I have a smart 42" LG mounted on the wall in a bedroom. About a week ago it started turning itself off then a couple of seconds later it would come back on. This would continue several times then would stay on. Last night it started the same thing again but would continue turning itself off and on until I pulled the plug on it. It would not respond to the remote to turn off. Is this thing worth repairing or should I just replace it. The reason I hate to replace it, is it has one of the best quality pictures I have seen, for what it is.