Gorf Boardset Woes

bstnguy

Well-known member
Joined
Jan 30, 2008
Messages
1,812
Reaction score
36
Location
Boston, Massachusetts
Got a Gorf boardset that boots and goes into attract mode on the bench.

Put it in a cabaret cabinet, get the Ram Error yellow jailbars.

What I've done so far:

Verified getting good -5VDC in the cabinet and other voltages (running switcher adapter)
Replaced RAM/ROM RAMs (couple were bad)
Fixed a bad video RGB board (Was dragging down the 5VDC and causing reset)
Replaced a 74LS245 on the Microprocessor board

Other odd thing it does is it won't run the RAM Test EPROM on the bench (either Marks or the other one) but I can force it to run correctly using a Fluke 9010a.

Suggestions?
 
Back
Top Bottom