Mitsubishi WS-65311 Picture Blinking Rapidly on and off!

I own a WS-65311 with low hours on it that I purchased new from Mitsubishi maybe 4 years ago. About 2 months ago the picture started to blink on and off between black screen and the picture. Does not matter which input it is on. I left it unplugged for about a month and it ran good for about 2 months but now it is back again and much worse. Now it blinks very rapidly about 1-2 time per second. I need help from the experts!! I was going to take this to my new house and find an external HD tuner for it, if they still make them, but now I might have to leave it behind. Any ideas?