Power light comes on but no picture - Vizio E390-A1 39" 1080p 60Hz LED 2.95" ultra-slim HDTV

Replace the 12volt regulator on the deflection panel. This ic sets at the back along with 2 other opto's. It is the middle one.

on off sensor sounds like its bad

if the set appears dead ecept for the power light, unplug the power cord from the back of the set, wait two minutes, then plug it back in and try to turn on the tv. Doing this worked for me.

This is very common in sharp tvs.U turn it on.U get power on light stable right?U hear a click,one or twice,sometime tv is good right?Sometime POWER light and OPC light flashes?Push the power button on/off couples times will work, picture will come on.If keep trying off/on couples time after POWER and OPC flashes,don't ever stop and never get backlight and picture.Ur Video backlight board is dead must replaced.

60PL9200D/37 When I unplug it for a while and turn it back on, the picture starts to come on, but it turns dark. And the red lights on the left and right side of the power button blink. Sound but no picture.

weight till it is very low battery then charge it again

Solder bad connects in power circuits....Check all power supply
voltages with meter, consult service manual........T.

blown capacitors on the power or vga board inside