When it powers on, it goes to a black screen then powers off again. Then when its turned on again, it stays on, still black screen. Non responsive after this point. CANNOT turn it off without unplugging it, no menu, NOTHING
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Re: GV42L Vizio HDTV Problem
You didn't mention whether you have any audio; details like that can influence the response.
If you have audio but no visible video, look at the screen from an angle for 10-20 seconds to see if any video is present.
If you do see some shifting shadows on the screen and have audio, the backlight or its power supply (inverter) has probably failed.
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Technically the picture is still there an lcd is lit up by powerful backlights called ccfl's (cold cathode flurecent lamp) and they are powered by an inverter which takes the reletively low voltage up to a high or higher voltage to power them, if the inverter or inverters need changing it's not so hard to do. to confirm this shine a torch on the screen when it goes black there should still be a picture> :-)
there are several possibilities. first if the unit comes on and the
"VIZIO" light turns white, but no picture or sound, then the main
control board is most likely the issue. could be the LCD control
board(s) depending on model one or two. and ultimately could be the
power supply on the upper side....if the "VIZIO" light does NOT turn
white, the whole power supply unit is out. after that, would have to
scope the circuits to find out. Seems that the control board is the
most common and tends to happen on many different sizes. new board will
be around $350.00. Might get lucky and find a used one, but it MUST be
EXACT part or it wont work right. if you dont find one or want to sell
yours for parts, id be interested in the screen. can reach me at
email@example.com. thanks, keith
May be a bad power supply, which is a common problem with these units.I have a GV42L 42" manufactured in march 2007. It works perfect except the screen has a fracture on it. The warranty is voided because we damaged the screen. I can sell this to somone who has a good screen but needs boards or speakers, etc. Or I will buy your tv that has a good screen but damaged boards in it. firstname.lastname@example.org