Suddenly when watching - the screen went black. We had paused the cable DVR & this happend when resuming play. It is possible that our cable remote may have been bumped at the time. The audio works. I can change inputs - but of course cannot see what is on the screen. Something similar happened several years ago & we somehow reset the TV & it worked. I have tried the recommended HP reset (unplug everything / hold power button for 5 seconds - then plug in) & it does nothing. Once when experimenting - I saw a 'wake up' msg on the screen.
It is either the power supply or the backlight inverter board finally failed. You will need to do some voltages checking inside, also see if you can see any bad caps in the power supply.
See my troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums
Parts: www.shopjimmy.com
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