Here are some things you can do with your Comcast DVR box that few people know about.
First, all of these techniques are done with your DVR OFF and your TV ON. This is extremely important.
Take your remote and point it at the box. Locate, on the lower right, the small button that says "HD/Zoom". Hold this button down until a blue screen shows up on your TV. the screen will give you instruction concerning the buttons the in the upper central part of your remote. There are three buttons labeled A, B and C. The A button is in a yellow triangle, the B button is in a blue square and the C button is in a red circle. Follow the instructions on the screen to set up or reprogram your DVR. It also might be useful to have your TV manual with you when you do the set up so you can make the TV's specs. This same menu system can be found by holding down the "Guide" button down simultaneously with the "Info" button on the front of the DVR (again with the box off).
Another way to program your DVR (again with DVR off and TV on) is to hold down the "guide button". A screen will be displayed that has a black background and highlighted information. If you press the down directional button (down button is one of four surrounding the OK button) you can then go to the various changeable areas and make alterations. This is a much more technical set of instructions, but these can make a bigger difference. As an example, we lost power a couple of days ago. When we got it back, the TV image seemed fuzzy. i hit the zoom button to see the setting and noticed that the settings were at 480 i when our TV is 1080i. Following the above instructions, I was able to reset the DVR to recognize our TV!
