Question about Vizio XVT472SV 47 in. HD-Ready LCD TV
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Posted on Jan 02, 2017
There remains only the fluorescent back light tube(s) or the inverter that supplies high voltage for it (them). If you had no warning flickering, I would look for the inverter board.
Posted on Dec 01, 2010
You can look at the various module failure symptoms and service / replacement options for the L42HDTV10A here:
Posted on Apr 25, 2013
Im having similar problem and with my limited knowledge of lcd tvs and the voltages ALL being good except the pwr on or sw on voltage from the main board to the power supply which tells it to switch everything on Im guessing that something is going wrong on the main board. In the condition where it freezes it (the power on V) which switches everything on i get varied voltages such as 2.5 or 3 or (the normal 5v) and then when nothing powers up (blank screen) i read 0v on pwr on voltage but all my other voltages are corect (24v to inverter, 12 v to main board, 5v, etc.) Im guessing from researching this is that there is in improper voltage somewhere in the main board circuit. I have been unable to find it so i may order another board and post back.
Posted on Aug 21, 2013
Amber light on means standby voltage is high. IF amber light does not go white when power button is pushed the its one of two things.
A. No power on command from main board. Usually labeled PS-On. Should go high from 3.3v or maybe 5volts. If not present Main is defective.
B. If the ps-on line is going high then your problem is a defective power supply.
Posted on Oct 15, 2013
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