[Repeater-Builder] Re: Micor Pin Gunk
If you are using Isopropyl alcohol as a 'thinner', be careful where you use it. We had significant problems with softening of the capstan drive pinch wheels in a well known make of broadcast video recorders when they had been accidentally splashed with Iso'. Gordon ZL1KL
Re: [Repeater-Builder] Re: Micor Pin "Gunk"
FYI; Many years ago when I worked for Hewlett Packard in their Test Equipment division, we used to use a UK contact cleaner called Eletrolube, it was sold by Radiospares in UK. It was the only spray or drip contact cleaner we could use on the HP DC Standard as others would cause micro volt calibration errors due to minute leakages. In its day it was the Rolls Royce of contact cleaners. Don't know if its still available. I think they even had a paste for heavy duty switch contacts. Peter On Sun, Sep 5, 2010 at 11:12 AM, Eric Lemmon wrote: > > > Tom, > > Any statements made on the Caig website regarding a "comparison" of DeOxit > and Stabilant, could hardly be judged as unbiased. Legitimate, real-world > comparisons of contact enhancement compounds have already been made, many > times, by Motorola, IBM, Bendix-King, Hewlett-Packard, Tektronix, and other > major manufacturers. I remember an article in Radio-Electronics Magazine, > some 30 years ago, where the excellent performance of Stabilant was > documented. Many moons ago, I cured a problem with my Apple II+ using > Stabilant 22- the plug-in expansion and memory cards had a tendency to > "walk" out of their motherboard sockets and cause intermittent contact. A > thorough cleaning with an alcohol-soaked Q-Tip, followed by an application > of Stabilant 22A, completely cured the intermittent contact. > > Don't be concerned about Stabilant 22 becoming hard; it dries into a waxy > film that remains pliable for years. > > > 73, Eric Lemmon WB6FLY > > > -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:Repeater-Builder@yahoogroups.com] > On Behalf Of TGundo 2003 > Sent: Saturday, September 04, 2010 9:27 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Re: Micor Pin "Gunk" > > Thanks Lou, Bob, Eric, John and the rest! > > I have a bunch of techs around here that all swear by Deox-it as long as > its > used sparangily, and Caig seems to hit all concern points in their website > vs.22. > > Has anyone had any specific issues directly related to using Deox-it? I > want > to do the right thing and will order the 22 if necessary, but not only > because it is what Circle M recommends...maybe Deox-it was not around when > they made the recommendation? From reading the Caig website I think it may > be a better choiceI worry a little about the 22 drying into a rigid > form. What happens over time as the pins heat up and expand/contract, > especially in a non-climate controlled environment? > > Tom > W9SRV > > --- On Sat, 9/4/10, wa6epd > wrote: > > From: wa6epd > > Subject: [Repeater-Builder] Re: Micor Pin "Gunk" > To: Repeater-Builder@yahoogroups.com > Date: Saturday, September 4, 2010, 10:57 PM > > > Bob, NO6B, wrote:- > > > > < > http://www.micro-tools.com/store/P-22/Stabilant-22-5ml-Kit-Makes-30ml-Of-22 > a.aspx> > > > > > Take a look at:- > > <http://store.caig.com/s.nl/ctype.KB/it.I/id.1977/KB.215/.f> > > The do the comparison. > > -Lou- WA6EPD > > > > > > > > > > Yahoo! Groups Links > > > > > > >
[Repeater-Builder] Re: Micor Pin "Gunk" b
Hi Group, Before I retired, the two-way shop I worked for would get Stabilant 22 from our local NAPA store. It came in a kit (cardboard tube) with a bottle of Stabilant 22 and swabs. I'm not sure if it was diluted or not. The price 10 years ago was about $38. We used it on full duplex 800 MHz Johnson radios on the synthesizer shield cover to stop the desense. Worth every penny, and it cure an ongoing problem with the Johnsons before we read an article in MRT magazine. Cheers, Ed Re: Micor Pin "Gunk" Posted by: "Eric Lemmon" wb6...@verizon.net wb6fly Sat Sep 4, 2010 11:13 am (PDT) Tom, Motorola does not now, and never has, recommended DeOxit or any other contact enhancer "gunk" besides Stabilant 22. Up until just a few years ago, Motorola specified Stabilant 22A, under part number 1180369E78, which is a mixture of pure Stabilant 22 and isopropyl alcohol. Today, Motorola sells a kit under part number 1180384V93 which comprises a 5 ml bottle of pure Stabilant 22, an empty 15 ml bottle, and some tiny swabs. The user then puts 2.5 ml of the Stabilant 22 into the 15 ml bottle and adds 10 ml of 99% isopropanol to make a working solution of Stabilant 22A, or adds 10 ml of pure ethanol to make a working solution of Stabilant 22E. Either solution is extremely effective if applied wet to clean connectors immediately before mating. It is also effective in curing intermittent contacts in card-edge connectors in PCs and electronic instruments. The alcohol solvent is essential for the product to work; undiluted Stabilant 22 is ineffective. Drug-store isopropyl alcohol, aka rubbing alcohol, should not be used since it is diluted with water and will interfere with Stabilant's action. The 1180384V93 kit is sold by Motorola Parts for about $47, but is sufficient to last for years. 73, Eric Lemmon WB6FLY
[Repeater-Builder] Re: Micor Pin "Gunk"
I haven't used Stabilant 22 so cannot speak to it's use, but have been using Deoxit for several years. It has been almost miraculous on many different items including Micor pins, squelch/ volume controls, and other items that had been contact cleaned many times with little effect. I am very pleased with it. Jon WA6KLB --- In Repeater-Builder@yahoogroups.com, "w9srv" wrote: > > Hi Guys! > > I am in the middle of rebuilding a receive site for one of the area repeaters > and have come across some interesting "Pin Gunk". I've been told that > Motorola techs years ago used to apply some kind of "goo" to help with the > connection on all the backplane pins, etc, but I don't know if this is what > that is. This receive site has been developing some intermittant issues on > several fronts, and maybe this explains them. > > The problem with this gunk is that is is non-conductive and a real bugger to > clean off. DeOxit seems to work the best. I made this quick video last night > showing this on the pins of the power control board. Here is the link to the > video: > > http://www.youtube.com/watch?v=tmWumkQetdY > > Has anyone else ever come across this? Are there any other steps other than > cleaning it off to ensure it will not be another problem in the future? > > Thanks! > > Tom > W9SRV >
RE: [Repeater-Builder] Re: Micor Pin "Gunk"
Tom,
Any statements made on the Caig website regarding a "comparison" of DeOxit
and Stabilant, could hardly be judged as unbiased. Legitimate, real-world
comparisons of contact enhancement compounds have already been made, many
times, by Motorola, IBM, Bendix-King, Hewlett-Packard, Tektronix, and other
major manufacturers. I remember an article in Radio-Electronics Magazine,
some 30 years ago, where the excellent performance of Stabilant was
documented. Many moons ago, I cured a problem with my Apple II+ using
Stabilant 22- the plug-in expansion and memory cards had a tendency to
"walk" out of their motherboard sockets and cause intermittent contact. A
thorough cleaning with an alcohol-soaked Q-Tip, followed by an application
of Stabilant 22A, completely cured the intermittent contact.
Don't be concerned about Stabilant 22 becoming hard; it dries into a waxy
film that remains pliable for years.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of TGundo 2003
Sent: Saturday, September 04, 2010 9:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Micor Pin "Gunk"
Thanks Lou, Bob, Eric, John and the rest!
I have a bunch of techs around here that all swear by Deox-it as long as its
used sparangily, and Caig seems to hit all concern points in their website
vs.22.
Has anyone had any specific issues directly related to using Deox-it? I want
to do the right thing and will order the 22 if necessary, but not only
because it is what Circle M recommends...maybe Deox-it was not around when
they made the recommendation? From reading the Caig website I think it may
be a better choiceI worry a little about the 22 drying into a rigid
form. What happens over time as the pins heat up and expand/contract,
especially in a non-climate controlled environment?
Tom
W9SRV
--- On Sat, 9/4/10, wa6epd wrote:
From: wa6epd
Subject: [Repeater-Builder] Re: Micor Pin "Gunk"
To: Repeater-Builder@yahoogroups.com
Date: Saturday, September 4, 2010, 10:57 PM
Bob, NO6B, wrote:-
http://www.micro-tools.com/store/P-22/Stabilant-22-5ml-Kit-Makes-30ml-Of-22
a.aspx>
http://store.caig.com/s.nl/ctype.KB/it.I/id.1977/KB.215/.f>
The do the comparison.
-Lou- WA6EPD
Yahoo! Groups Links
Re: [Repeater-Builder] Re: Micor Pin "Gunk"
Thanks Lou, Bob, Eric, John and the rest! I have a bunch of techs around here that all swear by Deox-it as long as its used sparangily, and Caig seems to hit all concern points in their website vs.22. Has anyone had any specific issues directly related to using Deox-it? I want to do the right thing and will order the 22 if necessary, but not only because it is what Circle M recommends...maybe Deox-it was not around when they made the recommendation? From reading the Caig website I think it may be a better choiceI worry a little about the 22 drying into a rigid form. What happens over time as the pins heat up and expand/contract, especially in a non-climate controlled environment? Tom W9SRV --- On Sat, 9/4/10, wa6epd wrote: From: wa6epd Subject: [Repeater-Builder] Re: Micor Pin "Gunk" To: Repeater-Builder@yahoogroups.com Date: Saturday, September 4, 2010, 10:57 PM Bob, NO6B, wrote:- http://www.micro-tools.com/store/P-22/Stabilant-22-5ml-Kit-Makes-30ml-Of-22a.aspx> http://store.caig.com/s.nl/ctype.KB/it.I/id.1977/KB.215/.f> The do the comparison. -Lou- WA6EPD Yahoo! Groups Links
[Repeater-Builder] Re: Micor Pin "Gunk"
Bob, NO6B, wrote:- http://www.micro-tools.com/store/P-22/Stabilant-22-5ml-Kit-Makes-30ml-Of-22a.aspx> http://store.caig.com/s.nl/ctype.KB/it.I/id.1977/KB.215/.f> The do the comparison. -Lou- WA6EPD
