It's possible that you have a faulty component on one of the circuit boards inside your tv.
\015\012It sounds like your backlight is working OK since the screen is lit up despite having no video so the fault is either with the MAIN BOARD, the POWER SUPPLY BOARD, or the LCD CONTROLLER BOARD (otherwise known as the TCON BOARD).
\015\012Does the sound work properly for any of the inputs or is that blank as well?
\015\012Was there a power failure or brief power flicker that you noticed at your home recently?
\015\012These can precipitate failures as the LCD TVs are succeptible to power fluctuations.
\015\012Is your TV still under warranty?
\015\012Are you willing and capable to unscrew and open up the case to the tv to conduct a visual inspection and some basic troubleshooting?
\015\012One asy thing you can try before starting the hardware / circuit board troubleshooting is to unplug the power cable to your set and leave it out overnight. Plug it back in the next day and try turning it on again to see if the fault was cleared by the reset.
\015\012If that does not solve the problem then just comment back here to this page with the answers to the above questions and I will go into much greater detail about the various troubleshooting procedures you can employ to diagnose the problem with your tv.
\015\012Thank you very much and good luck.
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