Hello, I have just got a new LG RZ-37LZ55 TV with a LH-T550TB DVD/CD receiver and home cinema speakers. The speakers go into the back of the DVD player but only work when playing a DVD and not normal TV (cable). I have changed the format to TV/Audio on the DVD player but it doesnt help. On my old Sony tv the speakers can plug directly into the TV but not with this TV. So basically, how can i get it to work playing cable as well as when i play DVDs??? Thanks