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Try the remote menu leading to picture adjustments.
If nothing comes on the screen then you have a Serious failure on the board. No user fix, back to the dealer I am afraid.
Im hoping you had a spike and blew a fuse. If you feel comfortable checking for a fuse problem check that other wise you might have blown a voltage regulator or a transistor
Technician just replaced the upper right (from the back) circuit board that conects to the panel. TV now works fine. I bought the display model 8 months ago with extended Circuit City Warranty for $1000 so I can't complain. This was covered entirly by LG/Zenith (nicest Cust. Svc. ever) so we'll wait and see what happens.
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