I'm hoping someone can help me with this. I have surround sound speakers and have not had any trouble with this system until I switched to digital HDTV cable. During test mode sound is output from all four speakers, but I cannot get sound from the rear speakers during playback and cannot get digital sound from any source, although everything is set to digital. I tried moving the surround speaker wires and when I hooked them to the speaker outlets for front speakers could hear them in regular playback, but not in the testing mode. Also, the volume does not seem as loud as it should be. This is probably something simple, but I'm recently widowed and my husband was the gadget person. Thanks for any suggestions.