Pacman - Dead controls, no audio, reset on coin up.

AAirhart

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Pacman - Dead controls, no audio, reset on coin up.

I've been going through my pile and finally Frankenstein'd a pac board together enough to boot and go through attract mode...but I have a few outstanding issues.

1. No audio, no hum at the speaker, just a pop on boot. Sound pot seems ok.

2. Start button is dead.. Can't confirm other controls.

3. Pcb resets on coin up, usually after the second coin.

Ideas?
 
If you're testing it in a cabinet, recheck your 4 fuses. A board will sometimes boot even with one of those fuses blown, but is limping along so even a coin switch closing will make it reset. Have you done the 'check the power on the diodes' thing on the board yet? That way you'll know if you're getting the right power all the way through onto the pcb, all the connectors are always suspect.
 
Update, found a short at the coin door. All issues resolved....except 1. Still no sound. The speaker works, but i get no sound at all. Ideas?
 
Update, found a short at the coin door. All issues resolved....except 1. Still no sound. The speaker works, but i get no sound at all. Ideas?

Sound amp, power to it, cap right at the input to it, amp itself is bad. I would count on a bad amp with a short. If you test the amp by rubbing finger on the pins, you should hear static. If not the amp is not working for some reason.
 
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