I'm a technician so I can handle the repair. I just don't work on White Westinghouse LCD's much.
SOURCE: lcd screen white when turned off
The Backlight is not turning off.
Try a hard reset, unplug the tv for several hours.
If the reset does not correct the problem you will need the Power Supply replaced.
If the unit is still under warranty you will need to return to the merchant or send to manufacturer for repair.
If I can assist further please let me know.
Lone99star
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee
SOURCE: Westinghouse LCD TV freeze
I have the same problem ..... i just give it a good whack on the top of screen and the picture comes back.
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