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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March 20, 2020 at 12:11 AM

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