25 inch Bestech missing blue. FIXED

[Sarmstrong60]

I have a 25 inch bestech that is missing/faint blue. I have checked the neck board transistors and replaced IC101 thinking that might be it but no sucess. With the game on in test and the color bars on the screen I swapped the red and blue video signal wires and blue comes up where the red was and red comes up faint where the blue was. I am probablly overlooking something simple, any help would be appreciated. thanks Steve

[baritonomarchetto]

If the color is not 100% missing there's a chance that the potentiometer that tune the blue color gain is in the need for some setting or is bad and should be replaced

[Sarmstrong60]

After tracing through the circuits and testing and resoldering i have been able to fix the problem. It was a weak blue signal coming from the game board. When I plugged another game into the cabinet all the colors were there. So now I need to find out out to fix the weak blue signal coming from my board.
Thanks for the advice and help. Steve