Hello all. I picked up a Pin*Bot today at an auction, and there is a small amount of corrosion on the board, presumably from the batteries. Now, I can't see any discolored traces, but the there are a few pins on U42 and the resistor next to it that are corroded.

What's my next move? Would there be any problems with removing/flushing the board, or do I have to take drastic measures? The machine boots and seems to work well (except for a dead display), so is drastic action even necessary?

Thanks for all the help, I am a bit in the dark here as this is the first machine I have bought personally.

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Here’s a photo with the battery holder removed, as far as I can tell there’s only acid damage on the terminals.

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What acid would I use to neutralize it? And is there any type of cloth you would recommend? I thought I had to desolder the ICs since some of the acid could get underneath and cause further issues. I do agree with you though, I’d rather not have to solder if possible.

Thanks for all the responses everyone.

So I made one pass with vinegar/water/isopropyl alcohol, and here are my results. Is this properly neutralized, or do I have to see metal shine to signify that the battery acid is gone?

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Update: I put in a remote battery holder and put the board back into the machine. The machine still boots, and is successfully saving settings with the new batteries.

Thanks for all the help everyone.