Please help!! i have a mits ws 55411 hdtv bought it used 2 yrs ago. love it. but now while watching anything, dvd, sat, video games, the screen flashes black, the audio doesnt change and the green light doesnt flash. ive unplugged it for up to an hour, pressed the reset button on the front. im lost, my wife wants to replace it with a smaller one, i need to fix it. thanks. }