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My Sony LCD TV has audio but no video

My Sony 26 Inch LCD TV has audio but no video. I replaced the inverter board, but it still does the same thing. I can not even access a menu.

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Seems like your time-control board a.k.a. (LCD BOARD) is defective or the power supply board is not producing working dc voltage too the inverters. In that case the power board would need servicing. It could also be the CCFL lamps but thats very rare. See if the inverters are working by only disconnecting the wire(s) going from the inverter too the lcd-board. If the lights come on after you disconnect the lcd-board from the inverter then you know its the LCD board thats the fault here.

Posted on Nov 13, 2009

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Back-light problem.Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis.If you wish to get some details; check the site linked here.Surf the site with patience.Pull up older posts.It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/

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I would suggest to check the 24 volts from the power supply to the backlight inverter board. If the voltgage is missing or lower then 20 volts, the power supply is defective. If the voltage is correct, you might have a defective light inside the TV behind the screen since you've replaced the backlight inverter board; you now the failure is not there. The lights are connected to the backlight inverter board.
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