Simpsons arcade boot loop

yugffuts

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Hello,

I fired up my Simpsons arcade game today, and it turns on & shows eep rom test, then quickly shows passed (maybe 'completed') and then loops back to the eep rom test. I reseated the JAMMA connector and some Roms but no difference.

I can get into service mode, and it passes the rom test fine. Sample sounds, input test, etc seemed fine. but I can't get in game.

Any suggestions?
 
Sounds like the test button on the board itself is being pushed by something or is stuck on.
 
Sounds like the test button on the board itself is being pushed by something or is stuck on.

Interesting. I just fired it up in MAME, and it doesn't even load the screen I am seeing.

I suspected the voltage, but I didn't have my meter and I didn't see any voltage adjustment knobs on the power supply.

Sucks that it's not at my house. Any attempts to repair will have to wait until tomorrow.

Thanks.
 
Sounds like the test button on the board itself is being pushed by something or is stuck on.

Turns out that the previous owner's kid had played with some of the wiring, and changed the wiring on the test switch (inside the coin door) so it was always on. Once that was fixed, game worked fine.

Annoyed that it was something so simple/stupid, but glad that the game is working now. Just have to wire up some more controls to be 100%.

Thanks.
 
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