(Topic ID: 153565)

TerryB's Guide to Repairing Battery Damage


By terryb

3 years ago



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  • 102 posts
  • 27 Pinsiders participating
  • Latest reply 2 years ago by terryb
  • Topic is favorited by 60 Pinsiders

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    There are 102 posts in this topic. You are on page 3 of 3.
    #101 3 years ago

    On to the next Cratex test case...

    A WPC-89 CPU with medium alkaline damage.

    The board took probably 3 hours from start to finish.

    I calculate supplies on the repair at ~$15 including parts.

    No damaged traces thankfully, so no jumpering required. That can often add significant time to a repair, and makes it unappealing. Also, it hadn't been previously reworked - these fine traces likely won't withstand multiple repairs.

    I used Cratex's 'ultra fine' bullet on this. I think it was #14. Might have been #15 - they are similar.

    Cost on these is about a buck, but you have to buy 100 of them to get that price. Ran at the #3 speed setting on my Dremel - will try to find out what RPM that is. Used about 1/2 to 2/3rds of the bullet.

    After the traces were cleaned up, I did a light coating with MG Chemicals 419C. Stuffed the board, soldered the parts in, cleaned flux, tested, and sealed again after complete with a slightly heavier coat.

    I think the Cratex will work very nicely on these.

    Probably will 'batch' the next job, have resistors and such on order from jameco as I ran out of 1.2k ohm 1/4 watt resistors and had to use 1/2 watt on this board. I think if I do multiples, I could cut 1/2 to 1 hour per board from the job.

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    1 week later
    #102 2 years ago

    I finally got the article posted at the following link. My apologies again for taking so long to get this done.

    https://pinside.com/pinball/forum/topic/terrybs-guide-to-repairing-alkaline-battery-damage

    John, I used two of your photos as we discussed. Feel free to add your other photos and experience with the Cratex bullets (it would be nice if it's all in one place).

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