All functions were working fine, then picked up remote to control the volume, it didnt work, tried using the volume keys on the tv itself and they dont work. Neither does the power button or any of the other functions on both the remote and the tv itself. Help, is this fixable with some kind of reset. The only thing I can think of is unplugging the tv, but I'm scared if I unplug it, it will not come back on. My cable remote can change the channel on the cable box but not even that remote can control the tv anymore!