Are HDMI cables affected by RFI, from an A/C power cord or power conditioning device for example?
My DVD player is set directly on top of a Panamax M5300-PM power manager. The HDMI cable extends down to the AVR on a separate shelf under the Panamax. I've experimented and notice when I flip the light switches in the apartment the picture on the TV goes blank for about a second or less. This phenomenon does not happen while watching on a separate blu-ray player located further away on a different shelf. My next move of course will be to move the DVD player.