(Topic ID: 192698)

System 3 replacement boards


By bronco-jon

2 years ago



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  • 12 posts
  • 4 Pinsiders participating
  • Latest reply 2 years ago by ForceFlow
  • Topic is favorited by 2 Pinsiders

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    #1 2 years ago

    What is everyone using when your system 3 board(s) has seen it's better days?
    I just picked up a Williams SS Hot Tip that has been sitting for many years with the batteries left on the board.....yes, they leaked and made a mess on the board. The machine is in too good of shape not to fix.

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    #5 2 years ago
    Quoted from zacaj:

    Just fixed a Hot Tip with almost the exact same problem. Because of the location of the batteries it wasn't actually that bad to fix. That left chip and the two roms can be replaced with a single combo rom in the far-right rom socket (not populated on your board). Replace the interconnect and ROM+CMOS ram socket for good measure and I bet it'll boot right up. There aren't many good replacement boards for early williams...

    After cleaning it up some with just water and a small brissel brush (I need to go buy some vinegar) it actually doesn't look too bad. I cut what was left of the battery holder off and just left the prongs. I don't see any broken or corroded through tracers.
    do you think there is a chance of it being ok? I pulled the first three chips out and cleaned the sockets up best I could with what I have. is there anything else that works good on cleaning up the board? and do you know of a link you can send me that covers this repair you are talking about? thanks

    #7 2 years ago

    Thank you very much. the only problem is I don't see a IC14 on my board or on the schematic.

    #9 2 years ago

    Thanks, great thread! If I'm lucky I won't have to sent it off to get fixed. I don't have enough experience to do it myself.
    ...looks like those chips will clean up ok. do you think they will be alright? if not, where can I get some?

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