darthphunk
Active member
Hey guys.
I have a Ms. Pac Man cocktail cabinet that I picked up a few months ago. When I first got it, I powered it on and I get streaks on the monitor and a high pitch squeal from the monitor... exactly like the 3rd pic down in the right column here...
http://www.arcadegameover.com/pactrouble.html
"Fast moving short vertical lines covering screen. High pitch squeal from monitor. Caused by shorting 6 MHz clock signal to other chip pins. Also caused by PCB frequencey pot not adjusted"
I checked the fuses, and 4 were bad/blown. I replaced all of the fuses (just to be sure) and I got the same issue. I'm new to restoring cabs, so I sent the PCB off to have it tested. The person who tested it says it works just fine and sent it back.
Could this problem be because of a bad power supply? Both blocks look pretty ratty. I know they are pretty indestructible... but I suspect that one or both may be the issue.
I'm thinking of picking up a swotching PS conversion kit from here:
http://www.arcadeshop.com/parts.htm#Power
Am I on the right track? Is there anything else to check?
Thanks in advance for your help.
I have a Ms. Pac Man cocktail cabinet that I picked up a few months ago. When I first got it, I powered it on and I get streaks on the monitor and a high pitch squeal from the monitor... exactly like the 3rd pic down in the right column here...
http://www.arcadegameover.com/pactrouble.html
"Fast moving short vertical lines covering screen. High pitch squeal from monitor. Caused by shorting 6 MHz clock signal to other chip pins. Also caused by PCB frequencey pot not adjusted"
I checked the fuses, and 4 were bad/blown. I replaced all of the fuses (just to be sure) and I got the same issue. I'm new to restoring cabs, so I sent the PCB off to have it tested. The person who tested it says it works just fine and sent it back.
Could this problem be because of a bad power supply? Both blocks look pretty ratty. I know they are pretty indestructible... but I suspect that one or both may be the issue.
I'm thinking of picking up a swotching PS conversion kit from here:
http://www.arcadeshop.com/parts.htm#Power
Am I on the right track? Is there anything else to check?
Thanks in advance for your help.