In most cases, this is a result of the HDCP (copy protection). I would recommend that you call the cable/sat company and ask them to reset or refresh your box. In some cases, they may download an update that will solve the issue.
Keep me posted.
Hi, I've had my Samsung LN52A650 TV since February this year and lately (I'd say the last few weeks or so), the TV will randomly cut to black (but not turn off) and then come back with the information box in the upper left hand corner, or sometimes cut to black and then to a white snow static screen for several seconds before returning to what I was watching. The sound is still coming through, but the picture is just black or snow. It seems that it is only doing this while I am watching TV/DVR'd programs and not while playing video games. I'm connected via HDMI (I've tried changing out the cable, makes no difference) to a Verizon Fios DVR cable box. At first it would do it maybe once every few hours, but now it can happen anywhere from 5 minutes apart to half an hour apart, and it's very very irritating. Any help is appreciated!