to work. Works fine up there. Great, it's fixed, carry it back down and ............... nope, won't work on the amp down there.
 
What am I missing? I've tried speakers, amps, cables, and software, I don't know where to go next. Oh, maybe should mention, this is an older laptop. It came with System 7 but when the harddrive crashed we couldn't get another 7 without paying the cost of another laptop so we put on XP.
jurb6006@gmail.com: Dec 29 04:32PM -0800

You can almost always download a replacement disk fro the manufacturer, or Microsoft. You will get an ISO file, this is needed top make the disk bootable. It takes a special burning program to actually burn the CD. I use Power to go. Freeware and n0t invasive.
 
I say this because you probably have a compatabiity issue. Windows XP has been out for a log time, there was no bluetooth. There was wireless but not bluetooth.
 
It's nice how they get you to pay to get something that is for free.
Tim R <timothy42b@aol.com>: Dec 29 04:42PM -0800

> You can almost always download a replacement disk fro the manufacturer, or Microsoft. You will get an ISO file, this is needed top make the disk bootable. It takes a special burning program to actually burn the CD. I use Power to go. Freeware and n0t invasive.
 
> I say this because you probably have a compatabiity issue. Windows XP has been out for a log time, there was no bluetooth. There was wireless but not bluetooth.
 
> It's nice how they get you to pay to get something that is for free.
 
Yes. I called the manufacturer. They asked for the product code from the box, which I'd saved. I read it to them and they said sorry, that was installed by the retailer, you'll have to pay full price for a new system.
mike <ham789@netzero.net>: Dec 29 06:43PM -0800

On 12/29/2017 3:25 PM, Tim R wrote:
 
> Then and only then went to google: common problem, adjust the speaker volume and balance settings and it goes away. Nope, still doesn't work.
 
> Still could be the laptop jack. Carry it upstairs to the system known to work. Works fine up there. Great, it's fixed, carry it back down and ............... nope, won't work on the amp down there.
 
> What am I missing? I've tried speakers, amps, cables, and software, I don't know where to go next. Oh, maybe should mention, this is an older laptop. It came with System 7 but when the harddrive crashed we couldn't get another 7 without paying the cost of another laptop so we put on XP.
 
WE have no idea the laptop details or the OS version.
Some random thoughts:
If you have a windows 7 COA on the laptop, you can download the bits
to make it work. I'm too lazy to look it up if you don't need it.
 
Did you update XP to SP3? They made a lot of changes over the years.
 
Did you try to find a better sound card driver for the laptop?
 
Sometimes the audio jack detects what's on there and sets itself up
accordingly. Try a 32 ohm resistor to ground on each audio line to see
if that helps.
Probably can be a lot bigger resistors, I just have no idea what the
threshold might be.
Ralph Mowery <rmowery28146@earthlink.net>: Dec 29 11:03PM -0500

In article <5f76f859-64dd-477a-9048-b6e3d8acee3e@googlegroups.com>,
jurb6006@gmail.com says...
 
> You can almost always download a replacement disk fro the manufacturer, or Microsoft. You will get an ISO file, this is needed top make the disk bootable. It takes a special burning program to actually burn the CD. I use Power to go. Freeware and n0t invasive.
 
> I say this because you probably have a compatabiity issue. Windows XP has been out for a log time, there was no bluetooth. There was wireless but not bluetooth.
 
> It's nice how they get you to pay to get something that is for free.
 
I am not sure how old my netbook is,but it has win XP on it and has
Bluetooth.
"Paul Hovnanian P.E." <paul@hovnanian.com>: Dec 29 08:24PM -0800

Tim R wrote:
 
[snip]
> don't know where to go next. Oh, maybe should mention, this is an older
> laptop. It came with System 7 but when the harddrive crashed we couldn't
> get another 7 without paying the cost of another laptop so we put on XP.
 
Old laptop may have a slightly recessed audio jack. So a standard mini plug
won't seat fully and make connection with left and right channel contacts in
the jack.
 
--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
I bet the human brain is a kludge. -- Marvin Minsky
Tim R <timothy42b@aol.com>: Dec 30 08:04AM -0800

On Friday, December 29, 2017 at 9:43:43 PM UTC-5, mike wrote:
> to make it work. I'm too lazy to look it up if you don't need it.
 
> Did you update XP to SP3? They made a lot of changes over the years.
 
> Did you try to find a better sound card driver for the laptop?
 
Sorry, I didn't include any system details because I was looking hardware first.
 
Because hardware is less frustrating to fix, not because of inherent logic.
 
If it matters, it is an ASUS K501, running XP Professional 2002 with Service Pack 3. CPU is a Pentium dual core T4400@2.2 Ghz. 2.96 Gb RAM. All this from clicking on the system folder. It doesn't describe the sound card but says there is VIA HD Audio, and Legacy Audio Driver. I tried to update, it told me it couldn't find any better driver.
N_Cook <diverse@tcp.co.uk>: Dec 30 01:12PM

GFS and WRF both have the heavy winds passing between Brest and Nantes,
then continuing over northern France.
But WRF has the secondary low curving more and breaking out in the St
Malo, Channel Islands area of sea. Then over Cherbourg peninslar going
along the north coast of France.
But who would bet on that track instead of continuing out to mid
channel? 1987 in back of mind.
N_Cook <diverse@tcp.co.uk>: Dec 30 01:14PM

On 30/12/2017 13:12, N_Cook wrote:
> along the north coast of France.
> But who would bet on that track instead of continuing out to mid
> channel? 1987 in back of mind.
 
ignore ,should have gone to
uk.sci.weather
Fox's Mercantile <jdangus@att.net>: Dec 30 07:34AM -0600

On 12/30/17 7:14 AM, N_Cook wrote:
>> channel? 1987 in back of mind.
 
> ignore ,should have gone to
> uk.sci.weather
 
It's ok Nigel, it still makes more sense than the idiots arguing over
smoke machines for testing BMWs and Apple batteries.
 
Jeff
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Mike Coon <gravity@mjcoon.plus.com>: Dec 30 03:25PM

In article <p283f3$g8c$2@dont-email.me>, diverse@tcp.co.uk says...
> > channel? 1987 in back of mind.
 
> ignore ,should have gone to
> uk.sci.weather
 
Or Specsavers? ;-)
 
Mike.
oldschool@tubes.com: Dec 29 11:02PM -0600

I have one of these USB hubs with several USB connectors, which plugs
into a single USB port on a computer. It dont work. If I plug in a flash
drive directly to the computer, I can access that drive. But if I plug
it into the hub, the drive never shows up. I tried this on 3 computers.
 
I opened that hub, and there is a circuit board, with each output port
connected to a trace on the board which goes to a black dot on the
board. I dont know what that "dot" is, but I assume it's a chip of some
sort, and it looks like the dot itself was some sort of epoxy placed in
the board.
 
This was a gift, and it's going to get returned to the store, but I am
just wondering what kind of circuit this is?
 
Until looking at the innards, I thought that these hubs were just a
direct connection to the input (from computer) USB. But I see there is
more to it....
mike <ham789@netzero.net>: Dec 29 10:33PM -0800


> Until looking at the innards, I thought that these hubs were just a
> direct connection to the input (from computer) USB. But I see there is
> more to it....
 
Which version of which operating system?
How old is the computer?
What happens when you try it on a different computer?
What does device manager say?
What happens when you boot a linux live CD?
Make/model of the hub? Somebody may have one and actually have
a direct answer.
There were hubs that required you to install a driver,
but that was a LONG time ago.
But "oldschool tubes" suggests you might have really old stuff ;-)
rickman <gnuarm@gmail.com>: Dec 30 03:03AM -0500


> Until looking at the innards, I thought that these hubs were just a
> direct connection to the input (from computer) USB. But I see there is
> more to it....
 
USB is a point to point interface unlike some versions of Ethernet (using
coax) or an RS-485 multipoint interface. To connect more than one device to
a USB port requires a hub. The hub has a chip which receives packets sent
from the computer as well as packets received from any of the down stream
ports, buffers them and retransmits them on the appropriate other port.
That multiport interface chip is what is under the blob of epoxy on your
board. They use a chip directly with no package because it saves a few
pennies.
 
When you plug the hub into your computer it should show up as a hub. Under
windows you can go into the device manager and find it there. If the driver
did not install correctly it will show with a yellow error symbol next to it
and be listed as an unidentified device. If it doesn't show in the device
manager list at all while the flash drive works in the PC port, the hub is
defective. If it shows up but with the driver error, you may need to search
the Internet to find a driver.
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
Rob <nomail@example.com>: Dec 30 11:04AM


> Until looking at the innards, I thought that these hubs were just a
> direct connection to the input (from computer) USB. But I see there is
> more to it....
 
There are hubs that come with a power supply so they can deliver more
power to the connected devices than can be supplied by a single port
at the computer, and there are hubs without powersupply.
 
It may be that yours has the powersupply misplaced and won't work
without it. Look for an extra connector on the case that is not a
USB input or output.
Jasen Betts <jasen@xnet.co.nz>: Dec 30 11:37AM

> the board.
 
> This was a gift, and it's going to get returned to the store, but I am
> just wondering what kind of circuit this is?
 
The blob conceals an silicon chip mounted on the board this type of
construction is called "Chip On Board" or "COB" the chip does the
signal routing, translation, and forwarding and needed to support
USB hubbing
 
> Until looking at the innards, I thought that these hubs were just a
> direct connection to the input (from computer) USB. But I see there is
> more to it....
 
Yeah, somehow they call it USB but electrically it's not what I would
consider to be a bus.
 
--
This email has not been checked by half-arsed antivirus software
"pfjw@aol.com" <pfjw@aol.com>: Dec 30 04:39AM -0800


> This was a gift, and it's going to get returned to the store, but I am
> just wondering what kind of circuit this is?
>>SNIP<<
 
The moment you opened the device, you lost the right to return it. Full stop.
 
Peter Wieck
Melrose Park, PA
bruce2bowser@gmail.com: Dec 30 02:12AM -0800

Mr. Man-wai Chang wrote:
 
> https://www.google.com.hk/search?q=computer+chassis+screw+thread+size
 
> And don't forget about Amazon:
 
> https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=screws+computer+chassis
 
Are you measuring in trade or metric? There's a conversion chart here:
 
-- http://elginfasteners.com/resources/metric-bolt-conversion-metric-to-standard-bolt-conversion/
Jeff Liebermann <jeffl@cruzio.com>: Dec 29 08:57AM -0800

On Fri, 29 Dec 2017 11:32:05 -0500, bitrex
>> an enzyme that regulates activity in your eyes.
 
>Interesting, never knew about that side effect. I'll report back my
>empirical findings after the upcoming New Year's weekend
 
At this point, I would normally scribble a variety of sexually
explicit observations and suggestions. However, this is a family
newsgroup and such things are unfortunately deemed unacceptable.
 
Technical details: I'm told that it's not a "blue shift" but rather a
"blue tint". Also, the color varies but is generally considered to be
cyan (between blue and green) and not blue.
 
Full disclosure: I've never noticed the blue tint effect, probably
because I was too busy and distracted at the time.
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
Harry Newton <harryne_wton@AlliOSusersJustGiveUp.com>: Dec 30 10:07AM

On Fri, 29 Dec 2017 08:57:24 -0800, Jeff Liebermann wrote:
 
> Full disclosure: I've never noticed the blue tint effect, probably
> because I was too busy and distracted at the time.
 
And all this time I thought I was looking through the world with
rose-tinted glasses!
Sofa Slug <sofaslug@invalid.invalid>: Dec 29 10:21AM -0800

On 12/28/2017 9:58 AM, Michael A Terrell wrote:
>> converters (for an AM radio) out of my Volkswagen bus. Whoever stole
>> it left a dollar bill in it's place.
 
>    Did they ever come back for their change? ;-)
 
Ha Ha ...no, but later while in college, I had a 4 track car stereo that
I hated. it didn't sound very good and was always eating tapes - a real
POS. Instead of throwing it away, I took it out of the dash and left it
on the passenger seat in a box with all the tapes.
 
When I returned from class later that day, the box was gone.
Michael A Terrell <mike.terrell@earthlink.net>: Dec 29 08:18PM -0500

Sofa Slug wrote:
> a real POS. Instead of throwing it away, I took it out of the dash
> and left it on the passenger seat in a box with all the tapes.
 
> When I returned from class later that day, the box was gone.
 
 
That's almost as good as wrapping up a box of dog crap, and leaving
it out as a trap. :)
Fox's Mercantile <jdangus@att.net>: Dec 29 11:02AM -0600

On 12/29/17 10:39 AM, David Farber wrote:
> That being said, I think you were implying it's still better to use the
> metal tabbed package and use insulating hardware which will improve the
> thermal transfer. Is that correct?
 
Just a wild guess here...
But I suspect the epoxy coating may have less thermal resistance
than a mica washer with the bare metal tab.
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
"David Farber" <farberbear.unspam@aol.com>: Dec 29 10:40AM -0800

Fox's Mercantile wrote:
 
> Just a wild guess here...
> But I suspect the epoxy coating may have less thermal resistance
> than a mica washer with the bare metal tab.
 
I suspect the difference will have minimal effect on the operation of the
mixer. I'll opt for the epoxy coated device.
 
Thanks for your reply.
--
David Farber
Los Osos, CA
John-Del <ohger1s@gmail.com>: Dec 29 04:35PM -0800

On Friday, December 29, 2017 at 12:02:38 PM UTC-5, Fox's Mercantile wrote:
> Jeff-1.0
> WA6FWi
> http:foxsmercantile.com
 
 
 
Fullpack transistors generally have a much lower wattage rating than their metal backed counterparts for that very reason.
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Digest for sci.electronics.repair@googlegroups.com - 14 updates in 5 topics

"David Farber" <farberbear.unspam@aol.com>: Dec 28 10:27AM -0800

>> insulate it.
> Huh, we buy either spendy teflon shoulder washers, or cheaper nylon.
> (with 4-40 screw.)
 
Spendy vs. cheaper. Very nice. ;-)
 
--
David Farber
Los Osos, CA
"David Farber" <farberbear.unspam@aol.com>: Dec 29 08:39AM -0800

Phil Allison wrote:
 
> Lots of ICs are made like this, with a penalty in the thermal
> resistance spec.
 
> ..... Phil
 
I meant to post the following to the group yesterday
---------------------------------------------------------------------
 
First, thanks for posting that pic.
 
I finally found out what was causing the roadblock in my search for the
LM7815/7915 in the epoxy case. STMIcroelectronics makes this part and it is
available at both Mouser and Digi-Key. The difference lies in the part
number for the epoxy case. The letter "M" is dropped from the part number.
They are L7815CP and L7915CP. Of course those numbers don't turn up when you
look for the original part number.
 
That being said, I think you were implying it's still better to use the
metal tabbed package and use insulating hardware which will improve the
thermal transfer. Is that correct?
 
Thanks for your reply.
 
--
David Farber
Los Osos, CA
harry newton <harry@is.invalid>: Dec 29 03:16AM

He who is harry newton said on Wed, 27 Dec 2017 17:05:03 +0000 (UTC):
> batteries were sold with intolerable (and unadvertised) performance decay.
 
> They "clearly came with intolerable performance decay." says The Verge.
> <https://www.theverge.com/2017/12/21/16806582/apple-battery-slowdown-science>
 
Apple basically admitted today they permanently chopped CPU speeds in half
because they were trying to secretly mask defective batteries that they
didn't want to pay for in-warranty claims.
 
December 28, 2017
A Message to Our Customers about iPhone Batteries and Performance
<https://www.apple.com/iphone-battery-and-performance/>
 
They desperately try to convince Apple gullibles that all batteries require
the need to be secretly, drastically, and permanently throttled (to half
the original CPU speeds) with this clever marketing document posing as an
engineering white paper.
 
iPhone Battery and Performance
<https://support.apple.com/en-us/HT208387>
 
Basically, what they say is that all batteries degrade but only Apple cares
enough about its customers to secretly, permanently, and drastically cut
the CPU performance in half.
 
The rest of the manufacturers simply replace defective batteries under
warranty. But Apple didn't want to honor the warranty claims.
 
Even now, they're *still* charging the customer $30 for what amounts to a
defective battery. After the end of 2018, you're fucked again.
 
The phones affected after iOS 10.2.1 are:
iPhone 6,
iPhone 6 Plus,
iPhone 6s,
iPhone 6s Plus,
iPhone SE,
iPhone 7, and
iPhone 7 (after iOS 11.2)
 
The secret is never to update iOS and this wouldn't have happened to you.
bitrex <bitrex@de.lete.earthlink.net>: Dec 28 10:36PM -0500

On 12/27/2017 11:48 AM, Jeff Liebermann wrote:
 
> This might be a serious problem for someone on
> Viagra, who's vision is shifted towards blue, and doesn't see any red.
 
Wait, what?
Jeff Liebermann <jeffl@cruzio.com>: Dec 28 08:34PM -0800

On Thu, 28 Dec 2017 22:36:07 -0500, bitrex
 
>> This might be a serious problem for someone on
>> Viagra, who's vision is shifted towards blue, and doesn't see any red.
 
>Wait, what?
 
Cyanopsia or blue tinted vision
<https://io9.gizmodo.com/why-viagra-tints-your-vision-blue-1685176169>
<https://www.zmescience.com/science/biology/why-viagra-makes-you-see-blue-0423432/>
 
Executive summary: Viagra makes your world blue because an enzyme
that regulates activity in your crotch happens to be very similar to
an enzyme that regulates activity in your eyes.
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
Jeff Liebermann <jeffl@cruzio.com>: Dec 28 08:41PM -0800


>Even the unsophisticated user can tell when his phone is getting slow. Many
>people will then trade it in not knowing this could easily be fixed.
 
I had a customer phone me today asking if I could find her a cheap
used iPhone 6 for her daughter, who was complaining that her iPhone 5
was "worn out". No sooner had she read that Apple was slowing down
older phones to preserve battery life, the daughter magically
discovered that her phone was suffering from "a slow battery" and the
phone was in need of an upgrade. This might eventually be beneficial
to Apple sales.
 
 
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
"pfjw@aol.com" <pfjw@aol.com>: Dec 29 05:06AM -0800

This is the same troll with the smoke machine and the BMW.
 
Don't feed the troll.
 
Peter Wieck
Melrose Park, PA
harry newton <harry@is.invalid>: Dec 29 02:52PM

He who is Jeff Liebermann said on Thu, 28 Dec 2017 20:34:09 -0800:
 
> Executive summary: Viagra makes your world blue because an enzyme
> that regulates activity in your crotch happens to be very similar to
> an enzyme that regulates activity in your eyes.
 
So the plumbing in the crotch opens up the world to your eyes?
 
Anyway, Jeff - did you read the fantastically *cleverly worded* apology
from Apple yesterday?
 
December 28, 2017
A Message to Our Customers about iPhone Batteries and Performance
<https://www.apple.com/iphone-battery-and-performance/>
 
What you have to admire is how utterly *cleverly* worded the "apology" is.
 
Just like a smart kid caught with his hand in the cookie jar, they are
clever in what they admit and what they don't admit even though everyone
knows they did it, not for the planned obsolescence (that was just a
bonus), but because they put the wrong battery in the wrong phone and
didn't want to honor the warranty.
 
Like all Apple Apologists, they can't come clean.
 
So they essentially apologized for the "misunderstanding". Heh heh.
 
They apologize for the "mis communication", heh heh...
 
And then they try to say all kids have their hands caught in the cookie
jar, with their idiotic white paper on batteries - which completely skirts
the issue that no other manufacturer on the planet was caught secretly,
*permanently*, and *drastically* cutting the CPU speeds (in half!).
 
The fact you can replace a defective battery for $38 after January still
doesn't solve the problem that they're the wrong batteries for the phones.
 
I *love* their clever apology - which literally screams they didn't do it
for planned obsolescence (they didn't - that was just a bonus) - and yet -
completely skirts the real reason they did it - which was they didn't want
to honor their battery warranty.
 
Since it's *still* the wrong battery for the phone, it's still a crime
(literally) that they force you to pay even $38 for a new battery.
 
Not only should the defective batteries be replaced for free, but, one year
after you put the new defective battery in the phone, you're fucked again.
 
I only speak fact.
bitrex <bitrex@de.lete.earthlink.net>: Dec 29 11:32AM -0500

On 12/28/2017 11:34 PM, Jeff Liebermann wrote:
 
> Executive summary: Viagra makes your world blue because an enzyme
> that regulates activity in your crotch happens to be very similar to
> an enzyme that regulates activity in your eyes.
 
Interesting, never knew about that side effect. I'll report back my
empirical findings after the upcoming New Year's weekend
harry newton <harry@is.invalid>: Dec 28 11:10PM

He who is Piet said on Thu, 28 Dec 2017 13:34:59 +0100:
 
 
> See second paragraph under Interpreting Results. Comparing devices
> with the same OS already has its problems, and you want to aggravate
> them by comparing Apples with Phones.
 
I understand that the benchmarks don't generally cross platforms, but the
$130 LG Stylo 3 Plus 32GB octacore phablet is similar in raw specs to the
$670 Apple iPhone 7 Plus 32GB quadcore phablet - so I was hoping to see how
they differed in performance.
 
The iPhone has half as many cores, but a faster clock speed for half of
those, while the LG has the same clock speed for 4 of its cores that the
iPhone has for 2 of its cores.
 
The iPhone has 1GB more RAM (at 3GB) while the LG raw specs are better than
the iPhone on almost all other hardware attributes.
 
Hence I wanted a one-to-one comparison of the two since I have access to
both.
"pfjw@aol.com" <pfjw@aol.com>: Dec 29 05:05AM -0800

I believe this is our same troll with the BMW problem. Seems to originate from the same source with the same style. Don't feed the troll.
 
Peter Wieck
Melrose Park, PA
Stephen Wolstenholme <steve@easynn.com>: Dec 29 02:50PM

On Fri, 29 Dec 2017 05:05:03 -0800 (PST), "pfjw@aol.com"
 
> Don't feed the troll.
 
You just did
 
--
http://www.npsnn.com
Andy Burns <usenet@andyburns.uk>: Dec 28 10:39PM

Charlie+ wrote:
 
> grandchildren Xmas presents, I didnt read the 2400 capacity claim (my
> goof), these sound a really bad buy if your right. Did you cycle them a
> few times prior to measurement? C+
 
Only cycled 2-3 times.
 
Previous LIDL red cells and black cells have been fine, the bad ones
here are mainly silver not multi-coloured, you'll certainly tell they're
"underweight" as soon as you pick them up if they're the same innards.
Michael A Terrell <mike.terrell@earthlink.net>: Dec 28 12:58PM -0500

Sofa Slug wrote:
 
> Back in the 70s, I had someone steal one of those cheap Krako FM
> converters (for an AM radio) out of my Volkswagen bus. Whoever stole
> it left a dollar bill in it's place.
 
 
Did they ever come back for their change? ;-)
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Digest for sci.electronics.repair@googlegroups.com - 14 updates in 4 topics

"Ron D." <ron.dozier@gmail.com>: Dec 27 01:38PM -0800

Plymouth hall pick-up. Been there done that.
 
1968 Chrysler. Would not go up a really steep hill. Temporary solution. Go around. real problem - Check valve popped out of fuel pump.
 
1982 Toyota. car warmed up. Turn off car for about 20 minutes (quick bite to eat). Really low idle when re-started. Had to cool for an extended time to work properly again. Rinse repeat. It constantly did this.
 
To prevent dieseling, a vacuum advance port was opened to the atmosphere (severe vacuum leak). The solenoid valve was mounted on top of the valve cover with limited cooling. It stuck every once and a while. Me Finding the problem was really tough.
 
Car ate clutches and/or throwout bearings. Professionally replaced (dealer) until I finally did it myself. A HUGE diameter bolt (~3/4 diameter metric style) was missing on the bell housing. It used two big bolts and multiple smaller ones (4-6).
 
Care stereo amplifier stolen and replaced lb for lb by lentils.
 
Muffler and pipe replaced professionally. Got home and it did not sound right. Found it on backwards. When to shop and they agreed, before I left, I started the car and it still did not sound right. Looked - still on backwards. Technician told boss that it fit better that way. Replacement pipe was bent improperly.
 
Mechanical fuel pump replacement off an interstate in a random development. Fuel pump push rod kept falling out when replacing the pump UNLESS you put grease on it first.
 
Headlights start blinking - on/off period about every 30 seconds. Lamp filament shorted - High to low beam.
tabbypurr@gmail.com: Dec 27 02:52PM -0800

On Wednesday, 27 December 2017 21:38:53 UTC, Ron D. wrote:
 
> Care stereo amplifier stolen and replaced lb for lb by lentils.
 
bizarre! I once had a car stereo I got for 30p, quite a good one and worked fine but the front was very cosmeticly damaged. Some idiot broke in and stole it. I doubt he got more than £1 for it.
 
 
NT
Sofa Slug <sofaslug@invalid.invalid>: Dec 28 07:53AM -0800


>> Care stereo amplifier stolen and replaced lb for lb by lentils.
 
> bizarre! I once had a car stereo I got for 30p, quite a good one and worked fine but the front was very cosmeticly damaged. Some idiot broke in and stole it. I doubt he got more than £1 for it.
 
> NT
 
Back in the 70s, I had someone steal one of those cheap Krako FM
converters (for an AM radio) out of my Volkswagen bus. Whoever stole it
left a dollar bill in it's place.
tabbypurr@gmail.com: Dec 28 08:23AM -0800

On Thursday, 28 December 2017 15:53:34 UTC, Sofa Slug wrote:
 
> Back in the 70s, I had someone steal one of those cheap Krako FM
> converters (for an AM radio) out of my Volkswagen bus. Whoever stole it
> left a dollar bill in it's place.
 
maybe they were krackers
 
 
NT
harry newton <harry@is.invalid>: Dec 28 11:31AM

What free cross-platform benchmark tools do you use to benchmark phones?
 
I bought a handful of Costco $130 Android LG Stylo 3 Plus phablets as
stocking stuffers that I wish to benchmark against my sister's $670 iPhone
7 Plus.
 
T-Mobile LG Stylo 3 Plus (aka TP450):
<https://www.t-mobile.com/cell-phone/lg-stylo-3-plus>
<http://www.lg.com/us/cell-phones/lg-TP450-stylo-3-plus>
<https://www.gsmarena.com/lg_stylo_3_plus-8694.php>
T-Mobile Apple iPhone 7 Plus:
<https://www.t-mobile.com/cell-phone/apple-iphone-7-plus>
<https://www.apple.com/iphone-7/specs/>
<https://www.gsmarena.com/apple_iphone_7_plus-8065.php>
 
I can compare them based on pure hardware specs but benchmarks are better:
<https://www.phonearena.com/phones/compare/LG-Stylo-3-Plus,Apple-iPhone-7-Plus/phones/10534,9816>
 
The problem is most Internet benchmark test results are platform specific:
<https://www.androidbenchmark.net>
 
And most free benchmarking tools seem to only work on one platform:
<https://www.greenbot.com/article/2843337/test-your-android-phones-performance-with-these-free-benchmarking-tools.html>
 
Hence the consumer-available cross-platform benchmark question:
Q: What free cross-platform benchmark tools do you use to benchmark phones?
"David Farber" <farberbear.unspam@aol.com>: Dec 27 12:31PM -0800

whit3rd wrote:
 
> Those regulators are available in fullpak (epoxy insulated tab),
> metal-tab-wth-hole, and short-metal-tab (for soldering to a surface
> mount "heatsink").
 
Yes, the tab is for heat sinking and your suggestion of using the Molex plug
and socket is very clever.
 
Thanks for your reply.
--
David Farber
Los Osos, CA
"David Farber" <farberbear.unspam@aol.com>: Dec 27 03:11PM -0800

Phil Allison wrote:
 
> Bolting the positive one straight to the chassis is likely to result
> in ground loop hum.
 
> ... Phil
 
Hi Phil,
 
The original ones do not have any insulating bushings or mica pads. They are
mounted to the chassis with 3mm bolts and some thermal grease. I contacted
Digi-Key but they could not tell me if their parts were insulated or not.
When I place my order, I will get the insulating pads and bushings just to
make sure.
 
By the way, you can get a schematic here.
http://music-electronics-forum.com/attachments/6789d1256948271-behringer_pmh2000_-et-.zip
 
Thanks for your reply.
--
David Farber
Los Osos, CA
John Robertson <spam@flippers.com>: Dec 27 06:06PM -0800

On 2017/12/27 12:31 PM, David Farber wrote:
 
> Yes, the tab is for heat sinking and your suggestion of using the Molex plug
> and socket is very clever.
 
> Thanks for your reply.
 
I would not agree with using a socket if the regulator flexes slightly.
You will run through the insertion limit number of the socket very
quickly. Rather, can you solder a flexible loop to the regulator leads -
assuming the PCB and the heat sink are not well joined so there is some
flex.
 
I have seen sockets used in similar situations in arcade games and the
failure rate is significant. Connectors are the principle point of
failure after all...
 
John :-#)#
 
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
ggherold@gmail.com: Dec 27 06:44PM -0800

On Wednesday, December 27, 2017 at 2:43:04 AM UTC-5, Phil Allison wrote:
> > packaged in a TO-220 case. The center tab is nonmetallic so it is insulated
> > from the chassis.
 
> ** The *mounting tab* is definitely metal, just coated in epoxy to insulate it.
Huh, we buy either spendy teflon shoulder washers, or cheaper nylon.
(with 4-40 screw.)
 
George H.
Phil Allison <pallison49@gmail.com>: Dec 27 08:43PM -0800

gghe...@gmail.com wrote:
 
---------------------
 
> > insulate it.
 
> Huh, we buy either spendy teflon shoulder washers, or cheaper nylon.
> (with 4-40 screw.)
 
** JRC make "full pack" versions of the popular 7815/7915, TO220 regs.
 
Types are JRC7815A and JRC7915A.
 
https://img.alicdn.com/imgextra/i3/TB1s_M9IpXXXXc_XVXXXXXXXXXX_!!0-item_pic.jpg
 
 
The pak is called a T220F
 
Lots of ICs are made like this, with a penalty in the thermal resistance spec.
 
 
..... Phil
Jeff Liebermann <jeffl@cruzio.com>: Dec 27 08:48AM -0800

On Wed, 27 Dec 2017 15:28:50 +0000 (UTC), harry newton
 
>"After replacing the battery, Geekbench showed that the scores had nearly
>doubled."
 
><http://nymag.com/selectall/2017/12/is-apple-slowing-down-iphones-with-aging-batteries.html>
 
Sure, but if Apple did NOT reduce consumption somewhere as the battery
aged, you would complain that the iPhone battery didn't survive the
warranty period or operate the advertised number of hours.
 
What I find disgusting is that Apple did not make the feature optional
and controlled in the settings.
 
When we're done complaining about the evil Apple, we can then switch
our focus to the evil Google, which extends runtime and battery life
by disabling display intensive features and reducing OLED display
brightness if it detects a weak battery.
<https://www.google.com/patents/US8407502>
See the "Summary" section. The phone still works, but all the fancy
features are disabled and you can't see what you're doing (only red
LED's are active). This might be a serious problem for someone on
Viagra, who's vision is shifted towards blue, and doesn't see any red.
 
Cutting features to enhance battery life is nothing new. Palm has a
patent for saving battery power by switching from battery guzzling
color, to a more economical monochrome:
"Method and Apparatus for Selectable Display Mode for Intelligently
Enhancing Battery Life"
 
Meanwhile, Intel offers CPU's that self-throttle if they draw too much
power, get too hot, or are in danger of turning off before the end of
the movie or big game. Most of the technology was inherited from
Transmeta:
"Adaptive power control"
<https://www.google.com/patents/US7100061>
<https://en.wikipedia.org/wiki/Transmeta>
 
I'm sure if I dig some more, I'll find other patents for ways to
generate longer battery life numbers at the expense of other features.
 
Hmmm... my battery is low and old. Maybe that's why I'm losing at
Solitaire?
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
tabbypurr@gmail.com: Dec 27 09:04AM -0800

On Wednesday, 27 December 2017 16:48:57 UTC, Jeff Liebermann wrote:
> generate longer battery life numbers at the expense of other features.
 
> Hmmm... my battery is low and old. Maybe that's why I'm losing at
> Solitaire?
 
Apple phones are very much aimed at people that know nothing about technology and don't want to learn. They're idiot proofed partly by key useful features not being available. One can criticise them, but tbh I reckon they know their market.
 
 
NT
harry newton <harry@is.invalid>: Dec 27 05:05PM

He who is Jeff Liebermann said on Wed, 27 Dec 2017 08:48:50 -0800:
 
> Sure, but if Apple did NOT reduce consumption somewhere as the battery
> aged, you would complain that the iPhone battery didn't survive the
> warranty period or operate the advertised number of hours.
 
Fair enough observation but the Materials Science experts seem to be
inferring a different take on that same sentiment, by stating that Apple
batteries were sold with intolerable (and unadvertised) performance decay.
 
They "clearly came with intolerable performance decay." says The Verge.
<https://www.theverge.com/2017/12/21/16806582/apple-battery-slowdown-science>
 
> What I find disgusting is that Apple did not make the feature optional
> and controlled in the settings.
 
Lawsuits argue Apple had to keep the permanent throttling to far less than
half the advertised speeds (from 1,400MHz to 600MHz) secret if the reason
was they didn't want to honor warranty claims.
 
<https://www.theverge.com/2017/12/20/16800058/apple-iphone-slow-fix-battery-life-capacity>

> our focus to the evil Google, which extends runtime and battery life
> by disabling display intensive features and reducing OLED display
> brightness if it detects a weak battery.
 
This is only related if it was done secretly, permanently, and drastically.
 
> See the "Summary" section. The phone still works, but all the fancy
> features are disabled and you can't see what you're doing (only red
> LED's are active).
 
Is this slowdown drastic (far more than half the advertised speeds)?
Is it secret?
Is it permanent (for any given battery)?
 
> This might be a serious problem for someone on
> Viagra, who's vision is shifted towards blue, and doesn't see any red.
 
As of December 11th, 2017, that problem may increase!
<https://www.goodrx.com/blog/generic-viagra-in-2017-sooner-than-expected/>
 
> color, to a more economical monochrome:
> "Method and Apparatus for Selectable Display Mode for Intelligently
> Enhancing Battery Life"
 
Is this slowdown drastic (far more than half the advertised speeds)?
Is it secret?
Is it permanent (for any given battery)?
 
> "Adaptive power control"
> <https://www.google.com/patents/US7100061>
> <https://en.wikipedia.org/wiki/Transmeta>
 
Is this slowdown drastic (far more than half the advertised speeds)?
Is it secret?
Is it permanent (for any given battery)?
 
> I'm sure if I dig some more, I'll find other patents for ways to
> generate longer battery life numbers at the expense of other features.
 
IF they're not secret, permanent, and drastic (throttled to far less than
half the claimed CPU speeds), then they're relevant.
 
Otherwise they're just red herrings.
 
> Hmmm... my battery is low and old. Maybe that's why I'm losing at
> Solitaire?
 
Nope. It's why that huge power outage a week ago by PG&E was caused by the
winds coming from the north instead of from the south like they usually do
where you live!
 
Seriously though ... since you are generally old-school and balanced, do
you really consider Apple's secret, permanent, and drastic (the cpu is
chopped to far less than half the claimed speeds) is equivalent to a
temporary, slight, and obvious slowdown?
 
Really?
rickman <gnuarm@gmail.com>: Dec 27 11:22PM -0500


>> Hmmm... my battery is low and old. Maybe that's why I'm losing at
>> Solitaire?
 
> Apple phones are very much aimed at people that know nothing about technology and don't want to learn. They're idiot proofed partly by key useful features not being available. One can criticise them, but tbh I reckon they know their market.
 
Even the unsophisticated user can tell when his phone is getting slow. Many
people will then trade it in not knowing this could easily be fixed.
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
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