> Model: F35700SB
> Chassis: CTC 169BD5
> Problem:: Overdriven red on OSD and printing. pix looks good otherwise.
> Set also goes into red screen w/ retrace ONLY during channel change and at turnoff.
>
> We changed out the main IC TA8680N U1001 with a replacement; TA8680BN.
> . No change but we lost all color. Had to sub in (B&D recommended sub
> TA8680BN, as OEM was NLA.) Replaced it with original and color came
> back- (defective new IC.)
>
> Replaced U3101 SC420111P (Thanks to Mark W for the part!), No change.
>
> Pin 15 of U1001 goes up to 6.1 V when channel changed.
>
> Swapped red & blue on CRT bd and problem moved. That eliminated it back
> to the U1001.
Also swapped out U1001- no change
Fix: bad q2906 video driver transistor Replaced with ECG 159. Thanks to Gary Thompson for the fix.
Frank - HQ Electronics 218 N 1st ST Shelton WA 98584 360-426-3336
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