I recently unplugged all of my connections from my TV (32 inch lcd flat) to add a shelf to the armoir hlding the TV. After reconnecting everthng, when powered on, my screen flickers for 2 minutes. Then powers off and on automatically. Ive tried unpluggingg power for 60 seconds then plugging back in. No results though. Can u help?? Please?? Superbowl tomorrow!!