Aren't gold plated connectors supposed to be inoxidable? - diyAudio
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Old 13th November 2003, 06:20 PM   #1
Bricolo is offline Bricolo  France
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Default Aren't gold plated connectors supposed to be inoxidable?

That's how my "High-End" (according to the local store) RCA connectors look like.
I manipulated them with my fingers, and didn't touch them for 2 weeks

Now I can see my fingerprints on them, looks like oxidation. And it don't get away with acetone or alchool

Could this be "false' gold??
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Old 13th November 2003, 06:33 PM   #2
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Default Re: Aren't gold plated connectors supposed to be inoxidable?

Quote:
Originally posted by Bricolo
That's how my "High-End" (according to the local store) RCA connectors look like.
I manipulated them with my fingers, and didn't touch them for 2 weeks

Now I can see my fingerprints on them, looks like oxidation. And it don't get away with acetone or alchool

Could this be "false' gold??
Could be. Real gold shouldn't do that. I suppose it's possible that there's no gold on it at all, just polished brass which looks strikingly similar to gold but when handled, can tarnish just as you show in the photograph.

Try dissolving a couple tablespoons of salt in about half a cup of vinegar and see if that removes the fingerprint.

se
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Old 13th November 2003, 06:36 PM   #3
SY is offline SY  United States
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It could also be that what you've got is very thin gold flashing, rather than a nice, hard electroplate.
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Old 13th November 2003, 06:37 PM   #4
Bricolo is offline Bricolo  France
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thanks for the tip

should I put the entire connector in this solution, or simply put a little of it on a coton?
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Old 13th November 2003, 06:57 PM   #5
lux0 is offline lux0  Canada
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It's probably a cadmium chromate dip....modern fools gold.
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Old 13th November 2003, 07:06 PM   #6
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Quote:
Originally posted by Bricolo
thanks for the tip

should I put the entire connector in this solution, or simply put a little of it on a coton?
Either way. Whichever one you do, just be sure to rinse it off well with some water afterward. Otherwise things will start turning green.

se
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Old 13th November 2003, 07:11 PM   #7
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Quote:
Originally posted by SY
It could also be that what you've got is very thin gold flashing, rather than a nice, hard electroplate.
Yeah, a gold flash directly on the brass with no nickel barrier plating could give similar results I suppose. If that's the case, they're beyond cheap as even the cheap gold flashed stuff typically has a nickel barrier plating. And the "direct" gold plated stuff usually uses a gold/cobalt "hard gold" alloy.

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Old 13th November 2003, 07:14 PM   #8
tool49 is offline tool49  Canada
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There is a commercial product named GoldShine that does miracle to these connectors. It is designed to clean fingerprints from rings and earrings.

On a side note, I often used a product called Silvario to thoroughly clean and add a thin coat of conductive silver to the connectors. The only problem with this product is that you need to reapply a coat every time you mess with the connection.

Both products should be available in your local jewelery store.

Hope this help.
Sébastien
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Old 15th November 2003, 08:52 AM   #9
Bricolo is offline Bricolo  France
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Thanks Steeve!

I tryed the vinegar+salt. It's better now.
The fingerprints aren't totally gone, but it's far better
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Old 15th November 2003, 04:36 PM   #10
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Quote:
Originally posted by Bricolo
Thanks Steeve!

I tryed the vinegar+salt. It's better now.
The fingerprints aren't totally gone, but it's far better
Great! It works well on copper too. I usually use it for cleaning the bottoms of my saucepans.

se
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