Related issue, I think ...
I recently bought a broken s-302 (completely dead), hoping I could repair it. I have secured and searched the service manual, phoned Denon, phoned the authorized repair facility, and still don't really know the following, which I'm hoping someone can help with:
Starting with all cords disconnected, when the subwoofer power cord is plugged in, the red "protection" light on the back of the subwoofer turns on and stays on (very bright). Does this mean there is a problem with the subwoofer / power supply? I had hoped that this would isolate the problem to the subwoofer, but the Denon shop guy said not necessarily.
When the system connector cable and the S-302 receiver are then plugged in, the red light goes out. The receiver then shows no signs of life at all.
Does the red light give any clues as to whether the problem is in the subwoofer or in the receiver? What is the light supposed to do if there are no problems? The manual says it will flash if it overheats, but says nothing about staying on or staying off.
If someone has a working system, can you tell me whether the red light is on when everything (except power) is disconnected, and then if it is on when the S-302 is connected?
Does the Protection light ever turn green? (The Denon guy said it would, but nothing else I have seen says it does)