Hi! & sick dragon advice
Posted: Wed May 08, 2013 2:16 pm
Hello all
Im a retrogamer and have accumulated a few systems over the years. I've got a couple of dragons and have recently dusted them off, built a video cable and joystick, and got some software running on one of them.
One's poorly (I suspect a RAM chip) anyone know if theres any diagnostic programs out there? it will boot up and load programs but attempting to run one results in a screen of garbage. Ruled out the software and psu by testing on the working dragon. Voltage supply from the power board to mainboard is spot on.
I know 4116 RAMS are prone to fail from working on williams arcade PCBs (joust & defender are two i own) i have spare rams but theres nothing to indicate the fault - if it is indeed ram.
cheers, hope to be able to contribute to the forums - i may get the probe and scope out and see where that gets me.
Im a retrogamer and have accumulated a few systems over the years. I've got a couple of dragons and have recently dusted them off, built a video cable and joystick, and got some software running on one of them.
One's poorly (I suspect a RAM chip) anyone know if theres any diagnostic programs out there? it will boot up and load programs but attempting to run one results in a screen of garbage. Ruled out the software and psu by testing on the working dragon. Voltage supply from the power board to mainboard is spot on.
I know 4116 RAMS are prone to fail from working on williams arcade PCBs (joust & defender are two i own) i have spare rams but theres nothing to indicate the fault - if it is indeed ram.
cheers, hope to be able to contribute to the forums - i may get the probe and scope out and see where that gets me.