3 Wonders PCB - wavy picture issue

trevofour

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I recently purchased a 3 Wonders board, plugged it in and get a distorted picture as shown in the attached jpeg. The sound is there, and it is playing through the attract mode.

I have around 15 other boards ranging from standard Jamma, CPS1, 2 and Neo Geo - and none of them have this issue. Otherwise I would've suspected it's my monitor. It seems like that would be the issue since I'm betting the graphics are fine if they weren't squished and wavy.

Looking closer at the board - it looks to be a bootleg (it's a CPS1 game yet is just a single board instead of two). Also notice the connections are stripped of the gold that is usually there. They've been worn down to silver.

Any suggestions? Going to contact the seller now. Kinda odd since he showed screens of it playing fine. Thanks for any help!
 

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Have you tried adjusting the holds on the monitor? I know once i a while ill plug in a different jamma game to my cab and it will need a tad of adjusting.

Just a guess. good luck!
 
What type of monitor is it? It looks like it's a horizontal oscillation issue.

On a 4600, there's a pot on the XY board that you can adjust to get the screen back.




Either way, it looks like that's the issue. I'm not sure where that is on other monitors.

Since other boards are running, MAYBE this one is just a smidge off and the monitor needs to be adjusted for it?
 
Thanks for the reply guys!

It's a New Astro City w/ an original MS9 monitor. I decided to return the board since getting to that specific knob requires me to take the front frame off. Really not worth it if I need to readjust the knob time I want to play the game. I'm more along the lines of "Don't touch anything" with the cabinet since I have a ton of boards that all work flawlessly. Plus it looks to be a bootleg board and I'd rather have an original.

I thought maybe since it was a bootleg board it might be running in 15kHz instead of 24kHz but that's just a guess and probably wrong.
 
As others have mentioned, it might just a be a monitor adjustment issue, or it could well be a fault with the game board.
 
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