My Gorf came with an extra boardset. The ROM board resets itself every other second or so. I have reseated all the ROMs and RAM on the board to no avail. Has anyone else had this problem before?
Check the ROMs for corroded/bent pins... then check them in an EPROM programmer to see if the checksums match what's in MAME. Replace any that are bad.
Look at the sockets to see if they are corroded, have bent contacts, or are just crappy TI sockets like were used in Galaga. If so, replace them.