1. Your HDMI port on the ViP622 is bad (or isn't compatible with your TV)
2. You aren't in an HD mode
Could you give us something a little more substantial than "I cant get it to work"?
Useful details include:
1. Have you read the ViP622 manual?
2. After reading the instructions, did you enable an HD mode?
3. What kind of TV do you have?
For future reference, questions that are specific to a receiver should be asked in the corresponding support forum. In this case, this question should have been posted in the "ViP622 DVR Support Forum".
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