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Hitachi 50" rear projection. Dead!!

Discussion in 'Electronic Repair' started by Dani, Jul 24, 2007.

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  1. Dani

    Dani Guest

    Model # 50UX57B, Chassis # AP83R, dead, was worked on elsewhere, both
    convergence IC's were replaced, & E995, E996, as well as IK04, & IK05.
    D910, & D9110 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.
  2. Guest

    How does the pulse look did you check peak to peak & freq
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