Super Pac-Man always stuck in test mode

DreamTR

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Voltage reads 5.1 on original power board. This was looked at and was told nothing wrong with board on test bench. Connectors were cleaned a buch of times before. All dip switches are set to off. Has hi score kit from madrits installed. Said volume is loud on his test bench and works fine, but still stuck in test mode on my machine...what the heck else am I missing?
 
It's the mode before it adjust to test though. It says RAM OK, I/o OK, tells info about the game and stays there. I can't adjust anything at all, just one stationary screen with info
 
In test mode under MAME (I don't have this game), you can do a sound test with the joystick. Looks like that's all this test mode does, as far as interactivity. If yours won't do that, then it sounds like the CPU is crashed (which could have a number of causes).

If I understand what you said, it worked fully when someone else tested it outside the cabinet. So either the board/component was damaged/zapped (or socketed part came loose) when it was being handled, or the problem is in the cabinet (power supply, or wiring harness).

If there's a test mode button in the cabinet, check that it's not stuck or shorted in the wiring.

Does the wiring harness connect to the board through an "FCC filter" (aka RF filter) board? I've seen people mention those being problematic, it's just another possible failure point. You could try bypassing that.

BTW Hi DreamTR, thanks for sharing your NES stuff, years ago I've seen some of the fascinating carts you had loaned to kevtris.
 
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Disconnect the control panel and maybe wires to test switch(desloder) and see what happens.

I had a Jr pac pcb that was acting very weird. Z80 was partially dead. Swap that if you can.

Worse case, track down another pcb. I have a spare super pac pcb.
 
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