I may be wrong, but if this is in regards to the attenuator fingers, I think they're gold plated so no corrosion should be present and only cleaning with IPA is necessary/recommended.
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Barry - N4BUQ
----- Original Message -----
From: "Don A" <firstname.lastname@example.org>
Sent: Wednesday, March 6, 2019 9:34:10 AM
Subject: Re: [TekScopes] Help with 465 repair - no signal on 50mv/100mv/200mv ranges
If you need to clean switches I don't find Isopropyl Alcohol (IPA)does a
great job. I use the Deoxit products from CAIG. https://caig.com/
They have products for cleaning switches Deoxit D series and products for
cleaning potentiometers the Deoxit Fader series.
To me, the problem with IPA is that it is a solvent that cleans grease but
won't remove tarnish. Deoxit D series will. For very tarnished surfaces (say
tube sockets or connector pins) I use a product called Nevr Dull
http://www.nevrdull.com/ This a very fine polish that works great.
Yes, these product are expensive but the last a very long time for many