Mitsubishi VS-5042, (VZ2 Chassis?)

[Maxxarcade]

I am trying to fix this tv at work, it goes to a video game.

I recapped the chassis, rejuvenated the blue crt, and everything is working perfect now, except for the red dropping in and out.

Flexing on or near the signal board makes it go in and out, and I suspect it is a connector problem. Everything has been resoldered already. Does anyone have schematics, or know the path of the red signal from the signal board to the connector "RM"? If I knew what pins and traces it followed, I could find the break easily using my scope.

[kc8adu]

Re: Mitsubishi VS-5042, (VZ2 Chassis?)

resolder the jungle.
seen this problem and others in mitz sets.
it has tiny pins and pads and they were soldered very thinly on many sets.

[Maxxarcade]

Re: Mitsubishi VS-5042, (VZ2 Chassis?)

Where is it located? Most of the chips in this set have PA0XXX numbers that I can't find data sheets for.

[Maxxarcade]

Re: Mitsubishi VS-5042, (VZ2 Chassis?)

Fixed it

It was an invisible break in the trace that connects the last pin of the AV board to R2069. Found it probing around with the scope. It was a real bitch