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Tv has no picture. I was connecting RCA cable from my computer to tv and put the wrong connections on to the tv, now the picture is gone but the sound still works and also does the on-screen settings

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I would suspect the backlight inverter is faulty:

I would try to look on the power supply first for popped capacitors that supply the 24v rail for the backlight inverter.

Having sound is a positive when it comes to repair. This means that only your screen is not lighting.

If you repair the 24v line and check the 5v feed also going to the BN_on (on) the backlight inverter and you still have no will need a new inverter.

If you have menus then you may have also shorted your mainboard (AKA tuner board)

Posted on Mar 16, 2011

  • shash_128 Mar 16, 2011

    Thanks for your help! I don't know much about fixing tv's but if I try fixed it myself is it possible? If so how would I go about doing it? If i open up the tv where would I find the 24v line?

  • Andrew P.
    Andrew P. Mar 16, 2011

    The 24v line will be marked on the power supply (stamped on there). You need to be careful with highvoltage. I've done this a lot and you need to be careful. It is possible to do yourself with the right research and plan correctly.

    Please rate if this helped :)



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