Hi, I have just got a Philips 9618 28" TV wtih DD5.1. The surround speakers are cordless but have interference no matter where I put the receiver box. I tried connecting directly using 2xphono to 3.5mm jack. (Actually wasn't long enough so connected to a 2xphono sockets to 2xphono ext cable). Works fine but when I turn the telly off it hums loudly. No heres the stupid question! The manual states I should use a cinch to 3.5mm jack cable, is this different to 2 x phono's or not? Any idea's on the humming before I phone philips and complain? Any help appreciated.