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Thread: Newbie - Just acquired a CBM 3032

  1. #11
    Join Date
    Feb 2015
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    Cleveland, OH, USA
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    507

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    Quote Originally Posted by MikeS View Post

    If they're at all greasy I spray boards with Fantastik/Formula 409, brush with an old toothbrush, rinse well with water (optional: distilled, followed with Isopropyl) and dry with a fan; never a problem.
    Some people put 'em in the dishwasher and dry them out in the oven. Apparently they live near computer recyclers.

    -CH-

  2. #12
    Join Date
    Dec 2005
    Location
    Toronto ON Canada
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    6,807

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    Quote Originally Posted by clh333 View Post
    Some people put 'em in the dishwasher and dry them out in the oven. Apparently they live near computer recyclers.

    -CH-
    That's mostly keyboards, but I wouldn't recommend it for a PET keyboard.

    @OP: just curious: what are the numbers on the 'E' ROM IC at UD7 ?

    m

  3. #13
    Join Date
    Feb 2009
    Location
    Southern California, USA
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    2,343

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    Quote Originally Posted by clh333 View Post
    Some people put 'em in the dishwasher and dry them out in the oven.
    I know Commodore PET main boards are not considered 'High Reliability" electronics, but in the aerospace industry, if a board had been cleaned using a water process, it must go through a 24 hour dry-out in a Thermo-Vac Station under high temperature and high vacuum to outgas all the introduced water vapor and contaminates. Otherwise its long term reliability would be very compromised.

  4. #14

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    Leave it alone, give it a soak test. If there are no problems at all after a few hours, spray using compressed air can (when switched off and unplugged) and leave it.

    I would not wash it, take chips out or anything at all as it would disrupt anything.

    *Speaking from years of experience on handling and restoring vintage electronics.*

    Paul

    P.S. Here's the old technie rule, "if it works don't touch it!"

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