I had a Verizon technician over to install FIOS. He ran into a problem getting the HD-DVR to work on my 4-year old Samsung 61" DLP. Using Component cables, he could get the HD channels to work, but not the non-HD channels, the video wouldn't display at all. He had the same problem on two different units tested. He could only get the non-HD channels working by changing the setting on the set top box to 480. A non DVR set top box worked fine.
I previously had a Comcast HD-DVR hooked up to this TV with no problems. I do not have a HDMI connection, so component seems to be the only acceptable choice.
We tried every setting on both the TV and set top box for three hours with no luck. I can't seem to find this issue discussed anywhere.
If anyone knows what could cause this and better yet, if there is a solution to try, that would be great.