Hi I am sorry if this has been dealt with before. If it has I have not found it. I recently bought a tm600 with a UR image on it. When I power thr box up all I get is the UR screen on the TV and the four dashes on the box are continuously cycling. The remote doesn't seem to do anything. I cannot switch the box off with either the remote or the button on the front panel. Can anyone advise where I go next. I am a complete novice and don't understand many of the terms so please be gentle with me.