#46
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Just a question.....
Is there any reason you can't use a baking soda powder and water mixture to remove battery acid? I've done it hundreds of times to car / motorcycle batteries and connection cables. |
#47
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Dunno about cleaning circuit boards, but as for removing crud from car batteries.....not only will baking soda work, it'll also neutralize the battery if you allow any of it to get inside....so be careful!
Believe it or plotz, but warm water or even Windex do a great job of cleaning batteries....mebbe the vinegar or ammonia in some Windex-like products is the culprit in this case. Anthony |
#48
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I think the vinegar method is useful where alkaline batteries have leaked inside a device...the electrolyte is a base rather than an actual acid as in a car battery.
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#49
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batteries
Car/boat batteries are lead/acid technology; the electrolyte is sulfuric acid.
Alkaline cells used to used a potassium hydroxide solution (I think) as an electrolyte (basic). A battery for an old radio is more likely carbon-zinc, which used ammonium chloride or zinc chloride solution as the electrolyte (weakly acidic). The thing you're trying to get off, though, is probably not just dried electrolyte, though (especially not with a car/boat battery), but the reaction products of the electrolyte + whatever it spilled/leaked on, e.g. copper or brass contacts, wire, etc. |
#50
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i bet the thompson club will be at indy this year.
if you know which values you need i can send some your way. and to clean up the board use a desoldering station or a solder sucker and clean off the solder.wire brush scrape or sand the traces/leads and resolder. gotta clean off the battery juice to stop the corrosion though.
__________________
i collect and restore vintage radio's,tv's,and ham gear. email for more info |
Audiokarma |
#51
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Quote:
Paula Last edited by Charlie; 03-26-2006 at 03:04 PM. |
#52
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Last edited by andy; 12-07-2021 at 04:17 PM. |
#53
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the ones i have and used are a near perfect replacement other than all being radial.
when i get done with hamvention i will try to get some dug out. that 4.7@35 you have in the pic is a beercan compared to the ones i used.
__________________
i collect and restore vintage radio's,tv's,and ham gear. email for more info |
#54
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Quote:
Last edited by Paula; 10-28-2004 at 09:45 AM. |
#55
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Quote:
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Audiokarma |
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