RCA 60" projection tv Turns on and starts flipping channels by it self

RCA P52937SG my tv flips channels and won't stick to any one with use of the remote or the buttons on the tv itself, (it doesn't have guide plus marked on the outside of the TV anywherer) Simply put I can turn it on via remote (most times) or via the panel on the TV it starts Blipping on/off every say second and won't respond to the remote or (most times the control panel on the front of the TV) Next it starts flipping channels like it's looking for a signal meanwhile I'm constantly hitting the menu button and the channel up or down and there's no response. When i finally get the TV to a channel where I have cable box picture and hit menu at the same time (by the grace of god) it will show the menu (sometimes it will just scroll up and I can do nothing) sometimes I can go thru the set up and tell it cable and channel input 1 or whatever and it resets and is fine for a moment then it turns on recognizes the cable box channel and it starts comming in and out every second or so then it goes to flipping again. And Yes I have unplugged it for a bit and powered it back up again and still the longest it runs without interruption is a few hours? any ideas? RCA P52937SG my tv flips channels and won't stick to any one with use of the remote or the buttons on the tv itself, (it doesn't have guide plus marked on the outside of the TV anywherer) Simply put I can turn it on via remote (most times) or via the panel on the TV it starts Blipping on/off every say second and won't respond to the remote or (most times the control panel on the front of the TV) Next it starts flipping channels like it's looking for a signal meanwhile I'm constantly hitting the menu button and the channel up or down and there's no response. When i finally get the TV to a channel where I have cable box picture and hit menu at the same time (by the grace of god) it will show the menu (sometimes it will just scroll up and I can do nothing) sometimes I can go thru the set up and tell it cable and channel input 1 or whatever and it resets and is fine for a moment then it turns on recognizes the cable box channel and it starts comming in and out every second or so then it goes to flipping again. And Yes I have unplugged it for a bit and powered it back up again and still the longest it runs without interruption is a few hours? any ideas?