Whenever I play a film's DTS track, the sound will only come from the surround speakers, not the television speakers. I used to be able to adjust both but now I can't which is problematic when movies switch from dialogue to explosions. I just upgraded to a Yamaha HTR-5640 figuring this was a receiver problem (and for other reasons) but the problem remains. I have a Sony DVP-NS300 DVD player and a POS JVC TV. Did I connect something wrong? Is this a player problem or a TV problem?