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LG Plasma TV 42PQ3 black screen after USB plugging?

I have plugged a flash disk that has mettalic outer shape wrongly in the usb port, immediately the screen went black. It seems a short circuit occured in the usb port.
What is the extent of the damage and how could it be fixed?
Thanks
Mask67, March 2010
how can i fix it

Sherla Rivera, September 2010
how can i fix it

sherla, September 2010
how can i fix it

sherla, September 2010
link Click here to see other fixes for LG 42PQ3.