Digest for sci.electronics.repair@googlegroups.com - 21 updates in 6 topics

Cursitor Doom <curd@notformail.com>: Nov 23 01:37AM

On Fri, 22 Nov 2019 07:54:53 -0800, Jeff Liebermann wrote:
 
> 1. Are you sure that it was the HP VNA that blew a capacitor or
> something? When you removed the case, was it lit up?
 
Thank you, Jeffrey. Not sure if you were able to read the thread right
through, but it's been established that the blown cap was an X2 rated one
fitted right across the incoming mains power line. It took a while to
confirm this was the actual culprit as it was well buried under a load of
spaghetti. When I finally got it out I was able to see it had literally
exploded which accounts for the report I heard from 30' away.
That cap has now been replaced and the device appears to be working fine
again, although after 10 years of storage there's no doubt some re-
aligning and whatnot to be done.
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Cursitor Doom <curd@notformail.com>: Nov 23 01:40AM

On Fri, 22 Nov 2019 04:22:06 -0600, Fox's Mercantile wrote:
 
 
>>> My opinion is that you're hack.
 
>> My opinion is you're Phil Alison and ICTFP.
 
> Oh look, the hacks are circling the wagons.
 
You can call me a hack as well if you like; I couldn't give a shit TBH.
I'm not very practical. I get the job done but it doesn't look as pretty
as some genius like yourself would leave it. But do I care? Nope! Because
the case goes back on and no one can see it anyway.
 
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Fox's Mercantile <jdangus@att.net>: Nov 22 08:11PM -0600

On 11/22/19 7:40 PM, Cursitor Doom wrote:
> You can call me a hack as well if you like;
 
I did.
 
> I couldn't give a shit TBH.
 
Actually, that's not true. If you honestly didn't
give a shit, you wouldn't have wasted the time to
defend yourself.
 
> I'm not very practical.
This too is obvious.
 
> But do I care? Nope! Because the case goes back on
> and no one can see it anyway.
 
No, of course you don't care. That's because you have
zero pride in your work. And the refusal to even try
to improve your skill set, just proves what I said.
You're hack. And apparently quite proud of it.
 
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
tabbypurr@gmail.com: Nov 23 01:42AM -0800

On Saturday, 23 November 2019 02:11:38 UTC, Fox's Mercantile wrote:
 
> Actually, that's not true. If you honestly didn't
> give a shit, you wouldn't have wasted the time to
> defend yourself.
 
he didn't 'defend himself' he explained his position
 
 
> No, of course you don't care. That's because you have
> zero pride in your work. And the refusal to even try
> to improve your skill set,
 
I've read enough of CD's posts to know neither of those is true.
People like you are 100% sure they know what's what even when they don't have the relevant facts. Same old.
Fox's Mercantile <jdangus@att.net>: Nov 23 08:27AM -0600

> he didn't 'defend himself' he explained his position
 
"When I use a word," Humpty Dumpty said, in rather a
scornful tone, "it means just what I choose it to mean—
neither more nor less." "The question is," said Alice,
"whether you can make words mean so many different things."
"The question is," said Humpty Dumpty, "which is to be
master—that's all."
> is true. People like you are 100% sure they know what's
> what even when they don't have the relevant facts. Same
> old.
 
You have a reading comprehension problem.
Coupled with an obsession of always being right.
Especially when you aren't.
 
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
tabbypurr@gmail.com: Nov 23 01:38AM -0800

On Friday, 22 November 2019 12:07:15 UTC, John-Del wrote:
 
> > lol. You can't help yourself can you. I didn't even mention what I do or can do.
 
> Sure you did. You asked *me* "...how you (meaning me) remove caps from paper based boards with zero board damage rate."
 
> This indicates you can't.
 
yawn
Fox's Mercantile <jdangus@att.net>: Nov 23 08:18AM -0600


>> Sure you did. You asked *me* "...how you (meaning me) remove caps from paper based boards with zero board damage rate."
 
>> This indicates you can't.
 
> yawn
 
To a hammer, everything looks like a nail.
To a hack, everything looks like a can't.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
aadha874@gmail.com: Nov 23 01:49AM -0800

> Solution Manual and Test bank Absolute Java (6th Ed., Walter Savitch)
> Solution Manual The Art and Science of Java (Eric Roberts)
> Solution Manual Building Java
 
i want Solution Manual Electronic Principles (8th Ed., Albert Malvino, David Bates my email aadha874@hmail.com
Cursitor Doom <curd@notformail.com>: Nov 22 07:50PM

Gentlemen,
 
I refer to you this photo of the internals of a typical modern cheap and
nasty blanket controller. All the components it uses are shown on this
board: just 5 diodes, 3 resistors and some 'mystery component' whose
function is presumably to sense overheating from the two resistors it's
between and cut-back the mains voltage to the blanket itself if needed.
 
https://tinyurl.com/t7s6og8
 
 
Question is, what is the correct name for this 'mystery component' and
what should it read resistance-wise when cold?
 
Thanks!
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Cursitor Doom <curd@notformail.com>: Nov 22 07:53PM

> Question is, what is the correct name for this 'mystery component' and
> what should it read resistance-wise when cold?
 
... and (I forgot first time around)... why have they put a couple of
turns in each of the leads?
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Andy Burns <usenet@andyburns.uk>: Nov 22 08:17PM

Cursitor Doom wrote:
 
> https://tinyurl.com/t7s6og8
 
> Question is, what is the correct name for this 'mystery component'
 
PTC thermistor?
thermal fuse?
 
<http://www.aolittel.com/sale-10973142-aupo-p3-f-pico-subminiature-pellet-ceramic-thermal-fuse-tf-cutoff-125c-250v-2a-axial-leaded-for-air-.html>
Ralph Mowery <rmowery28146@earthlink.net>: Nov 22 04:11PM -0500

In article <qr9e6p$7f6$1@dont-email.me>, curd@notformail.com says...
 
> Question is, what is the correct name for this 'mystery component' and
> what should it read resistance-wise when cold?
 
It might be a simple fuse. See if the resistance is zero/near zero when
warm and cold. Can not tell from the photo, but looks tohave a 7A over
the 120 volt.
Cursitor Doom <curd@notformail.com>: Nov 22 09:53PM

On Fri, 22 Nov 2019 20:17:25 +0000, Andy Burns wrote:
 
> PTC thermistor?
> thermal fuse?
 
> <http://www.aolittel.com/sale-10973142-aupo-p3-f-pico-subminiature-
pellet-ceramic-thermal-fuse-tf-cutoff-125c-250v-2a-axial-leaded-for-
air-.html>
 
Bingo, Andy! Good call.
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Cursitor Doom <curd@notformail.com>: Nov 22 09:54PM

On Fri, 22 Nov 2019 16:11:31 -0500, Ralph Mowery wrote:
 
> It might be a simple fuse. See if the resistance is zero/near zero when
> warm and cold. Can not tell from the photo, but looks tohave a 7A over
> the 120 volt.
 
It's actually 2A in this case. Andy's suggestion was correct. But like
you say, the resistance should be pretty low whereas it's actually
infinite, so looks like it's blown.
 
 
 
--
This message may be freely reproduced without limit or charge only via
the Usenet protocol. Reproduction in whole or part through other
protocols, whether for profit or not, is conditional upon a charge of
GBP10.00 per reproduction. Publication in this manner via non-Usenet
protocols constitutes acceptance of this condition.
Starfella <starfella@starfella.net>: Nov 22 06:49PM -0500

On 11/22/19 2:50 PM, Cursitor Doom wrote:
 
> Question is, what is the correct name for this 'mystery component' and
> what should it read resistance-wise when cold?
 
> Thanks!
 
Not sure about the name of the component, but I will say that today's
electric blankets are awfully poor made. Years ago, when I had one
while growing up, it lasted for at least 10 years before someone threw
it away during cleaning. As an adult, I purchased a Sunbeam brand about
five years ago and I've never had one last more than 6-8 weeks! The
only type of heating blanket I've found in recent times that does last
are electric throws. I have two, purchased about 5 years ago, and with
heavy use, they still work fine. Problem is that they are a bit too
small for bed use although I make them work that way.
whit3rd <whit3rd@gmail.com>: Nov 22 10:34PM -0800

On Friday, November 22, 2019 at 11:50:53 AM UTC-8, Cursitor Doom wrote:
 
> I refer to you this photo of the internals...
 
> Question is, what is the correct name for this 'mystery component' and
> what should it read resistance-wise when cold?
 
It's either an energency overtemperature cutoff (like a fuse), or a thermal
switch that repeatedly time-cycles according to the
heating/cooling time constant of its companion resistors.
 
It has a '2A' rating, not a temperature rating, so probably NOT
the emergency cutoff. Maybe a PTC resistor (solid state 'switch').
 
The diodes presumably send current to heating element A on
positive half-cycles, and heating element B on negative half-cycles
(so as to retain some function if one element fails open-circuit).
marty <m@m.org>: Nov 23 06:08PM +1100

On 23/11/19 5:34 pm, whit3rd wrote:
 
> The diodes presumably send current to heating element A on
> positive half-cycles, and heating element B on negative half-cycles
> (so as to retain some function if one element fails open-circuit).
 
It's cactus, throw the thing out.
tabbypurr@gmail.com: Nov 23 01:45AM -0800

On Friday, 22 November 2019 23:49:28 UTC, Starfella wrote:
> are electric throws. I have two, purchased about 5 years ago, and with
> heavy use, they still work fine. Problem is that they are a bit too
> small for bed use although I make them work that way.
 
10 years? I grew up with one several times that old.
 
 
NT
John Robertson <spam@flippers.com>: Nov 22 10:54AM -0800

Anyone have a copy of the operators manual (with schematics) for the
Sencore Video Analyzer 48? I have the Speed Test Set-Up Booklet
(physical, not PDF).
 
Trying to get mine running properly for servicing TVs used in video
games from the early 70s.
 
Bitsavers, archive.org, and other online resources sources don't have
this. The only ones I found were in a Google Drive link that has gone
invalid.
 
As I track these down I will host them on TTL (Tech Tools List archive).
 
Thanks!
 
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."
etpm@whidbey.com: Nov 22 09:06AM -0800

On Fri, 22 Nov 2019 13:09:58 +1100, Clifford Heath
>> Eric
 
>How in heck do yu expect help with a decompiler when you haven't told
>anyone what type of CPU it is?
Well, that's why I'm asking for help. I know hardly anything about
this stuff.
Eric
etpm@whidbey.com: Nov 22 09:07AM -0800

On Thu, 21 Nov 2019 23:59:31 -0800 (PST), whit3rd <whit3rd@gmail.com>
wrote:
 
 
>> > "The control in question is a FANUC 3T."
 
>A manual found online says the 3T master board uses an 8086, so it'll decompile
>as an 8088 would (different bus, but same opcodes).
Thanks You. Now maybe I can find something to work. This stuff is way
out of my experience but with some guidance I'm hoping to be able to
decipher the ladder.
Eric
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.

No Response to "Digest for sci.electronics.repair@googlegroups.com - 21 updates in 6 topics"

Post a Comment