20th Pacman/Galaga Arcade machine

arcader1

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hello, i have this machine. The problem is that RGB colors are missing. Not the whole screen only one 2 inch bottom middle the screen. That means when i shift the Galaga fighter from left to right the ship is white in the middle. what can i do
 
Post a pic of this phenomenon, and figure out the model of the monitor chassis...
 
here the photo of the color problem left picture bad. right OK... red color is changing in yellow.....
 

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Monitor needs to be degaussed.

It should do it on it's own after enough cold poweron cycles, or you can do it with a handheld coil.

-Ian
 
Looking closer at the pictures, I see red fringing around the Ms. Pacs in the corner - is that there in real life, or is it an artifact of the photo? Another possibility is that the convergence/purity ring assembly got knocked loose.

-Ian
 
Check too that it might be what is around the game.
I've had instances where I've had a game near a wall and get distortion like that, but when I move it from that wall the game is fine.
Hopefully that fixes the problem.
 
Degaussing will fix the color in the corner. And you red is up too high. The maze should be pink, but not THAT pink. Dunno if that is causing the red to bleed or if the red convergence is off a little...
 
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