Posted couple pics of this nightmare. Anybody fixed this sucker before?
http://forums.arcade-museum.com/album.php?u=56461
Thanks
http://forums.arcade-museum.com/album.php?u=56461
Thanks
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Believe me I did volt adj on the +5 from 4.7 through 5.3 - no change. +12 was right on and tracked tightly as did the -5vdc. Every test passed, new HDD x 2 both spares did fine. I'm starting to think board set also. Anyone have a schematic of this duo board. Its post video ram since all tests pass.
check voltages to the gameboard, but that screams boardset issue to me unfortunately.
Do you see any corrosion anywhere?
There's a schematic on the main site of this board, in the manuals section.
I saw an operators manual not a schematic. Is it under another board?
I second bad ram. Id do a quick test of the HDD, and verify code on all eeproms first off to rule it out, then check the ram chips.check voltages to the gameboard, but that screams boardset issue to me unfortunately. ID do a self test to see if you have some bad ram or something...