surround sound not in rear speakers with receiver
I'm using 3/2.1 setup with my Sony receiver (STR-DH820). As normal, voice comes out the center and surround out the left/right front, sub is good too. When I watch / record HD (5.1 Dolby) shows, nothing comes out the rear. When I tone test the receiver system, sounds come out of all speakers at a good volume. The receiver display says it is getting 5.1 from the Motorola VIP1225. One thread suggesting upgrading to ISB75STB box.
After posting this, I tested the speakers and they are weak, will replace and report back.