wt 42313 color gone

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LouisR
wt 42313 color gone

I have a WT 42313 mitsubishi tv. My tv has blue and green light on- red is out. I recently replaced both stk chips due to convergence issues and bowing effects on screen. After the installation of both new chips, convergence seems fine, bowing image is gone, but the red color is off too. Looking at the back of the tv, the bottom of the lamp is golowing orange like the other two but no image is being output to the screen. Any ideas on what's wrong or where to check? Can I swap neck boards to see if i can get it to fire up? How about swapping the plugs in the flyback? Thanks for any help and suggestions

 

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