Sanyo EZ with tons of Blue!

gozer5454

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Had the typical jailbars and fuzz rolling on this monitor when I bought it. So, capped it with Bob Roberts audio/ video kit. Now, everything seems back to normal, except for the blue levels. They're thru the roof. The game is playable, but too much blue. In fact, the screen has those somewhat diagonal/ evenly space lines (like when the flyback is pushing to hard), but in blue as well. Where should I start? Is there soem resister or wire that directly controls blue on the board that might have snapped? Any one else every have this happen? Any ideas?

I have tried adjusting the blue levels, but either my pots are dead (both blues and only both blues) or something, becuase there is very little if any noticable change when I turn them. I will be picking up a couple spare 200 and 2000 pots tomorrow just to be sure. Green and red levels seem to work 100%. Only problem is with blue.
 
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Does the blue go away if you disconnect the video input connector?

Sometimes there is an inverter board that the signal goes through, even if it isn't being inverted, and it has a blue pot on it. Also, it can cause problems, so if you have one being used, try connecting the signal without it.

You can try removing the blue drive transistor on the neckboard. If it stays blue after that, then I'd lean toward a problem with the tube, and a rejuvenator will be necessary to see if it's a lost cause or not. If it goes away, you may need to replace that drive transistor...
 
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