Connect with us

Hitachi 50" rear projection TV dead!

Discussion in 'Electronic Repair' started by Dani, Jul 20, 2007.

Scroll to continue with content
  1. Dani

    Dani Guest

    Model # 50UX57B Chassis # AP83R, was worked on elsewhere! Both
    convergence IC's were replaced, & I found D910, & D911 12 volt zeners
    in the SMPS shorted. E995, & 996 fuses were replaced. I replaced the
    SMPS IC regulator. All the pico fuses, & fusible resistors are ok.
    Nothing looks overheated. Nothing else is bad, that I can find!
    Nothing is dragging down the secondary of the SMPS, but it just won't
    oscillate! All the capacitors in the secondary, & primary of the SMPS
    check out fine! Anyone see this type of failure, in this unit? Thanks,
    Dani.
     
  2. Changed the optocoupler yet?

    Leonard
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-