xodaraP
Legendary
Hi guys,
I have a Mortal Kombat here that is in watchdog and has no video output. The board itself looks clean, I've verfied all the ROMs are good and can't find any broken traces. The video sync and vblank is generated by the CPU on these (a TMS34010) and I've noticed that the HSYNC and VSYNC are the only 2 pins on the CPU that are floating (not high or low)
I'm trying to work out if the CPU has failed or if the video output is disabled in the event the board is in a watchdog state, has anyone come across a similar issue who might be able to help?
I have a Mortal Kombat here that is in watchdog and has no video output. The board itself looks clean, I've verfied all the ROMs are good and can't find any broken traces. The video sync and vblank is generated by the CPU on these (a TMS34010) and I've noticed that the HSYNC and VSYNC are the only 2 pins on the CPU that are floating (not high or low)
I'm trying to work out if the CPU has failed or if the video output is disabled in the event the board is in a watchdog state, has anyone come across a similar issue who might be able to help?