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VA, USA
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Posted: 8/4/2024 12:57:24 PM EDT
I have a yee olde peq2a and it either gave up the ghost altogether or the contacts need cleaning. The battery tubes look like there may have been a leak once upon a time but it was working for a while.
What is a good way to clean the contacts without messing something up? I’ve never done it in other electronics or anything. |
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Posted: 8/4/2024 1:11:40 PM EDT
[#1]
Try a pencil eraser for light corrosion.
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ND, USA
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Posted: 8/4/2024 1:14:35 PM EDT
[#2]
Remove cables from terminals, wash battery top, terminals and cable ends with water and baking soda. Use a wire brush to scrub the terminals and cable ends. When clean, coat terminals and cable ends with a heavy grease and re-connect cables.
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Posted: 8/4/2024 3:16:09 PM EDT
[#3]
I know zero about the item you have but if it is sealed up where the batterries are placed vinegar is a great neutralser of deposits left by batterries.
In my case it is usually used with corrosion from alkaline batterries. Wash with water afterwards. |
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Posted: 8/4/2024 10:32:24 PM EDT
[#4]
I've used a q-tip dipped in lemon juice successfully before on battery contacts corroded by a leaky alkaline battery.
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Posted: 8/5/2024 7:29:40 AM EDT
[#5]
I second the Baking Soda/Water mixture. People that work with acid, always keep Baking Soda handy.
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CT, USA
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Posted: 8/13/2024 8:36:09 PM EDT
[#6]
https://a.co/d/bpjTGj3
Corrosion gone works very well. Removes corrosion wherever you apply it. Link above is for it at Amazon. If not “Corrosion Gone” is the name. I have used it on severely corroded contact with success. And in battery corroded flashlight tubes. |
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VA, USA
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Posted: 9/23/2024 1:57:23 PM EDT
[#7]
Well finally got around to it, I tried a wire brush, pencil eraser, and baking soda. Still not working.
Any ideas on how to trouble shoot to see if it is the connectors or if this antique just gave up the ghost? |
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AZ, USA
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Posted: 9/23/2024 5:05:23 PM EDT
[#8]
Quote HistoryOriginally Posted By hodgescl: Well finally got around to it, I tried a wire brush, pencil eraser, and baking soda. Still not working. Any ideas on how to trouble shoot to see if it is the connectors or if this antique just gave up the ghost? If the corrosion was real bad it's possible it may have migrated into the wire and/or pc board. Taking it apart and checking the resistance of the B+ and negative would be where I'd start. |
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VA, USA
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Posted: 9/23/2024 7:57:15 PM EDT
[#9]
Quote HistoryOriginally Posted By MunnyShot: If the corrosion was real bad it's possible it may have migrated into the wire and/or pc board. Taking it apart and checking the resistance of the B+ and negative would be where I'd start. Quote HistoryOriginally Posted By MunnyShot: Originally Posted By hodgescl: Well finally got around to it, I tried a wire brush, pencil eraser, and baking soda. Still not working. Any ideas on how to trouble shoot to see if it is the connectors or if this antique just gave up the ghost? If the corrosion was real bad it's possible it may have migrated into the wire and/or pc board. Taking it apart and checking the resistance of the B+ and negative would be where I'd start. Not sure means but I’ll look it up and give it a shot. Or sell it to a cloner. |
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IA, USA
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Posted: 9/23/2024 9:38:53 PM EDT
[#10]
Quote HistoryOriginally Posted By SSeric02: Try a pencil eraser for light corrosion. Came in to mention this. |
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AUS
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Posted: 9/23/2024 11:05:13 PM EDT
[#11]
Aside from removing the corrodant, corrosion can't be removed, because by definition, it's already gone. problem is that some corroded materials aren't very conductive (eg, Rust vs Steel ).
You can get a fiberglass pencil for removing light corrosion. They work really well, and are light on the abrasive to avoid removing electroplating where possible, but since corroded materials and rust are usually lighter, these are a suitable alternative, and cope well with shaped surfaces. eg:  As was noted, corrosive liquids escape a tightly sealed battery. They travel up the battery contacts pretty effectively too. |
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