I acquired a Ms Pac some time ago that played blind, and needed a chassis and a tube. Oryk hooked me up with a tube, and Peale helped me with a chassis. I hooked everything up last night, and, of course as my luck likes to go, the game now does not play. I have checked the edge connector (and cleaned it), checked all of the fuses in the brick with a DMM and they are all good, reseated chips, and the best I can get now is the screen powers up with a bunch of garbage, and it makes a sound that is similar to Atari 2600's space invaders (*chip* *chip* *chip* *chip*), almost like a marching sound. I disconnected the monitor to see if I could get it to play blind again, and of course it won't.
I have a Ms Pac switching power supply lying around, should I try swapping that in to see if maybe it's a power issue? It got late on me last night after I hooked up the monitor, so I didn't get time to check out the schematics to test for power ranges going to the main PCB. I also don't have an extra Z80 lying around to put on the board to see if it's the Ms Pac daughter board.
Any chance this could be related to whatever that filter board issue is that people talk about?
Nothing like a game that plays blind, and then you get it to "see", and then it don't work.. That's how alcoholics are born...
I have a Ms Pac switching power supply lying around, should I try swapping that in to see if maybe it's a power issue? It got late on me last night after I hooked up the monitor, so I didn't get time to check out the schematics to test for power ranges going to the main PCB. I also don't have an extra Z80 lying around to put on the board to see if it's the Ms Pac daughter board.
Any chance this could be related to whatever that filter board issue is that people talk about?
Nothing like a game that plays blind, and then you get it to "see", and then it don't work.. That's how alcoholics are born...
