interesting problem, we havent ordered a service manual for this yet. the set came in with protect light on . we changed the stk350-130 that was bad. no longer goes into protection. but now it appears that the rear surround sound comes out of the main speaker jacks, and the main sound comes from the rear outputs. we have checked to see if the jacks had been switched, and all the obvious. anybody have suggestions other than, this unit was used for the sound system on the event horizon. Mike Wilson A.M. Stereo & Video Seattle WA. _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail ***************************************************************************** Submit A Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.html ***************************************************************************** For automatic password retrieval 24 hours a day, go to: http://www.tech-assist.org and select "Lost your Login Info?". *****************************************************************************