I have a strange problem with the mentioned tv set. When looking something on one source, e.g. the tv decoder box on hdmi 1, the tv starts to cycle trough its sources. So after a while it changes to hdmi 2, then 3, and so on. Analog and digital tv receivers not excluded. I already took the batteries from the remote, excluding it to be the culprit in this matter. I have no idea where this has come from, and how to end this miserable problem. The problem has worsened over time, making it impossible to watch proper tv now, with changing of sources after less than five minutes. Does anybody have an idea what to do? Or is my tv end of life, and do I have to start looking around for a replacement?