No Blue in Monitor

Eddie306

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So I have a Konami Sunset Riders 4 player arcade game. The monitor is crisp except there is no blue. I tried adjusting the color, but the 2 dials that are for blue do nothing. I tried replacing the circuit boards for the monitor and still nothing. Any ideas? I'm new at this so be gentle.
 
Sounds like a bad picture tube, especially if you've swapped the entire monitor chassis. Even if there was a fault in the wiring going to the game board, you should have been able to get a hazy blue screen by playing with the blue cutoff and drive controls. If you want to be doubly sure, you can swap the pins around in the video input connector - swap blue with red or something, and see if you have any blue then.

Try to find someone local to check your tube with a picture tube tester. You should even be able to bring the monitor down to a TV repair shop and have them test the tube. A picture tube tester usually also has a "rejuvenate" function, to attempt to burn the contaminants off a weak cathode in the tube to restore emissions of a gun. Sometimes it works... sometimes it doesn't.

-Ian
 
Forst try Retorhacker's suggestion on swapping signals.

Then, if it works out, check the transistor in the blue circuit on the neck board.

If that don't pan out, your blue gun may be shot, try rejuvenation.

If that don't work, then you're pretty much SOL.
 
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