You will get a white screen when you unplug the t-con from the main board. Doing so removes power to the LCD panel. Verify that all of your voltages from the power supply are correct. If they are, I'd look at the t-con board. It sounds like there is a problem with the t-con that is pulling down the main board.
to check for led eror vol_ channel+ hold and press power switch once andrelease only power switch triangle light should come on then release the vol and channel knobs if set comes on the leds defective in screen
Okay, I found the problem. There is a problem with the ccfl (lamp) groung PCB. Mine is completely burnt through. I am going to attempt to repair it, but will likely need to extract it from a different unit. This board is on the front right of the lx in the lamp housing behind the lcd panel. What is happening: The inverter circuit on the power supply is detecting that one of the lamps is not lighting and it goes into shut down.Hope this helps!~Seth
Hi I have the manual with me in pdf format .I dont remember from where I downloaded the manual. If you can provide your email address Then i will sent you the manual. Its not possible to upload through fixya. Or you can contact me on my email address. [email protected]
Not all televisions have Firmware Updates. They are only updated for a specific problem or to add a feature to a new set. Firmware tells the unit what to do, and what to allow before the software loads. Software Upgrades are more likely and are not fraught with the dangers of firmware which if fail, usually means buying a new motherboard. For software, you just try again.