Moon Patrol Issues. Please help...

sbardelli

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Hey Klov community...

My Moon Patrol was acting up. So I sent the board off to be fixed. Dude said he fixed it. And it worked properly for a few hours before reverting back to the previous issues.

So what's it doing?

It usually boots fine. But when I start a game... the patrol car proceeds to scroll all the way to the right of the monitor and then loops back to the left of the screen. The sprites are all strange. Ships and holes appear at strange places. The scores are strange. Then everntually, the shole image just freezes.

I've got 5 volts at the power supply... but I don't know where to test voltage on the boards. Does anyone know where to test for voltages?

Thanks in advance.
 
When in doubt, just use pin 7 gnd and pin 14 vcc of any 14 pin ttl chip. Or pin 8 and 16.
 
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