Question about Beko 324250WN 28" TV

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BEKO TV. MODEL NR32WLH530HID 145 WATT WHEN SWITCHED ON AT THE TV OR WITH THE REMOTE CONTROL PICTURE AND SOUND COME ON. PICTURE GOES OFF AFTER ABOUT 3 SECONDS SOUND STAYS ON. WHICH CIRCUIT BOARD DO I CHECK ?

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  • rwd1552 Mar 27, 2011

    Thanks for your help, would it be possible to down load the circuit diagram, service manual for this set, for which i would pay?
    Thanks again,
    Rich.

  • rwd1552 Mar 27, 2011

    Hi jdvillanueva,
    Thanks for your help, what is the best search link to use would be helpful in the future.
    many thanks,
    Rich.

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Hi rwd1552,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.

Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to troubleshoot the symptoms.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Posted on Mar 26, 2011

  • 1 more comment 
  • Jdvillanueva
    Jdvillanueva Mar 26, 2011

    I've suspected that the fault is coming either #1 or #2.

  • Jdvillanueva
    Jdvillanueva Mar 27, 2011

    Hi again, I've try my best searching your service manual on my link but I can't find one. Your model no. is currently not yet available...

  • Jdvillanueva
    Jdvillanueva Mar 27, 2011

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