problems with Videotron & Sony 52xbr4
I have Videotron Explorer 8300HD with a Sony 52XBR4 LCD. My problem is that when a show is broadcast on both US channel (ABC, CBS, or NBC) and Global or CTV, then the US channel picture will intermitantly go on and off (sound remains on). Sometimes this happens on the US Channels even when there is no simulcast on Cdn channel. This seems to happen when broadcast is in 720. Another problem is when switching from a 1080 broadcast to a 720 broadcast, the screen will go to "white noise". I need to switch from TV to DVD and back to re-set.
Is this a problem with Videotron or the TV?