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(Topic ID: 170674)

Stripping battery corrosion with a strong acid

By barakandl

7 years ago


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    Post #1 Cleaning procedure & results with acid compound on classic Bally MPU board Posted by barakandl (7 years ago)

    Post #7 Cleaning technique Posted by barakandl (7 years ago)

    Post #8 Cleaning results of the acid compound on WMS system 3-6 MPU board Posted by barakandl (7 years ago)

    Post #10 Results of applying the acid compound on WPC MPU boards Posted by johnwartjr (7 years ago)

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    #26 7 years ago
     
    ???

    Homepin

    Inactive member

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    13y 77,400 2,125 1

    Quoted from vid1900:

    Your acid/peroxide mix won't eat the copper protected by the green conformal coating, but any exposed copper will be completely removed in a few minutes (the warmer the temp, the faster the reaction).

    Yup - exactly what we use for etching printed circuit boards....

    1 month later
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    #36 7 years ago
     
    ???

    Homepin

    Inactive member

    Unknown

    13y 77,400 2,125 1

    The main thing that needs to be understood here is that battery corrosion on these boards is:

    ALKALINE !!!! not acid.

    You need to use the OPPOSITE of alkaline to neutralise it - that means you need to use an:

    ACID !!! to neutralise the battery corrosion.

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