Question about Vizio VW42LF 42 in. LCD HDTV

2 Answers

I have a vol37. when powered on i get sound but no picture. the screen is black with white light in the backround. i've tried all inputs same results. please advise thanks

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  • qbase409 Dec 11, 2009

    i'm trying to narrow the problem down to which board or area i should be checking. i have taken the back cover completely off. power on no picture only sound back light is on with black screen. all video inputs same results. please advise. thanks

  • qbase409 Dec 19, 2009

    i have replaced the main board ( with all inputs ) , replaced lcd contoller board and lcd inverter. what else could be the problem? please advise. thanks

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From the description of the problem, it seems that the video IC of the TV has gone.
Open up the rear cover and take a look inside. Look for some bulged or burst capacitors. A capacitor is that round cylindrical thing jutting out of the PCBs. If found just replace the module for ease or replace the capacitor if you are adapt at soldering. De-solder the item and procure ones of exactly the same specifications. And then solder them back. But make a note of which one from where as they are all different.

Posted on Dec 12, 2009

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Clearly an electronics malfunction - either in the signal processor or the video final module. The tv must be opened and tested to determine what is to be fixed. Call a repairman.

Posted on Dec 11, 2009

  • Azrael SRL Dec 20, 2009

    I suppose you are sure that the boards you put in are new and perfectly functional. In that case the problem is either in the connectors to the lcd panel or the panel itself.  

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