I am experiencing very poor audio from HDMI sources through my Pioneer VSX-920. Audio through iPod and CD player remain excellent. Audio problem is most pronounced on ABC programing (all broadcasters set up there sound differently) making ABC un-listenable. Audio problems also occur on other programing sources (HBO, other networks) through the DirecTV receiver, and also the Blu-Ray player. The common denominator would seem to be HDMI processing in the Pioneer receiver. If so, I'll likely take this as a clue that I should move back up to a better brand (NAD, Marantz, or at least Denon). My advice to you is that the Pioneer is probably not worth the time/money for a repair. Maybe if you're still under warranty you could hang in there.