Bought a lot off a guy and the Guantlet PCB is all blocky. I read somewhere around here (cant find the thread now) to remove the chips and reseat them. Did that. Worked then didnt. Any ideas?
go there scroll down to the game
and compare the diffrence betwene the one with mask roms or eproms usually its just changing the sl cl jumper settings and mabey moving a diode
once tghats done you can either change it to o ne from the same groupe (pcb type )or convert to a nes cart