my samsung ln-r238wa has had an intermitten problem of the picture going blank, then the screen blinks black to snowy. you cannot turn it off at this point. I have unplugged it from the power source for 5 to 10 minutes till it corrects itself. this has worked for over a year. it now is blinking and doesn't appear to be correcting itself as this is going on for over a day. Help!!!
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