Auria TV

I bought a 42 inch Auria tv on Black friday a year ago. Two nights ago I turned off the TV and it would not turn on again right away. Last night My power went off in my apartment and to turn it back on it took about 20 min of pulling the power plug and plugging it back in to get it started. Then today I went to turn it on and did the whole pulling the power cable stint and it wont come on at all. It has a red light when it is normally turned off and green when it is turned on. When i push the power button it turns green for about 3 seconds then it acts if it is going to turn on and then it powers off to the point where I have to unplug it and plug it back in to get any light. Anyone have any idea of whats wrong with it? I think it might be the power supply but getting the tv to turn on two more times and working fine for a couple of hours makes me wonder if it is something else.