Centipede missing green?

HighScoreSaves

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My $40 CL find turned out pretty good, however, missing the green in the monitor.

Monitor shows green on another machine.

Game play is perfect, anyone know where to start on the pcb? Anyone have this issue?
 
Double-check your ground from the board to the monitor.

If you have a logic probe, check the following to see if anything is not toggling:

C8 pin 7 (color palette RAM)
A8 pins 13, 15 (register)
A9 pins 11,10 (OD buffer)

If these look ok, I'd try replacing the 3904 just because they're cheap.

My $40 CL find turned out pretty good, however, missing the green in the monitor.

Monitor shows green on another machine.

Game play is perfect, anyone know where to start on the pcb? Anyone have this issue?
 
Just to clarify, the Red and Blue are working.

I will check the ground, and unfortuantely dod not have a logic probe...looks like I need to pick one up.
 
Here are some pics.
 

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i don't mean to sound stupid, but the levels in attract can be different colors based on the level the game ended at. have you played the game to see if the colors change at all?
 
Yes.

I understand what you mean in attract, changing color schemes. However, the first level, or any for that fact, do not show green.
 
UPDATE -

Fixed.

I found another pcb to throw in there and it came up correctly! Wiring, PS, etc. was fine. Sent other pcb off to get fixed.

Thanks for the help everyone!
 
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