Recently, I've got a MVS 1FZ board as a gift. The board boots up with only garbage on screen, but no watchdog kicking in, no click, just a static image of pixel soup. The clock on the 68k is there, clean 5 Volts around the board and no previous repair attempts visible. I've checked for broken traces, but the board is in overall good shape, no battery leakage either.
There is however, little to no activity on the address and data lines, the reset line on the 68k is low and so is the halt line.
Where do I go frome here? I've already swapped out the SP1 rom and checked continuity on the address and data bus, seems to be all there.
There is however, little to no activity on the address and data lines, the reset line on the 68k is low and so is the halt line.
Where do I go frome here? I've already swapped out the SP1 rom and checked continuity on the address and data bus, seems to be all there.