Last night I noticed while watching Kingdom Hospital on HD that my Front Right speaker was not playing any audio and my Left speaker was...... The test tones from my receiver worked....Other channels and sources had audio.... I think the source was Dolby Digital or Dolby Pro Logic.... I flipped thru other channels and it happened again on the "Mexican channel"........No audio to the front right....I can hear the speaker is on, but no source audio gets thru..... It was late so no time to switch left and right speakers....I may do that tonight.... Do you think it's a speaker or receiver problem?