Rogers customers seeing artifacts on PBS HD Buffalo too
With ATSC an amp won't cause any visual effects up to the overload point, at which the receiver just blanks on that channel. Also if it is the HDMI/DVI cable it would affect all channels, I believe.
Would this be some sort of artifact problem caused at PBS's end? Just wondering if there is some sort of problem in that area.
Here's a thread about Rogers customers seeing compression artifacts on PBS HD: