My Polaroid SSDV2811-I1 - 28 in. LED TV - 720p was working fine then went to change the channel and then it says Standby Cause No Operation for about 3 seconds then switches off for about 10 seconds before coming back with the same message whilst the red flashes. I have tried unplugging and plugging back again and switching it off from the display itself as well as the remote but neither are working, please help as not had the tv a year yet? Thanx in advance