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Have beko 32inch L C D , when i power on it comes on for a 5second and then the screen goes black, i still have sound, just no picture? model no 32WLK53OHID and back light is working i cant see any thing on screen no menu nathing on it .when i turn on the tv i can see picturs abut 5 ..6 seconds then from left side geting dark and its spred to right side within second but sound is there am using R F in antena and i tryd dvd player but i cant see any thing when the prob starts i can here the hmmmmm.. sound from power suply side

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Hello,
This can be solve by the following
if the backlight is powering up a bit with a slight glow the issue you are having is about 90% chance of being either the backlight power supply inverter or the main power supply have dropped one of the output voltages. If you would like to try and repair it yourself, you can take the back of the unit off and get to the power boards. Look on both boards for parts called capacitors that have bulging tops. When the start failing in the power supply boards one of the classic symptoms is no video just as you have. If you see the bulging capacitors on the board they will need to be replaced and you should have a fully functional TV again. Yes, You will need to use low ESR, high temp and high ripple current capacitors.
Thanks for asking.


Posted on Jun 04, 2010

  • jayampathi44 Jun 05, 2010

    hi

    thx for reply back light is working good and i cant see any bulging capacitors on the board but i can here hmmmmm sound from one transformer when i power on y is that ??



    thx







  • Sanyade Akinwale
    Sanyade Akinwale Jun 05, 2010

    Hello
    The only solution for this problem is for you to get a new power supply board try website like
    websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
    thanks for the comment..


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Re:"i can see picturs abut 5 ..6 seconds then from left side geting dark"

That is either a faulty inverter or a faulty PSU. The parts must be tested to find the culprit.You do not fix this using a remote.

Testing must be done by a technician, by testing voltage from PSU to inverter. This will be the higher DC voltage from PSU.

The inverter can be tested reading DC out from digital controller (I think 20V on this TV). If there is volts, then the inverter is bad. If there is no power in the connector, then inverter is OK, and problem is likely PSU.

Goodbye.

Posted on Jun 03, 2010

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