I have a th50px75u plasma...had it for about two yrs now. We love the TV however we came home one evening, tried to turn it on and nothing happened. The power light doesnt even come on. When I push the power button I can hear it clicking in the back, two clicks, and then nothing happens...I tried troubleshooting, disconnecting power etc butnothing works. All i get is two clicks when I push the power button and then two clicks when i let the power button go. Any advice??