A tech was here last week to hook up the Hr10-250 dvr. It powered up to the welcome screen, then went to the next one that said "just a few seconds more" After that it would keep going to a blank blue screen. He tried it three times with same result. He also switched some connections in back and tried to switch the input from DTV to component-1. No go. He made a call to a fellow tech and came to the conclusion that the unit is incompatible with some older model HDTV's. My set is a Mitsubishi WS-55807 serial no. 100186 manufactured in July 2000. It uses RGB cables to connect to the current HD reciever. Directv says they made the unit to work with all tv's and Mitsubishi says they are not aware of any problems. My theories are it is either the tech is not making the right connection(s), a wrong input assignment or the unit was defective. Can anyone help? they are coming to try again tomorrow. Thanks.