Question about Vizio XVT472SV 47 in. HD-Ready LCD TV
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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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
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