I've been using deoxit D5 from Caig in CA for enlosed contacts such as
pots, etc.... Not sure of long term results yet.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bob Landman
Sent: Monday, February 08, 2010 11:49 AM
To: [log in to unmask]
Subject: Re: [TN] contact cleaner- recommendation
I gave up on connector cleaners (have not tried the deoxit products or
MG Chemicals) as the problem they supposedly solved returned.
We had an oxidation (intermittant connection) problem on Molex power
connectors (which are tin plated). I called Molex. They recommended a
product called Nyogel 760G lubricant. http://www.nyelubricants.com/
The auto and golf cart industry uses it and so does the military.
We got a 2 oz tube (it's not cheap but it lasts a long time as you don't
need much of it). We tried it on many different connectors, my HP
calculator (the gold connections to the battery had turned green) and a
flashlight that was intermittant. All were fixed within seconds. The
wiping action of mating the connectors did the cleaning but when it
didn't (as was the case with the flashlight and my HP calculator,
dabbing some on a Q-tip then using the tip to scrub the connector did
the trick.
I had some reservations about greasing connectors (dust accumulation)
but when I read an article on using it on Navy aircraft, I was convinced
it was worth trying in the field. So I sent a 2 oz tube to my customer;
the problem disappeared. What we thought was an electronics problem in
the power supply (or external applied 12Vdc power) was simply oxidation
or airborne corrosion (the application was at an airport).
Check out the Aviation/Aerospace Industry articles
http://www.nyelubricants.com/techarticles.htm
I have recommended it to others and the results are the same. This
stuff is incredible.
Price varies a lot - use Google to find the lowest cost distributor.
Bob Landman
H&L Instruments, LLC
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Croslin, Robert
Sent: Monday, February 08, 2010 10:25 AM
To: [log in to unmask]
Subject: Re: [TN] contact cleaner- recommendation
Never really knew. We developed the chemical cleaning into a process
after out 6 Sigma black belt "guru" validated it for production and
refurbishment use. Fortunately, the VP of Engineering reviewed it and
went along with my and my Quality guy's objections that the test
criteria were way too subjective and it wasn't sufficiently proven.
Amazingly, the problem then seemed to go away. A few months later, our
repair/refurb supervisor disclosed he'd begun using the eraser to clean
the edge connectors of the tuner cards and simply not tell anyone. Even
the extensive FA we had done be a very reputable lab, never really
defined the problem.
We still have units reach our field reps that tested fine before
shipping, but don't boot up. They remove the cover and reseat the tuner
card and memory sticks on the mother board and everything works
perfectly for the two to five years the meter is in a home. Go figure.
Bob
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Monday, February 08, 2010 9:32 AM
To: [log in to unmask]
Subject: Re: [TN] contact cleaner- recommendation
How much gold was removed after each cleaning with the 'ol pencil
eraser?
How was the residue remove from the card/board?
Did it cure the issue?
Victor,
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Croslin, Robert
Sent: Monday, February 08, 2010 7:57 AM
To: [log in to unmask]
Subject: Re: [TN] contact cleaner- recommendation
About three years back, we went through an extensive testing process of
all the commercial cleaners out there, including having FA performed on
samples due to what appeared to be connector fretting on our meters.
None worked easily and even the best required extensive scrubbing and
cleaning. We finally settled on Chester's solution, the good 'ol pencil
eraser in stick form, and the problem was solved.
Bob Croslin
The Nielsen Company
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Harner, Chester
Sent: Friday, February 05, 2010 6:11 PM
To: [log in to unmask]
Subject: Re: [TN] contact cleaner- recommendation
#2 Eberhard Pencil (NASA)
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang
Sent: Friday, February 05, 2010 2:29 PM
To: [log in to unmask]
Subject: [TN] contact cleaner- recommendation
Hi All,
In market what is the most common and good contact cleaner
used? To ensure better, reliable and long term contact. Thanks.
Regards
GA Tan
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