Pacman G07 Color Issue

dazras

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Hi Guys! I have an all-original full size pacman with G07 monitor that has color issues. Blinky is too blue and Clyde is not orange enough. I've tried moving all 5 color knobs. The ghosts look great when they're supposed to be blue and the maze blue looks good. Picture attached. Not sure if there's anything else to do before doing a cap kit. Thanks for the help!
 

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I can see your blue is too high. It's bleeding through. You might want to turn down the bias. Your brightness is high too (screen control on back of flyback).
 
Thanks, behrmr. How do I turn down the bias? (Noob alert) but at least I know how to adjust the brightness! Thanks again!
 
Thanks, behrmr. How do I turn down the bias? (Noob alert) but at least I know how to adjust the brightness! Thanks again!

the drives and cutoffs are pots on the neck board. if you decide to do a cap kit i have the top quality 100% nichicon 105c cap kits for your monitor.
 
Thanks, behrmr. How do I turn down the bias? (Noob alert) but at least I know how to adjust the brightness! Thanks again!

You probably want to adjust the blue cutoff which is the first adjustment pot in the set of two pots on the neck board. You can probably correct your yellow the same way by tweaking the green drive (middle one on set of three) and the red cutoff. Based on what I could see in your photo I would say your monitor is working OK and image looks good.
 
Thanks, guys. I played with all the color adjusting knobs but the ghost color problem didn't change. The screen washed out in the 3 colors as I turned them up. What can I do or check next? Thanks again.
 
check tube color guns with crt rejuvenator and go from there, that is if you adjusted your pots correctly.
if everything checks out with tube and neck board, it is possible that you have a color prom on logic board going out.?

try another chassis also.?
 
Fixed!!!

The mini-board on the bottom right of the picture was slightly loose, so I reinstalled it and now the colors are good! Thanks everyone for the help!
 

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