Before you give up and replace it, you might try one of those liquid tarnish removers. The one I have is called "Tarn-X", but it is decades old so I don't know if they are still in business.
Basically, you dip the part in the solution for a moment and then rinse it off THOROUGHLY. The label says it contains "acidified thiourea, detergent, and corrosion inhibitors." Probably not the kind of stuff you want on electronic parts! However, I have used it on ancient DIPs that had silver plated leads, so oxidized as to be unsolderable. The magic liquid cleaned them instantly, and I never had any later problems with the circuit.
Best regards,
Bob Masta DAQARTA v4.51 Data AcQuisition And Real-Time Analysis
formatting link
Scope, Spectrum, Spectrogram, Sound Level Meter FREE Signal Generator Science with your sound card!
Yes, so noted. I happen to like Baskin and (N) Robbins (BNC) butter pecan ice cream. I think my brain got rewired recently on the matter. :-) However, I thought BNC stood for British Naval Connector.
--
W. eWatson
(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15\' 7" N, 121° 2\' 32" W, 2700 feet
Web Page:
We once had a connector vendor guy visit; I asked him if BMC stood for anything, and he just said, "BayoNet Connector".
When I was in the USAF, they issued a "contact burnisher" with several blades, one of which was round, and could poke into the contact of a female BNC.
Duodecobenzinesulfonicacid. Used to make Melamine and some water based foam when reacted with urea. The Chinese have loads of the stuff. They use it in their kids formula as a stretcher along with ethylene glycol as a sweetener. Diluted 100:1 with water it will clean corrosion off most metals. Also used as a major ingredient in car wash soap as an aluminum brightener. Stinky stuff. Been there done that in my prior work life. If ingested over a period of time it will kill you slowly. Kills Cats faster.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.