Question about Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

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Have the same problem--my KDL-40S2000 turns on for 5 sec then black screen with the "StandBy"LED blinking 4 times, pause, 4 blinks. Is this the transformer? If so, is it economical to fix or toss?

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  • ddenning2 Oct 05, 2010

    Immediately before screen went black first time, heard an "electronic" crack sound; unplugged cord and waiting over 1 minute. Turned it back on and not a normal picture for 5 seconds before screen went black and LED "Stand By" started blinking 4 times, pause, 4-- Does this lead you to the power supply board? If so, what est cost and can I install it?

    Am fairly capable with cars, house but have not tried electronics.

    Thanks, Dan

  • ddenning2 Oct 05, 2010

    Very helpful. Gives me some idea of what to expect from the repair shop and a basis to decide to repair or replace.

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Hi,
4 times red standby light blinking shows problem of back light failure for some reason.
Possible cause could be either back light inverter boards are defective or power supply board is not providing proper voltages to that inverter boards to function properly.
Power supply board is available separately but back light inverter boards come along with new lcd panel (screen) and it would be costly fix as lcd panel cost would be more than tv worth.
Let me know your expertise level to provide you further info.
Thanks.

Posted on Oct 05, 2010

  • Shahid Electronics
    Shahid Electronics Oct 05, 2010

    Electronic crack/ spark sound before tv shut off shows that any high voltage transformer mounted on back light board got fried so go for back light board replacement.
    This board replacement requires expertise as its connected with thin CCFLs in lcd panel that are very fragile and any mishandling will break them.
    As I mentioned before, back light boards come along with new lcd panel but there is a way to have them separately, contact local tv repair shops as they might have similar broken lcd panel to ake out these boards.

  • silverrollas Dec 19, 2010

    I have a KDL40S2000 and have had a similar problem. The picture comes up for a few minutes than goes blank and the standby lite blinks 4 times. I purchased a used inverter board and replaced it and cured the problem. Did not replace the lcd panel as it was fine. Replacing the board was not very difficult.

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