Berzerk 8 Beeps, then repeats

[KLOV]

This ZPU-1000 had very bad acid battery damage with no flashes. Entire right side of board south of the battery neaurlized, stripped and all new components installed. Now getting 3 beeps with no other boards connected. Yeah, I was pretty stoked about that!

I then hooked up to the rest of a complete known-good set - including the ribbon cables. Boots to 8 beeps/flashes then instantly starts the loop again. Once in a blue moon, it will freeze on the 8th beep with the LED remaining solid...

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Source: https://forums.arcade-museum.com/thread ... ts.532870/