I was looking at the wrong part of the schematic. C5 may have a clock that sounds strange on the logic probe as that one is 3Khz. C4 should have clock on 11,12,13,14
I was able to get it to boot up by replacing F7, the daughter board needs work to get the game to fully run. I’ll returning the board set so he can continue with the rest of the diagnosis. Daughter board needs some love to make it boot and run reliably.
Not much of a repair but I had an extra Centipede board for about a year on a shelf that I bought not working. Finally decided to take a look at it. It was missing one ROM, both objects ROM's, high score chip, a capacitor, a resistor, and the red LED power light. I replaced all missing...