On some channels, the 16:9 channel fills the whole screen (which I want) on othrs, same resolution has grey bars on both sides!! Hate it.

You're projector is most likely fine. Check your satellite box. Go to the menu and see how its set to display video. It may be trying to up-convert TV signals. Try different adjustments from there to see if you see any change.

That's because your aspect ratio is 4:3. To get the picture to fill the whole screen change the aspect ratio to 16:9. You can do this by pressing the aspect button on the remote (right above the channel + button) and changing it to different sizes such as cinema, panorama, and full. Try all the options and see which one like best.

There are a few picture sizes out there 4:3, 16:9, as well as some for movie screens. New televisions are 16:9 and when you are watching a true HD program, it will fill the screen perfectly. However the program may be broadcast in one of the other formats. This results in the bars on top/ bottom or on the sides. This is true for commercials too. If the commercial is or isn't in HD will determine if there are bars or not. All this is normal operation.

Programs that are recorded in 16:9 format appear full screen on a 16:9 TV. A program recorded in a standard 4:3 format will either be stretched to fit the screen or have side bars to fill the screen area. In the case of HD channels, the black side bars are part of the picture which is being broadcasted.

A broadcaster will transmit an HD channel in 1 format. This may be 720p or 1080i, both of which are HDTV formats. HDTV formats have an aspect ratio of 16:9. SDTV or standard definition broadcast have an aspect ratio of 4:3. Because not all content is record in an HD format (ex: Judy Judy), the broadcast is faced with 2 options. #1, stretch the 4:3 picture do that it fills the 16:9 canvas. #2, simple place black side bars on each side of the 4:3 image. What you are seeing is the latter of the 2 options. You will notice a change during the evening programming. The bars are only there when the content is not HD. You can use the WIDE feature of your TV to stretch the picture so that it fills the screen, just like broadcaster option #1 above.

It's bad.

You can change aspect ratio by remote. I hope it will be solve

you should have an aspect button, but go into your setting or options screen and adjust the resolution or aspect

When your watching non HD channels you have to stretch your screen.Your TV has that input option to do so.

Problem is solved. I unplugged my DVR from my receiver for about a minute, reconnected it, and the that solved the problem.