sci.electronics.repair@googlegroups.com

Today's topics:

* The nuts are becoming dominant - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/b6dfa94787754a55?hl=en
* WHO IS JESUS ????????? - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/9f51af72f44a3e39?hl=en
* Huge Radio Electronics Auction (Wall NJ, 07719) - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/855b2ae617260692?hl=en
* Yellow Glue strikes again - 2 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/9d8bded3db582b06?hl=en

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TOPIC: The nuts are becoming dominant
http://groups.google.com/group/sci.electronics.repair/t/b6dfa94787754a55?hl=en
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== 1 of 2 ==
Date: Wed, Sep 7 2011 3:57 pm
From: "Charles"

Poor signal to noise ratio, lately. Sad to see as this usenet group has
(had?) a lot to offer.

== 2 of 2 ==
Date: Wed, Sep 7 2011 7:16 pm
From: "Phil Allison"

"Charles"

> Poor signalto noise ratio, lately.

** You're an incorrigible fuckwit, Charles

Piss off.

... Phil

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TOPIC: WHO IS JESUS ?????????
http://groups.google.com/group/sci.electronics.repair/t/9f51af72f44a3e39?hl=en
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== 1 of 2 ==
Date: Wed, Sep 7 2011 5:15 pm
From: "Shaun"

"Charles" wrote in message news:j462mc$2f1$1@dont-email.me...

Absolutely nothing. And for those of us that may have missed the spam
the first time, you reposted the entire thing not once, but twice.

Exactly! A usenet license should be required (or perhaps an IQ
certificate).

If you want to be picky then go ahead, I'm sure to most people don't care
about things like that, but obviously you're an anal one.
IQ test huh, I probably make a lot more money and have a much more
responsible job than you do dipshit.

== 2 of 2 ==
Date: Wed, Sep 7 2011 5:47 pm
From: "Paul Hovnanian P.E."

bv wrote:

> WHO IS JESUS?

I am.

When I was young, my dad always used to call out to me: "Jesus Christ! What
are you doing now?!"

--
Paul Hovnanian mailto:Paul@Hovnanian.com
------------------------------------------------------------------
Programmers don't die, they just GOSUB without RETURN.

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TOPIC: Huge Radio Electronics Auction (Wall NJ, 07719)
http://groups.google.com/group/sci.electronics.repair/t/855b2ae617260692?hl=en
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== 1 of 1 ==
Date: Wed, Sep 7 2011 8:13 pm
From: Sal

Annual InfoAge Radio Electronics Auction
Saturday September 10th 2011
Huge Radio/Electronics Auction
conducted by The New Jersey Antique Radio Club
and The Radio Technology Museum
at the InfoAge Science History Learning Center and Museum
2201 Marconi Road, Wall, New Jersey 07719
All day sale of vintage radios, electronic test equipment, ham gear,audio
equipment, marine radios, military electronics and 1000's of vacuumtubes
along with related parts & documentation. Large variety of tubes in box
lots, groups or singles; many interesting types. Better tubes are
pre-tested.
Over 350 total lots, including many large box lots. Something here for
every radio/electronics collector. Stock up for the Kutztown Radio Meet.
Auction Begins at 10:00 AM on Saturday
Viewing is from 8:00 AM to 10:00 AM Day of Sale
Sale of artifacts and donations excess to the centers needs. Proceeds to
benefit InfoAge,
Radio Technology Museum and National Broadcasters Hall of Fame. Auction
is indoors with ample seating. Noted radio auctioneer Richard Estes is
wielding the auction gavel. Complete auction catalog available two weeks
prior to sale. Terms are cash or good check, sorry, we cannot take
credit cards. 5% buyers premium is charged.
http://www.infoage.org for directions

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TOPIC: Yellow Glue strikes again
http://groups.google.com/group/sci.electronics.repair/t/9d8bded3db582b06?hl=en
==============================================================================

== 1 of 2 ==
Date: Thurs, Sep 8 2011 12:55 am
From: "N_Cook"

dewar <whittington.chris@gmail.com> wrote in message
news:1aed88b7-5cca-4b7e-8eec-ddbd8b25c1b2@f41g2000yqh.googlegroups.com...
On Aug 30, 8:59 pm, "Phil Allison" <phi...@tpg.com.au> wrote:
> ** I had hoped that the dreaded Yellow Glue peril had gone away - but it
is
> still with us.
>
> Most of you will have seen it holding parts down to PCBs on Asian made
> equipment and many of those will have seen what happens if the parts
> involved get hot.
>
> The example on my bench is the SMPS from an Alesis powered monitor ( M1
> Active, Chinese made) ) which has blown up big time because of the damn
> Yellow Glue used to secure a ferrite toroidal coil. All the glue used had
> gone brown or back ( ie carbonised ) on this coil and arced across nearby
> tracks taking out the main switching MOSFET, its drive IC and associated
> transistors, high speed diodes and even the AC bridge rectifier diodes.
>
> The toroidal coil had to be un-wound, cleaned up and re-wound. The same
glue
> was attacking parts elsewhere on the board too ( it corrodes copper) and
had
> to be laboriously scraped off.
>
> Are the dickheads who squirt this horrible goop all over PCBs NEVER going
> to wake up ??
>
> ..... Phil

Sony had a problem with this glue on broadcast video recorders years
ago. Their tech bulletin blamed "CHLOROPRENE GLUE". One current mfr
data sheet shows a reduction in resistance from 10^13 to 10^8 after
500 hours at 100C. Unfortunately, the resistance just keeps dropping
after that.

+++++

Presumably equivalent degrading in something like 1000 hours at 80 degrees
or 2000 at 60 degrees etc
Would you have a URL for that , I can only find flattering product info out
there

== 2 of 2 ==
Date: Thurs, Sep 8 2011 1:33 am
From: "N_Cook"

probably
http://www.sonycid.jp/en/products/mc4/sc121.html

5-2.Stability of insulation resistance

Test Piece condition

* [Comb-shaped electrode JIS Z3197]
* [Conductor space 1.27mm]
* [Measured after charging with 500 V for 1 min]

Results
Initially 1.0 x 1013

1.0 x 1011 after 100°C 250 hrs
1.0 x 108 after 500 hrs

2.0 x 1012 after 40°C 90% 96 hrs
4.0 x 1011 after 250 hrs
3.0 x 1011 after 500 hrs

But nothing flagged-up about further degradation, a later page?

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