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  • Tech: Gottlieb System 80B sound board.

    From [email protected]@21:1/5 to All on Tue Dec 6 08:01:45 2022
    I have been working on these for years, trying to figure out what kills the background music. As it stands G5 7408 IC is the bad boy more times than not. I hope this helps. George Riley

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  • From John Robertson@21:1/5 to [email protected] on Tue Dec 6 10:04:46 2022
    On 2022/12/06 8:01 a.m., [email protected] wrote:
    I have been working on these for years, trying to figure out what kills the background music. As it stands G5 7408 IC is the bad boy more times than not. I hope this helps. George Riley

    My experience too.

    Gottlieb didn't protect the chip inputs, so I suspect they die because
    someone plugged or unplugged a board with the power on...

    John :-#)#
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