Try switching your surround speakers. Put the one that works on the bad side and see if works. If it does, then it sounds like you have a problem with the speaker.

To check if it's the ICBM, reverse the surround channels on the unit. You already said one side works. If you switch it, it will show if the other side will work while driving the other side.

Good Luck!

[This message has been edited by Jason J (edited January 14, 2003).]