Digest for sci.electronics.repair@googlegroups.com - 25 updates in 3 topics

Jolly Roger <jollyroger@pobox.com>: Jan 03 11:57PM

> County. He provides nothing constructive, just his never ending
> anti-Apple posts. I for one have decided to not respond to him,
> particularly given the toxicity, and of his posts to the Apple NGs.
 
I should too, and I often refrain, but sometimes he steps in such a huge
pile of his own shit, it's hard not to laugh.
 
> to be benign, and where he had used yet another nymshift. I did not
> believe that particular post was a troll, but one which sought an
> answer to a legitimate question.
 
He's *never* posted in the Apple newsgroups without a clear agenda
against the people in those newsgroups.
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
Savageduck <savageduck1@{REMOVESPAM}me.com>: Jan 03 04:12PM -0800

On Jan 3, 2018, Jolly Roger wrote
> > answer to a legitimate question.
 
> He's *never* posted in the Apple newsgroups without a clear agenda
> against the people in those newsgroups.
 
Agreed.
 
--
 
Regards,
Savageduck
nospam <nospam@nospam.invalid>: Jan 03 08:38AM -0500

In article <p2i0de$anm$1@gioia.aioe.org>, harry newton
 
> but remember
> this is an Apple-only problem
 
nope. it's a battery chemistry issue which affects android and any
other device that uses a battery.
 
there is *no* avoiding it. *every* battery ages.
 
<https://us.community.samsung.com/t5/Galaxy-Note-Phones/Note-4-shuts-off-
at-40-battery/td-p/54776>
The  note  4 shut down with 40% left I thought mine  was the only one
but I've heard others complaining about this  how fustrating is that
what's up that samsung ?
...
My phone shuts down at 50% I don't know what to do ??
...
New or old, internal battery makes no difference.   I've had
shutdowns at levels as high as 80%. Most notably during camera usage,
especially if flash is used.  I've resorted to always being connected
to a fast charge external battery. Sigh. 
...
A buddy of mine recently took note of something similar, especially
when using his camera as well. He ended up disabling Instagram and
the boomerang feature, and that did the trick for him on the random
restarts or shutting down. Not sure how that was even related, just
what he told me.
 
it's related because those apps were causing the battery to be pushed
beyond its limits, exactly the same as with iphones, at which point, it
shut down.
 
 
<https://forums.androidcentral.com/sprint-galaxy-s-ii-epic-4g-touch/2246
28-strange-battery-problem-need-help.html>
In each case, I was using it in some kind of high battery drain
function... either watching a movie or running GPS software.
In two of the three cases, this was started right after unplugging
the phone from the charger for the night, so I had a full charge,
but suddenly, without warning the phone just shuts off dead. No power
down animation, no nothing... just goes cold black dead.
In each case, I know I've had about 60-75% battery left just before
it died.
 
When I power up the phone, it beeps low battery, and say I have
between 1-3% power left and eventually powers down from low battery.
...
I had this issue as well. New battery fixed it, hadn't happened since.
...
Had this exact problem. Never had any battery issues until the JB
upgrade. Tried Factory Reset and that didnt help.
...
my S2 just shuts off without any notification and doesn't start until
i plug it to the charger and switch it on. This mostly happens after
2 minutes of playing games,listening songs or downloadin an app. What
should I do? Please help me
...
My phone is a HTC Desire S, which I upgraded to Android 4.0.4 a few
months ago (official update). The shutdowns and extreme power
drainage startet about a week ago. With a full battery my phone
reliably shuts down less than 5 minutes into a game. Then upon reboot
it reports ~6% battery life and often shuts down again.
...
My Galaxy J7 suddenly shut down, and could not restart by pushing the
power button.
...
My mobile switches off even at 70-80% of charging.and it doesn't
switch on even when I switch it on.
 
 
<https://forums.androidcentral.com/samsung-galaxy-note-4/610523-note-4-s
udden-battery-drain.html>
My Sprint Note 4 (running 5.1.1) has been working without issue for
the past year, but a strange power/battery/something issue happened
yesterday and today.
 
Both days, around the same time (between 5:00-6:00pm) my phone has
decided that it no longer has a charge and shuts off. Yesterday, the
phone went from roughly 35% > 10%, which alerted me of low charge >
0% and shutting off within around 30 seconds.
...
That's funny. My AT&T Note 4 does the exact same thing.
...
My note 4 does similar. I get maybe 1.5 hours of use out of it, then
at 30% boom it shuts down. Plug it in and it shows zero percent.
 
30% after 1.5 hours of use (ignoring the shutdown problem)? hah.
iphones can easily get 1.5 *days* of use.
JF Mezei <jfmezei.spamnot@vaxination.ca>: Jan 03 12:54PM -0500

On 2018-01-03 02:23, harry newton wrote:
 
> It's been proven already that Apple wasn't aware of the low-temperature
> issues so it's just yet another piece of the puzzle that clearly indicates
> Apple doesn't test their devices thoroughly enough.
 
I know Apple became aware of battery problem for 6s by March/April 2016,
so barely 6 months after product launch. Staff were instructed to tell
customers that it was normal for thw 6a to shutdown in cold.
 
By October, Apple Support was instructed to get customers to run the
remote diagnostics suite (with results sent back to Apple). And by end
of November, the battery recall was launched. (2016).
 
That recall was premised on a bad batch of batteries, so the customers
were given expectation that new battery would permanently fix problem.
It didn't.
 
Note that the "bad batch" did age much faster and exhibited the problem
within 5-6 months of product launch.
 
 
> What Samsung implemented for batteries is sort of what Apple needs to
> implement for their phones - which is a rigorous testing system that
> simulates what would happen in a year.
 
I am pretty sure that engineering within Apple would have been aware
that the battery was undersized for the type of power loads of the 6s
once you factopr in reduced battery amperage capacity as it ages. And it
is likely that marketing overruled this for the sake of keeping the 6s
as thin as the 6, making it sturdier (back pocket bending gate) and
adding a bigger taptic engine.
 
 
> Remember, Apple said they were totally blindsided by the iPhone 6 problems,
> which simply means they didn't test it because they were common.
 
They were not blindsighted. The bad batch simply made a problem they
would have been aware of surface well before they had predicted.
 
With the then expected replacement cycle of 2 years, they likely figured
that the average onwer might expect a couple of cold shutdowns during
the winter of year 1, and as phone would be replaced in fall of year 2,
wouldn't get the bad shutdowns on year 2.
 
Suspect they underestimated how soon the problem would surface.
 
 
BTW, one possible solution is similar to electric cars: Put a heater
in/under the battery.
JF Mezei <jfmezei.spamnot@vaxination.ca>: Jan 03 12:56PM -0500

On 2018-01-03 08:38, nospam wrote:
 
> nope. it's a battery chemistry issue which affects android and any
> other device that uses a battery.
 
 
Funny how the 6s PLUS doesn't have that. Same battery chemistry. Same
CPU and components. Oh, but while same chemistry, it has BIGGER Battery
which means that it is able to supply my amps than the small battery
when cold/old.
 
All phone may have smame/similar battery chemistry, but how the battery
is sized relative to power consumption needs of the phone makes a huge
difference.
 
The bigger Android phone have mega battteries like 5000-7000mAh compared
to the ~1750 on the 6s.
nospam <nospam@nospam.invalid>: Jan 03 01:52PM -0500

In article <fP83C.134079$4Z6.17401@fx41.iad>, JF Mezei
 
> > nope. it's a battery chemistry issue which affects android and any
> > other device that uses a battery.
 
> Funny how the 6s PLUS doesn't have that.
 
it absolutely does
harry newton <harry@at.invalid>: Jan 03 08:31PM

He who is JF Mezei said on Wed, 3 Jan 2018 12:56:27 -0500:
 
> difference.
 
> The bigger Android phone have mega battteries like 5000-7000mAh compared
> to the ~1750 on the 6s.
 
Everything you say is apropos, where nospam, as a classic Apple Apologist,
tries to intimate because all phones have batteries, that this
Apple-created Apple-only problem is inside of all phones.
 
That's like saying because all houses have paint, that lead paint is in all
houses if it's in just one house.
 
I don't know why facts are invisible to the Apple Apologists, but nospam
knows very well this is a specific problem for specific phones, just like
the Samsung exploding battery problem was a specific problem for a specific
phone.
 
As you aptly noted, Apple *knows* exactly what the problem is, and since
the solution is to fix the design, they decided to secretly take the
simpler way out ...
 
And for that, I predict they'll need to settle those lawsuits out of court
and then, when they have that behind them, they can come clean and just
make the customer harm good.
 
Hence I predict the following along that strategy:
1. Apple won't admit fault until they settle the lawsuits in court
2. Once they settle, the settlement will dictate the redress
 
I postulate that a perfectly acceptable redress for the owners harmed is
for Apple to provide a trade-in program of old phone to slightly larger
equivalent phone that doesn't have the same Apple battery problems.
 
Apple has enough money and customer loyalty to pull this off with aplomb.
Let's see if they take the true "courageous" decision.
 
I suspect they will because they will have to.
harry newton <harry@at.invalid>: Jan 03 08:39PM

He who is Jolly Roger said on 3 Jan 2018 06:25:53 GMT:
 
> Get some new material, old foolish troll.
 
Think about this question before you childishly retort.
 
Q: How much added *value* have you added to this adult conversation?
harry newton <harry@at.invalid>: Jan 03 08:39PM

He who is JF Mezei said on Wed, 3 Jan 2018 12:54:04 -0500:
 
 
> I know Apple became aware of battery problem for 6s by March/April 2016,
> so barely 6 months after product launch. Staff were instructed to tell
> customers that it was normal for thw 6a to shutdown in cold.
 
Except that it's not normal for a phone to shutdown in the cold. :)
 
I applaud you for being able to see facts.
 
You're not an Apple Apologist because your observations and opinions are
sane. Certainly no Apple Apologist could say what you just said.
 
IMHO, Apple spent more energy on how to hide the battery issues after they
were found, than on testing for them prior to launch.
 
> By October, Apple Support was instructed to get customers to run the
> remote diagnostics suite (with results sent back to Apple). And by end
> of November, the battery recall was launched. (2016).
 
The Apple battery recall was the right thing to do, just as any other
manufacturer would recall a defective device.
 
> That recall was premised on a bad batch of batteries, so the customers
> were given expectation that new battery would permanently fix problem.
> It didn't.
 
Again, you have the ability to see facts which appear to be invisible to
the Apple Apologists.
 
Apple was "incredibly specific" about the first recall issue but incredibly
vague about the 10.2.1 "fix". There's a reason for that since nothing
happens at Apple by accident.
 
Apple made a conscious decision to hide the facts, which will be proven in
court if the cases aren't settled out of court sooner.
 
> Note that the "bad batch" did age much faster and exhibited the problem
> within 5-6 months of product launch.
 
This is an interesting fact, where even Apple said there were multiple
problems that the customers found for them since Apple doesn't test their
devices long enough in the real world to find them on their own.
 
 
> I am pretty sure that engineering within Apple would have been aware
> that the battery was undersized for the type of power loads of the 6s
> once you factopr in reduced battery amperage capacity as it ages.
 
This is a good point, in that there isn't any engineering mystery here like
there was, initially, in the Samsung exploding battery recall ... so, it's
odd then that if Apple engineers knew what they were doing, then why did
Apple feel the need to *secretly* halve the performance of the CPU.
 
Do you think the engineers planned this all along?
 
> is likely that marketing overruled this for the sake of keeping the 6s
> as thin as the 6, making it sturdier (back pocket bending gate) and
> adding a bigger taptic engine.
 
Ummm....mmm... this makes sense. Nothing happens at Apple without MARKETING
knowing about it - as it's one of the most successfully marketed companies
on the planet.
 
It could very well be that, just like in the Volkswagen situation,
MARKETING decided the final specs, and engineering couldn't do it - so they
had to shoehorn in the secret halving of the CPU just to meet the spec.
 
I know that the handful of (155.7 x 80 x 7.4 mm) $130 LG Stylo 3 Plus
phones I bought for Christmas as gifts has a 3200 mAh battery, as does the
(159.7 x 78.1 x 7.6 mm) LG V20, while the (158.2 x 77.9 x 7.3 mm) iPhone 7
Plus has only a 2900 mAh battery (about 10% less capacity).
 
Maybe that tenth of a millimeter in thickness is what cost Apple customers
that 10% loss, out of the box, of their battery capacity?
 
<https://www.phonearena.com/phones/compare/LG-Stylo-3,Apple-iPhone-7-Plus,LG%20V20/phones/10337,9816,10202>
 
>> which simply means they didn't test it because they were common.
 
> They were not blindsighted. The bad batch simply made a problem they
> would have been aware of surface well before they had predicted.
 
I agree that it's a technical problem to test for "battery aging", and I
note that Apple went to extreme lengths to try to imply that all batteries
aged as fast as the iPhone batteries aged.... but it's a fact that this
problem that they felt the need to secretly throttle cpu speeds to less
than half within a year of use happens only on Apple devices, and only on
some of them.
 
So, no matter when Apple figured it out, the fact remains that they decided
to "solve" their problem by secretly halving CPU speeds, which is what
they're being sued for (rightfully so).
 
What I expect them to do is:
1. Not come clean until they can settle the lawsuits out of court
2. Then the lawsuits will dictate a proper remedy to the customer
 
Hint: Charging the customer to replace a defective battery is a lousy
remedy by all accounts.
 
> that the average onwer might expect a couple of cold shutdowns during
> the winter of year 1, and as phone would be replaced in fall of year 2,
> wouldn't get the bad shutdowns on year 2.
 
I have to disagree with your replacement lifecycle of 2 years, as I get far
more than that out of my phones. So do plenty of other people.
 
It's only Apple customers who have been trained to think a battery lasts
only two years. Did you see the Samsung statement I published for example?
It's a completely different expectation of battery life cycles.
 
In practice, the Android phones that have non-removable batteries (Nexus 5
was given away and is still working fine and the Google Moto G is also
working just fine) I gave as gifts years ago are still going strong.
 
My observation is that it seems only Apple customers feel that a battery
needs to be replaced after only two years of use. It's like saying a car
needs to be replaced after only two years of use. The perception works to
the manufacturer's advantage only.
 
> Suspect they underestimated how soon the problem would surface.
 
Like Volkswagon, they hit upon the "elegant" solution, but it was so
elegant, and cheap, that they had to do it secretly. :)
 
> BTW, one possible solution is similar to electric cars:
> Put a heater in/under the battery.
 
I think Apple knows all the solutions where they took the "elegant"
(secret) way out.
 
Now that the cat is out of the bag, I hope they just design the phones for
the batteries and vice versa. It's ridiculous that only Apple phones are
2-year replacement items. It's like having cars being replaced every two
years. It's wasteful.
Jolly Roger <jollyroger@pobox.com>: Jan 03 10:05PM

> He who is Jolly Roger said on 3 Jan 2018 06:25:53 GMT:
 
>> Get some new material, old foolish troll.
 
> Think about
 
Troll, troll, troll your boat...
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
Jolly Roger <jollyroger@pobox.com>: Jan 03 10:05PM


> Blah blah blah blah blah Apple Apologist, blah blah blah blah
 
Get some new material, old fool.
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
rickman <gnuarm.deletethisbit@gmail.com>: Jan 03 06:07PM -0500

Jolly Roger wrote on 1/3/2018 5:05 PM:
 
>>> Get some new material, old foolish troll.
 
>> Think about
 
> Troll, troll, troll your boat...
 
I think we can see who the troll is. Anyone who o feels the need to post
four times complaining about someone being a troll *is* a troll.
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
Jolly Roger <jollyroger@pobox.com>: Jan 03 11:15PM


>> Troll, troll, troll your boat...
 
> I think we can see who the troll is. Anyone who o feels the need to post
> four times complaining about someone being a troll *is* a troll.
 
"Gosh, I KNOW, right? And anyone who calls out a racist for being a
racist *is* racist, y'all!"
 
Bullshit reasoning. The asshole currently known as "Harry Newton" has
been trolling the Apple news groups and belittling complete strangers in
them literally for hours a day for years now. He constantly changes his
name to avoid kill filters and pollutes the otherwise peaceful Apple
news groups with lame trolls filled with lies and misguided opinions.
Here's an incomplete list (and counting) of his names:
 
Paul B. Andersen, Adair Bordon, Liam O'Connor, Juan Camilo Blanco,
Alphonse Arnaud, Danny D., Vinny Perado, Whitney Ryan, Tony Cito, Adam
H. Kerman, Werner Obermeier, Steven Bornfeld, Winston_Smith, Mitch
Kaufmann, Paul M. Cook, E. Robinson, Alice J., P. Ng, Tam Nguyen, VPN
user, Joe Clock, Marob Katon, Chris Rangoon, AArdvarks, Conradt, Gustl
Hoffmann, Henry Jones, Tatsuki Takahashi, AL, Horace Algier, Karl
Schultz, Arthur Conan Doyle, Algeria Horan, Horace Algier, Raymond
Spruance III, Martin Chuzzlewit II, John Harmon, Yanis Bernard, Stijn De
Jong, Abe Swanson, Misha Vasiliev, Tomos Davies, Chaya Eve, Lionel
Muller, Roy Tremblay, Frank S, Chaya Eve, Blake Snyder, harry newton,
Harold Newton
 
Multiple regulars in these news groups call him out on his lame-ass
trolls. But little, old *you* have decided to step in and support the
troll. Good work, there, junior!
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
rickman <gnuarm.deletethisbit@gmail.com>: Jan 03 06:19PM -0500

Jolly Roger wrote on 1/3/2018 6:15 PM:
 
> Multiple regulars in these news groups call him out on his lame-ass
> trolls. But little, old *you* have decided to step in and support the
> troll. Good work, there, junior!
 
No, I'm just calling it like I see it. You jumped into a reasonable
conversation making five (not four, my mistake) posts complaining about
troll behavior without indicating what was "trollish". Now you want to
argue about your trollish behavior and call me names. You are currently the
problem, not a cure. Why don't you stop being a troll and we can let the
conversation continue?
 
--
 
Rick C
 
Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998
Savageduck <savageduck1@{REMOVESPAM}me.com>: Jan 03 03:26PM -0800

On Jan 3, 2018, Jolly Roger wrote
 
> Multiple regulars in these news groups call him out on his lame-ass
> trolls. But little, old *you* have decided to step in and support the
> troll. Good work, there, junior!
 
Also, the cross posts to unrelated groups, and groups where he anticipates
some sort of support, and/or validation, are a pretty good clue as to the
trollish nature of posts from the Santa Clara nymshifter.
 
--
 
Regards,
Savageduck
Fox's Mercantile <jdangus@att.net>: Jan 03 05:41PM -0600

On 1/3/18 5:19 PM, rickman wrote:
 
> No, I'm just calling it like I see it.  You jumped into a
> reasonable conversation
 
There has been nothing reasonable about this conversation.
It's been 100% Harry against the world.
And anyone that even slightly disagrees with him is called
a variety of names.
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Savageduck <savageduck1@{REMOVESPAM}me.com>: Jan 03 03:43PM -0800

On Jan 3, 2018, rickman wrote
> argue about your trollish behavior and call me names. You are currently the
> problem, not a cure. Why don't you stop being a troll and we can let the
> conversation continue?
 
The source of the troll is the OP not JR, and guess who the OP is in this
thread. None other than the nymshifting troll from Santa Clara County. He
provides nothing constructive, just his never ending anti-Apple posts. I for
one have decided to not respond to him, particularly given the toxicity, and
of his posts to the Apple NGs.
 
Recently I have responded to one of his posts to r.p.d. which appeared to be
benign, and where he had used yet another nymshift. I did not believe that
particular post was a troll, but one which sought an answer to a legitimate
question.
 
--
 
Regards,
Savageduck
Jolly Roger <jollyroger@pobox.com>: Jan 03 11:50PM

>> troll. Good work, there, junior!
 
> No, I'm just calling it like I see it. You jumped into a reasonable
> conversation
 
On the contrary, your vaunted so-called "reasonable discussion" is part
of a campaign of pure troll posts about iOS throttling functionality
that was initially cross-posted to irrelevant newsgroups
(sci.electronics.repair, and android) by a well-known nym-shifting
Apple-hating troll with a LONG track record in the Apple newsgroups of
attacking complete strangers merely because they call him out on his
lies. Either you are unaware of this, or you are actively ignoring it.
Either way, you're wrong.
 
> making five (not four, my mistake) posts
 
Post counts for this thread (at the moment):
 
Harry: 16 (Under two different nyms, at that.)
Others: 15
Me: 4 (Oh my! This is a problem!)
 
> complaining about troll behavior without indicating what was
> "trollish"
 
Others have done a sufficient job of both debunking his lies and calling
out his trolls in this thread, but I guess they don't count for you. Or
do you not read anyone's posts but mine and "Harry's"?
 
> Now you want to argue about your trollish behavior and call me names.
 
If "junior" offends you, I'm sorry but you're a snowflake. Grow a
thicker skin. It was meant to convey you are new to the Apple news
groups; and I have little doubt you are since I don't recall seeing your
posts here in many years. If you think "junior" is bad, you should see
what the troll currently known as "Harry" has to say about the regulars
in the Apple news groups that call him out on his lies. It'll no doubt
blow your fragile mind. ; )
 
> You are currently the problem
 
Projection. Stop supporting established trolls.
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
Jolly Roger <jollyroger@pobox.com>: Jan 03 11:53PM

> anticipates some sort of support, and/or validation, are a pretty good
> clue as to the trollish nature of posts from the Santa Clara
> nymshifter.
 
"...but no let's ignore all of that and instead concentrate on why the
regulars in the Apple newsgroups are *complaining* about his trolling.
Clearly *that* is the problem here!"
 
Fucking idiot.
 
--
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.
 
JR
nospam <nospam@nospam.invalid>: Jan 03 06:49PM -0500

In article <p2joea$37m$3@dont-email.me>, rickman
> > troll. Good work, there, junior!
 
> No, I'm just calling it like I see it. You jumped into a reasonable
> conversation
 
there is no reasonable conversation with 'harry' or whatever other nym
he's using.
etpm@whidbey.com: Jan 03 11:47AM -0800

>(Probably why they are becoming obsolete).
 
>If however it's just that one CD that is causing problems, REPLACE the
>CD.
 
1. You can't play a CD on a record player, no matter how good the
cartdrige and needle are.
2. That should be AN MP3 player, not A MP3 player.
 
Since this group is aimed at repairing electronics I fail to see how
buying a new CD player will repair the one I have now.
 
The CD is not the problem, but is a possible diagnostic clue.
Eric
etpm@whidbey.com: Jan 03 11:50AM -0800

On Wed, 03 Jan 2018 15:34:27 +0000, Baron <baron@linuxmaniac.net>
wrote:
 
>> Eric
 
>Look for debris between the lens carriage and the magnet on the side
>that is sticking, or the suspension is twisted and its rubbing.
I'll check for debris with a magnifier, thanks. Am I correct in
assuming that the lens assembly is only supported by the 4 wires? That
there are no other suspension components that could be getting stuck?
Eric
Jon Elson <jmelson@wustl.edu>: Jan 03 03:29PM -0600

> this is happening? It looks to me like the lens carrier is just
> suspended by 4 spring wires. But maybe there is something else that
> might be dragging. Anybody know how the things are really made?
The lens/laser/sensor assembly is mounted on a veritcal slide and a focusing
servo runs it up and down until it gets the signal from the disc. It sounds
like the slide mechanism is sticking, if of that design. If totally
suspended by springs, and no vertical slide mechanism, there may be dirt, or
maybe the air blast bent the springs a bit. Anyway, it definitely sounds
like the focus mechanism is sticking, so see if you can find out why that is
happening.
 
Jon
Clive Arthur <cliveta@nowaytoday.co.uk>: Jan 03 04:11PM

> do they paint the stripes on resistors" on google, but all I got was
> links explaining how to READ color codes.
 
> Has anyone ever heard anything about this process?
 
Resistors are made from a clay-like material containing carbon or other
conductor in various amounts. Colourants are added, and the material is
rolled and layered into large 'pats', so for example a 4k7 resistor pat
might have cream, yellow, cream, violet, cream, red, cream, gold, cream
coloured layers. This is rolled to the correct thickness corresponding
to the final resistor length, then hollow punches form the resistor
bodies, usually several thousand from one pat. The better quality ones
are rolled for smoothness and low noise. The wire ends are fitted, the
resistors are baked and often varnished. For high accuracy resistors,
the depth of one wire end is adjusted on test before the baking stage.
 
Cheers
--
Clive
MOP CAP <email@domain.com>: Jan 03 11:54AM -0800

I explained once how stripes on DO-7 [about mid-way between a 1/4w and
1/2w resistors] diode bodies were painted.
You have paint troughs with the colors in use, each has a roller the
width of of the trough, against this you have a roller that tapers to
the width of the band. These in turn roll against a larger rubber wheel
and deposits the paint. This in turn rolls against the R or D.
 
 
On diodes the bands also indicated the polarity, so there was an
ingenious way to orientate them.
To measure the breakdown voltage of a diode you apply a small [5
micoamp current]. The diodes were fed into a slot, the current was
applied, if you measued a low voltage it dropped straight down.
If you measured a high voltage it went out the side into a tube that
brought it 180 deg. into the proper orientation.
CP
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