Hi,
I have a RCA TV model 14F512T, ch M123SP (NO Schematic) in my TV service shop with a vertical deflection problem. I replaced R409 1 ohm which was open (in -12.6 source) and I replaced the vertical IC "IC301". Note: both +12.6 and -12.6 source (measured at source) are present, but still no vertical deflection. Horizonal line is abt. 3/4 down from top of screen. When I open the -12V circuit, in effect removing -12V source, the horizontal line is a little above the middle. Yoke test revealed yoke is not shorted or open. I tested several parts around "IC301".
Has anyone repaired this (or similar) model TV with this problem?
Thanks in advance, Brad
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