Domino Man acting up - playing random sounds during attract

blkdog7

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Domino Man acting up - playing random sounds during attract

My Domino Man started acting up tonight. It's playing random sounds from the game and music plus a very staticy sound during attract.

I checked my power supply voltages and they seem to be all in check.

PCB issue? Wondering where I should be looking. Might pull out the board and reseat everything. Any other ideas?
 
heat?

Was the game on for a while? Also, is the backdoor on it? I've had the same issue with Willams games in the past.. I installed a few fans (intake and exhaust) and that did the trick.. Now i just keep the backdoor off all my games.. Good luck sir.
 
Was the game on for a while? Also, is the backdoor on it? I've had the same issue with Willams games in the past.. I installed a few fans (intake and exhaust) and that did the trick.. Now i just keep the backdoor off all my games.. Good luck sir.

Yeah, my games are always on for awhile. Not uncommon for them to be on 2-4 hours daily.
 
^ Yeah, it's supposed to mute the sound on MCR games during attract mode; so if the symptoms you're experiencing are only happening when the game is in attract, then the resistor at R135 on the SSIO board may be the culprit...
 
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^ Yeah, it's supposed to mute the sound on MCR games during attract mode; so if the symptoms you're experiencing are only happening when the game is in attract, then the resistor at R135 on the SSIO board may be the culprit...

It does also play random and wrong sounds during game play too. I just start noticing the symptoms when the game is sitting idle cause I am forced to shut it off cause the audio is flippin' out.

I wonder if it could be a bad Z80 on the sound board?
 
My Kickman has a loud hum in attract mode, and goes away when coined, I will have to check that. I had some random sound issues like the OP noted, reseated ships and it fixed it, I am going to install new ribbons tonight and check the r135...
 
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