How can I fix black screen on Philips 42" LCD TV?

If you saw no faint picture with the flashlight, then it's the T-con board.

Use a flashlight on the screen when it goes black. If you can see a faint picture then the board that controls the back light has gone bad. If you see no picture then the T-Con board is bad. You can get replacement parts here: TV Parts Universal TV Stands DLP Chips ShopJimmy and fix the TV yourself. It's not that difficult.

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Widescreen TV Black Screen - Repair LCD LED PLASMA ...

? 3:41
https://www.youtube.com/watch?v=RbZncfiOXQA
Jul 13, 2011 - Uploaded by FixItUrselfDummy
Fix your tv with black screen blinking light, popping sound noise. ... Watch QueueQueue ... TV Black Screen - Repair LCD LED PLASMA - Problems SONY LG .... I have a 60 inch samsung DPL tv how can I stop the humming or ... What do I do if my tvturns on but its just a black screen so sound no picture?.

Sounds like a main board that controls everything on the screen and then some.

Since a LCD do the flashlight test (what I call it) : darken the room as much as possible and with a flashlight and the set on look closely at the screen, see a very very faint image of the picture or not?

Sounds like you have a back light fault. Dim the lights in the room, turn the set on and shine a bright flashlight on the screen. If you see a faint picture, you have a back light fault. If you do not see anything, you have a video feed problem. Either way, I would suggest getting the set diagnosed to pinpoint the problem

When the screen goes black, shine a flashlight on the screen to see if you can see a faint picture. If you can then the ballast board for the backlight is bad. If you can't see a faint picture, then the T-CON board needs replacing. You can get parts from here:
TV Parts Universal TV Stands DLP Chips ShopJimmy

Hi,

There is a problem in this card ( TV turner ) some chip is over heating or as leakage ,there is s a big IC ( Microprocesor ) this chip if the cooling system is not good due to workload the screen will bahave that way
pls swap it get it changed .


good luck

When you tune to a station and get sound I presume the screen is black so do the following.
Place a bright flashlight against the screen. Look for an image around the edge of the flashlight.
If you see an image the problem is probably one of three causes.

1) Power to the inverter board is bad.
2) Inverter board has failed.
3) The CCFT(cold cathode fluorescent light) are dead.

Someone knowledgeable in electronics can diagnosis it.

If you get some pictures the problem is most likely a bad tuner, as when directly connected a video source to the RF (Cable Coax) connector.
Try using an s-video cord instead.
If you never get any picturethe problem is related to the power supply, more precisely, the SMPS output is just a bit high causing the microprocessor to go into protection mode cutting off the horizontal oscillation, but as sound has a different power source from the SMPS, it will work without any problem. You will have to get to a qualified sercive engineer to fix this problem.

Sounds like plasma burn in. I'm fairly positive this TV has a white out burn in removal in the menu somewhere. Look for it. It should be a program that makes colored static all over the screen or a white scrolling bar followed by black fading into white again. Run it for an hour or so. If that doesn't fix it, there's not much else you can do.