Playchoice top monitor scrambled!

Vongoosewink

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Hey all,

Need help with my Playchoice. The top monitor was working perfectly, and I shut it down to swap out some carts. Once the new carts were installed and the machine powered on, the top monitor was scrambled. I tried re-seating all the connections, and nothing fixes it. I'm stumped!!!

Any ideas? I can't figure out what I did to this!

Crummy photo below...

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I thought that at first too, I tried adjusting it and it didn't correct it.
 
Last edited:
OK, here's another update.

I tried swapping the signal connectors to the monitors, so that the top monitor displays the game and the bottom displays the instructions. Guess what? Both shop up just fine, with no scrambling. Swapped them back to original, top monitor is scrambled. Horizontal adjusting does not correct it at all, the error is in the signal coming from the board. I tried swapping it out 4 or five times, always the same result.

I can play the game now with the monitors swapped (game on top, instructions on bottom) but this is a bit weird and not really comfortable.

Does anywhere sell the rgb sygnal connectors for the Sanyo monitors? Maybe the one to the top monitor is bad, or doesn't like that monitor...

Any ideas here?
 
does it still do this after wiggling the connectors? or perhaps, when you try wiggling the end that's plugged into the video signal header?

someone else had this same problem, I'm inclined to believe it's not the H-Hold pot, seeing how both monitors work fine when you swap the wiring harnesses.

I'm leaning towards either cold solder at the signal header (or in other places too), or perhaps you just have a bad wire. I'd check those, tell us what you come up with.

btw, were both monitors capped recently?

EDIT: judging by the diagonal lines in the picture, it's not a horizontal issue, it's a complete loss of sync. check the sync pin or the wire itself. when you swapped, did you swap at the video signal header or where the harnesses connect together?
 
The top monitor was capped about 6 months ago, I'm not sure when the bottom one was capped last, but it looks great. But the bottom one has not scrambled at all.

Wiggling the connectors does not seem to do anything.

The wire to the top monitor is longer, so I'm not able to swap the entire signal wire as the bottom wire isn't long enough. Both have a molex-style connector leading from the game harness to the rgb signal wire. The long wire seems to be the one with the problem. I'm wondering if there is a problem with it and it is getting too much resistance, so the horizontal signal does not come through all the way?

I'd really like to get a replacement rgb-to-harness wire for the top monitor, and see if that corrects it. Anyone make these, or have a spare?
 
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