I have a Polk PSWI 225 which normally works great but lately is not coming on as often as before. When watching movies with strong bass, it comes on and stays on. But when watching TV, it is often not coming on at all or going off pretty quickly. It never did this before. Makes me wonder if it needs cleaning or something similar. I did try turning both the wireless transmitter and subwoofer on and off to reconnect but no change.
Thanks for any help.