C4770 transistor question/ no red??

phatchit

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Would bad c4770 cause only the red not to work? I have a wellls gardner in a madden season2. I have blue ,green ,yellow but no red . it just shows as a dark gray. Im stumped on this one . i know that the 4770 is controll the high definition color display. but i would think if this is bad i would have no color but what ever. Ive also tried a new vga cable and checked the transistors on the neck board and contunity between the vga board to the neckboard and all chaeck out good. any one have any suggestions.thanks guys
 
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