Model # 50UX57B, Chassis # AP83R, dead. No startup in SMPS. After doing the following repairs, it just won't oscillate, no leds on the main PCB light at all. It was worked on elsewhere, both convergence IC's were replaced, & E995, E996, as well as IK04, & IK05. D910, & D911
12 volt zener diodes shorted, C707 near the flyback, & horizontal output are fine, the SMPS just won't oscillate! The three opto couplers check ok, as well as the SMPS electrolytics! Ideas anyone? Thanks, Dani.