Just purchased the PSW10 and have added to my system. I've found that the auto on/off toggle switch doesn't seem to function properly. When left in the center position, auto, the indicator light remains green after the receiver is turned off. If I switch to "on" and then back to "auto" it goes red. Would any shortening of life occur if I left the sub on 24/7? as it is a hassle to turn it on and off each time we use the system.