Somethings wrong with my Onkyo 606..need advice

[Genocide316]

My center channel output is all wonky. Just recently it stopped outputting normal sound out of the center speaker for Cable TV (have to turn it up to almost max to hear the slightest noise). Turned on my PS3 and I get no sound (or very little if I almost max out the volume) by listening to game music but I pop in a Blu-Ray and it works no problem. I'm stumped....I really don't want to have to buy a new receiver Any help is much appreciated. If you want me to explain any other aspects of the setup just ask.