Digest for sci.electronics.repair@googlegroups.com - 25 updates in 6 topics

Martim Ribeiro <MartimXRibeiro@meo.pt>: Feb 04 11:46PM

I'm confused by Comcast Comcast "Broadcast TV Fee" of $6.50 and the
"Regional Sports Fee" of $4.50 and the Samsung SX022ANM "thing".
 
I'm trying to help someone else who is in an apartment and moving to
another apartment in the same complex due to roomate issues, where the old
apartment has a $50/month 100Mbps service and the new apartment has an
existing $85/month 100Mbps with 135 TV channels.
 
On the TV channel setup, there are three things I don't understand:
1. What is the Samsung SX022ANM "thing"
2. Are these "fees" legit?
 
Can you just give me information on these two things so I'm better armed to
help? The apartment dwellers and I aren't technical and I never had cable
anyway since I'm on wisp.
Frank <"frank "@frank.net>: Feb 04 06:58PM -0500

On 2/4/2017 6:46 PM, Martim Ribeiro wrote:
> Samsung SX022ANM
 
Samsung is DVR box rental. Comcast has an ng where you might ask about all.
Michael Black <et472@ncf.ca>: Feb 04 12:10PM -0500

Michael Black <et472@ncf.ca>: Feb 04 12:13PM -0500

oldschool@tubes.com: Feb 04 01:00PM -0600

>warnings "change this capacitor right away, or else it may take other
>things with it". Those may not be that the capacitor is likely to fail,
>but that if the capacitor fails, it can do damage.
 
What you are saying here is true for almost everything produced. All
cars have certain common problems specific to the brand/model. Same for
other machinery, and for electronics and even plumbing faucets and so
on...
 
I would like to find out what problems are specific to the Hallicrafters
SX-99. Where is a good place to look?
 
 
>There were periods when a brand of capacitor came along and got heavy use,
>only later it's discovered that they don't have long life. It's those
>that are the issue, not "all capacitors".
 
I'd be interested in which of the old caps were known to have "issues".
or to fail. Sure, they are all old (in any tube equipmnent), and they
are paper caps, which are no longer made, but I'm sure some brands were
better or worse than others.
And just because newer caps are made from plastics rather than paper,
does not necessarily make them better. Plastics can have issues too. Not
to mention that everything made today is made for a short lifespan.
Considering that, if most of the old paper caps still work, 50, 60, or
70 years later, they obviuosly were not poorly made or a poor design.
I always say, "New does not necessarily mean Better". Today, this is
quite apparent in a lot of things. Old cars far outlast the new ones,
old homes were built better than new ones, and while many will disagree,
I'll take Windows XP, or even Windows 98, (I use both) any day over
Windows 8.x or 10. So, often times, new is NOT better and sometimes it's
worse.
 
 
>Nobody uses paper capacitors anymore, but those were used for audio
>coupling and bypass capacitors decades ago, and not only can go bad, but
>have limitations based on how paper capacitors are made.
 
One thing I've noticed is that all caps seem to be a lot smaller these
days. (For the same value and voltage). I'm taking a wild guess, when I
figure this is because paper was thicker than the plastic materials used
today. But is this really better? Thinner means that high voltages have
a shorter distance to arc across, causing a short. And which of these
plastics will still be good in 5 years, or 20 or 50 years? Paper caps
seem to have passed the test of time. We wont know if these newer
materials pass the test of time or not, until we get there.
 
I'm not saying any material is better or worse, because I am only
guessing, but it does appear that old technology, made from things like
steel, wood, brick and other natural materials, are lasting longer than
most plastics. It's like when Chevy started using plastic timing gears
in their engines, which soon proved to fail much sooner than the old
steel ones.
 
So, are the newer caps really better? I dont know... I can only go with
the advice of those in the repair end of the business, and that is all
based on time. The manufacturers always claim they have a better
product, because they want to make sales, so their words mean nothing.
 
When I finally do get to recapping this radio, I am still clueless what
type of modern caps to use. In the old days, they were all paper caps,
and it just came down to knowing which manufacturer had a better
reputation. But now there are multiple different plastics in use, which
makes it a lot harder to know what to use.
 
oldschool@tubes.com: Feb 04 01:21PM -0600

On Sat, 4 Feb 2017 08:56:42 -0600, Foxs Mercantile <jdangus@att.net>
wrote:
 
 
>To quote a good friend of mine, "There are only two kinds of paper
>dielectric capacitors. Those that are bad, and those that are going
>to be bad."
 
Everything will fail some time in the future..... It dont matter what it
is. But will it be tomorrow, or 100 years from now?
So, somtime in the future, every paper cap, as well as every modern cap
is going to fail. But at my age, I only have to think 2 or maybe 3
decades at most into the future. After that, it's someone else's
problem.
Nick Danger <nick@third.eye.net>: Feb 04 02:39PM -0500

On 2/4/2017 12:13 PM, Michael Black wrote:
 
> And with names like "Black Beauty" and "Orange Drop", who would question
> at the time that they weren't good products?
 
> Michael
 
I know from years of personal experience that "Black Beauties" were
*notoriously* bad. However, I always thought the Orange Drops were
pretty good. Not so?
oldschool@tubes.com: Feb 04 01:36PM -0600


>And with names like "Black Beauty" and "Orange Drop", who would question
>at the time that they weren't good products?
 
> Michael
 
It could have been PURPLE HAZE! <LOL>
oldschool@tubes.com: Feb 04 01:49PM -0600

On Sat, 4 Feb 2017 14:39:13 -0500, Nick Danger <nick@third.eye.net>
wrote:
 
 
>I know from years of personal experience that "Black Beauties" were
>*notoriously* bad. However, I always thought the Orange Drops were
>pretty good. Not so?
 
Back in the mid 60's into the 70s, I was told the black beauties were
one of the better caps made. But after reading a lot of websites about
caps, it now appears they have proven to be bad.
 
On the other hand, back then, and still now, it appears that the orange
drops were highly rated, as well as being some of the most costly.
Except for one poster in this thread, I have never heard anything bad
about them. One of the websites I was reading said they are one of the
brands to consider for recapping, but went on to say that there are
cheaper caps which work just as well.
 
Back then, I used a lot of orange drops as replacements and I never had
problems with them. I will say that I did not always like the fact that
their wires come out of the bottom, since for non-circuit board
applications, they were a little clumbsy to fit into some places, versus
the tubular caps with wires on the ends.
"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Feb 04 08:01PM

"Ralph Mowery" <rmowery28146@earthlink.net> wrote in message
news:MPG.32fed7a04e3c916a989829@news.east.earthlink.net...
> it is such an odd value as I doubt the extra .003 would be noticable in
> the circuits most of them are used in. As the tollorance on most of the
> electrolytics are very broad I don't understand the odd values either.
 
The preferred values were worked out so you can fill the spaces between them
with series/parallel combinations.
"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Feb 04 08:06PM

<oldschool@tubes.com> wrote in message
news:1o2a9cp0ormk0jqmmmrm0gcpvnetogkmt8@4ax.com...
>>they were used for precision and a specific tempco.
 
> I could see them failing in the HV sections of ol CRT televisions and
> monitors. Alot of stuff seemed to fail at those high voltages.
 
I've never seen mica in TV or monitor HV sections - and I can't think of any
advantage from using them for that.
"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Feb 04 08:15PM

<oldschool@tubes.com> wrote in message
news:k09b9cd4005htcn0her4bur83hpij5rhgk@4ax.com...
> That radio is 62 years old. (made in 1955). The seller said it works
> fine, (and I was sent a video of it working. I did detect a very slight
> hum. (But the video's audio is not the greatest).
 
The whole thread is based on a bit of a generalisation - you have to apply a
bit of common sense.
 
Generally; coupling and decoupling caps close to tubes that run hot are good
candidates.
 
Caps that may affect tuned circuits tend to be close to small signal tubes
that run much cooler.
oldschool@tubes.com: Feb 04 03:26PM -0600

>the oil filled variety. Indeed, if they are electrolytic, they aren't
>oil filled. Oil filled capacitors aren't polarized and many of them are
>good today. They were the high quality capacitors used in military and
 
I always thought those were oil filled, but I see I was wrong. I looked
on the web too, and it appears that most of them were filled with a
boric acid solution, which is not really harmful. They all had the tiny
vent hole in the top, and had a large threaded mounting on the bottom,
which required a sizable nut.
 
It's been years since I touched one of them. I only remember (vividly)
getting sprayed by one of them many years ago. It was boiling hot and it
hurt like hell. After that incident, I just replaced them before I even
pluggd in anyting that had that type of cap. (Or put a soup can over
them temporarily) They were probably the worst caps ever made.
 
Here is a pic I found online.
https://antiqueradio.org/art/Midwest18-3621.jpg
oldschool@tubes.com: Feb 04 04:15PM -0600

On Fri, 03 Feb 2017 16:26:47 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote:
 
>working test bench. I also find myself fixing 40+ years old test
>equipment as I do fixing radios etc. Looking at the old stuff, all it
>does is make me feel old and tired.
 
Thats all I have too, and some of it has not been used in years and may
likely no longer work. I'm not looking to get heavily into this stuff
anymore. My eyes are not that good anymore either. I just want a project
or two so I have something useful to do indoors during these long cold
midwest winters. In the warm weather I am mostly outdoors working on
building stuff and fixing antique machinery. But in winter it's either
stare at the lousy programming on tv, waste a lot of time reading (a lot
of crap) on the internet, or do something with rewards, which means
restoring some ancient electronics. I'll never fit in with the current
cellphone/facebook crowd.....
 
---
I overheard a young guy bragging about his new Iphone. I walked up and
told him I had something better, AN EARPHONE! :)
Nick Danger <nick@third.eye.net>: Feb 04 05:58PM -0500


>>> And with names like "Black Beauty" and "Orange Drop", who would question
>>> at the time that they weren't good products?
 
>>> Michael
 
On Sat, 4 Feb 2017 14:39:13 -0500, Nick Danger <nick@third.eye.net>
wrote:
 
>> I know from years of personal experience that "Black Beauties" were
>> *notoriously* bad. However, I always thought the Orange Drops were
>> pretty good. Not so?
 
On 2/4/2017 2:49 PM, oldschool@tubes.com wrote:
 
> Back in the mid 60's into the 70s, I was told the black beauties were
> one of the better caps made. But after reading a lot of websites about
> caps, it now appears they have proven to be bad.
 
I discovered that from experience. BBs were notoriously leaky, both
electrically and physically.
 
> On the other hand, back then, and still now, it appears that the orange
> drops were highly rated, as well as being some of the most costly.
 
I never worried about the cost -- I always figured the labor to put in a
good one or to put in junk was the same.
 
> Except for one poster in this thread, I have never heard anything bad
> about them.
 
Ditto and thus the reason for my original question.
 
> cheaper caps which work just as well.
 
> Back then, I used a lot of orange drops as replacements and I never had
> problems with them.
 
True in my case too. I also used them along with 88 mh toroidal
telephone loading coils to make Mark / Space filters for radio teletype
decoders --and the orange drops were very stable. (I know, I'm dating
myself in this day and age of software/sound card RTTY decoders). :-)
Foxs Mercantile <jdangus@att.net>: Feb 04 05:03PM -0600

On 2/4/2017 4:58 PM, Nick Danger wrote:
> teletype decoders --and the orange drops were very stable. (I
> know, I'm dating myself in this day and age of software/sound
> card RTTY decoders). :-)
 
You and me brother. You and me. ;-)
As a side note, I'm still playing with RTTY and using a real
machine. A Lorenz Lo-15c. ;-)
 
 
 
--
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com
Foxs Mercantile <jdangus@att.net>: Feb 04 05:05PM -0600

> since for non-circuit board applications, they were a little
> clumsy to fit into some places, versus the tubular caps with
> wires on the ends.
 
They are good parts. A bit over priced however. And yes, radial
leads instead of axial. Can be an issue when you're replacing
axial lead parts.
 
--
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com
Jim Mueller <wrongname@nospam.com>: Feb 04 11:46PM

On Sat, 04 Feb 2017 15:26:31 -0600, oldschool wrote:
 
> them temporarily) They were probably the worst caps ever made.
 
> Here is a pic I found online.
> https://antiqueradio.org/art/Midwest18-3621.jpg
 
Progress is incremental. Those capacitors had major advantages over what
came before. The "dry" electrolytics that followed them had further
advantages. That's how things go.
 
--
Jim Mueller wrongname@nospam.com
 
To get my real email address, replace wrongname with dadoheadman.
Then replace nospam with fastmail. Lastly, replace com with us.
Jon Elson <elson@pico-systems.com>: Feb 04 02:20PM -0600

Dave Platt wrote:
 
> In article <8IOdnWLPLNJPmwjFnZ2dnUU7-LvNnZ2d@giganews.com>,
> Jon Elson <jmelson@wustl.edu> wrote:
 
> Is this a plug-in breaker, or one that's wired in?
It is a GE "snap in" breaker in a GE breaker panel (load center).
The breakers have fingers that grip a bus bar in the panel, and a screw
terminal that holds the wire.
> has deteriorated (oxidized, worked loose, etc.) and it might be
> heating up at that point. If your home has any aluminum wiring, I'd
> be _very_ concerned about this possibility.
 
No, NO aluminum wiring! I checked before buying!
 
> I'd recommend a full re-check, with the mains power entirely
> disconnected.
The fact that after resetting, the breakers are now running cool tells me
the contacts have been cleaned by cycling them, and should be OK for the
next 10 years or so.
 
Jon
oldschool@tubes.com: Feb 04 04:54PM -0600

On Sat, 04 Feb 2017 14:20:34 -0600, Jon Elson <elson@pico-systems.com>
wrote:
 
>the contacts have been cleaned by cycling them, and should be OK for the
>next 10 years or so.
 
>Jon
 
I think I'd buy a spare breaker. They always fail in the middle of the
night on a weekend. They only cost $5 to $10.
 
I'd unplug them one at a time, and clean the contacts where they plug
into the bussbar on all of them. Also make sure you dont have some
device such as a refrigerator, sump pump etc, that may be cycling and/or
jammed. Probably would not hurt to remove and inspect every outlet on
that circuit to make sure there are no burnt wires or loose connections.
John Robertson <spam@flippers.com>: Feb 04 03:23PM -0800

> device such as a refrigerator, sump pump etc, that may be cycling and/or
> jammed. Probably would not hurt to remove and inspect every outlet on
> that circuit to make sure there are no burnt wires or loose connections.
 
I'd recommend pulling the breaker that was overheating and replace it
with a new one, moving it to an unused nockout spot. Chances are the bus
bar has been damaged as well as the breaker at the spot where the hot
breaker was put and you can't trust connections at that point on the bus
line any more.
 
Had this happen to a friends breaker box - burnt connection on the
breaker also damaged the bus bar at that point. New breaker in a new
spot and all was well. It probably hadn't been seated properly and just
gradually corroded enough to be noticeable.
 
John :-#)#
--
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
(604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
bruce2bowser@gmail.com: Feb 04 03:23PM -0800

In article <8IOdnWLPLNJPmwjFnZ2dnUU7-LvNnZ2d@giganews.com>,
jme...@wustl.edu says...
- hide quoted text -
> them clean. I have some other breakers in the shop that are used as
> shutoffs for various machines, and they never do this, I guess because the
> contacts are exercised routinely.
 
Maybe you could've taken them to the scrap yard, but since you decided to keep them, how did you cycle them to make their connects better?
"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Feb 04 09:20PM

"Andrew Rossmann" <andysnewsreply@no_junk.comcast.net> wrote in message
news:MPG.32ff963522ade9789898a3@news.eternal-september.org...
> although you can possibly use a CR2025 or CR2016 in a pinch if you
> happen to have one. The only difference is the thickness. 3.2mm, 2.5mm,
> 1.6mm.
 
Some of those older boards had a potted module with a 0.6" chip form factor.
 
IIRC: it was a Dallas RTC chip (which may have been more or less compatible
with the original Motorola chipset RTC). That had a couple of lithium coin
cells stuck on top and potted.
Jon Elson <elson@pico-systems.com>: Feb 04 02:29PM -0600


> If I live too long, Linux will be inevitable. I might have to take up some
> hobbies involving very fast cars, lighter than air hydrogen aircraft and
> the like. (I know how to make hydrogen)
My desktop at work once ran for about 480 days before a power failure
rebooted it. Typically, my desktops run about 100 - 180 days before there
is some need to reboot them. Have you ever had a crash on your Windows
system? I have had a few, when there were hardware failures, but they are
REALLY rare. I have a web server here that just hums along, even though it
is constantly attacked by various hackers. They haven't been able to get in
to do anything bad in ages.
 
Jon
avagadro7@gmail.com: Feb 04 11:10AM -0800

AND THE WIRE IS...
 
Consolidated
 
14(41)UL 1007/1569 105C CSA TR64 30C FT1 BLUE
 

for example, other spools state differently but same batch MO
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