Hi there, I have a set of KEF egg speakers along with the PSW 2000 subwoofer. The other day I noticed that the sub appears to have broken. The power light is on, but it is not outputting anything, not a rumble. I am no expert so I have no clue what could be wrong, but it no longer makes a little "click" when it's powered on, which I guess is pretty important. Does anyone have any idea what might be wrong with it, and would it be possible to fix without sending it away? Thank you!