LG 42pc3dv-ud my tv screen just went totally blank, I can hear sound but there is no picture at all. is it going 2 cost more to fix it then to buy a new one? PLEASE! HELP

You are not loosing the picture. The back lighting is shutting off, Replace the power board.

This is weird. I also have a plasma 50" model PS5Q91HDX and on the 5/02/11 the screen went blank when my friends daughter was watching a Wiggles DVD. The image kept coming back, flashing a scene or two before going black again. But the sound is perfect.

I wonder what is going on? Is anyone else having trouble with their 3-4 year old Samsung 50" TVs???

Hello, if the model number is correct it's not a projection tv, but an LCD tv. If that's correct, it sounds like a bad main board issue part # is AGF31218501...thanks

It could be any of 4 boards, either take it in for service or get a new set.

I Have An LG - 42PC3D-UD, When I Turn It On "It Have Sound And A Very Bad Picture.

Hi, u have clearly mentioned that u are able to hear the sound from ur television. So the audio port of ur tv has no problem. The problem is that the picture tube of ur tv has damaged totally. Video output port has lost its ability to display on screen. If u are in a option of repairing ur tv its better to get a new picture tube or else if u opt for purchasing ur new television its well and good. but the cost for replacing ur new picture tube costs more.

MAKE: LG MODEL: 42PC3DV-UD
P/N: 6870QYH005B

replace display board.
if unit is under warenty
LG is very good at sending out replacment boards.

I have a similar issue. Sometimes the entire screen goes black and sometimes only one-half - either the top or bottom half goes black. The only solution we have found is to gently tap the TV (usually the front side) and the picture will come back for awhile. It almost seems heat related as it only goes out after the first 10 minutes of use. There must be a fix to this.

I have a 42" LG LCD TV and just experienced this today. Watching cable, then the screen went to black, but audio continued. I pressed the guide button on my remote and pic came on with my guide menu. But then went to black again 10sec later and has remained that way for nearly an hour. Tried switching off both cable box and TV, disconnecting and reconnecting cables, but no luck. Finally unplugged mains, waited a minute, then turned back on. Everything seems normal now after the reboot. Phew.