I have simple setup. HD receiver (Scientific Atlanta 4250HD) hooked up to my HDTV (Sony KDL-46V5100) using a 6-feet HDMI cable from monoprice.
Here's my problem. In HD channels, I see very annoying image flickers. They happen at various rate (from every 30 second to every 5 minutes). I noticed they are more frequent in fast action scene (ex: hockey, football games). I saw two types of flickering:
1. The whole image seems to freeze for a few milliseconds, then resume.
2. Only a small part of the image gets distorted or change color. It's mostly a rectangular region that changes to black or white.
I already tried with another HDMI cable more expensive than the monoprice cable (not a monster cable tough) with no significant changes. I also tried all 4 HDMI input ports of my TV with no success. I called the cable company (videotron) many times. They boosted the signal level so the debug pages on the receiver displays acceptable signal level. They also replaced the receiver with another one. With the component cables, the flicker does not happen.
Could my replaced receiver was still defective? Could it be my TV that has a problem with HDMI? Have you experienced this problem? Is there any other tests I could try?
Thank you very much in advance for your help!