I've owned my M13 for 2 years now and I absolutely love it.. My favorite multi-fx unit by far. I've never had any problems with it (besides replacing the power adapter 1 week ago) until yesterday. I went to band practice and rigged my M13 up like usual and turned it on and everything was acting normal as usual but when I plugged my guitar and started playing the weirdest things started happen.. 1.) The M13 doesn't give me any fx at all ! If I turned on the delay = no delay.. If I turned the distortion = no distortion.. If I turned on the chorus = no chorus. You get the point... Whatever FX I put on the M13 would just give me a clean signal.. The FX shows up on the LCD screens like usual and M13 showes them like they are ON but I only get a clean signal. The M13 looks like it's working just right but it doesn't produce any effects at all. 2.) Every time I change effects my signal dropps out for about 1 second and these terrible clicks and pops follow when the signal gets back in.. And when the signal comes back in it's always a clean signal. It never adds the effects I turn on to the signal. I've tried 3 different guitars, 3 different amps, 6 different jack cables, 2 brand new Line 6 power adapters and the unit in 3 different houses but the it's always the same. I only get clean signal from it, no effects whatsoever. I always connect my amp to the mono output on the M13 and then from the mono M13 input to my guitar. I had the 2.04 firmware installed when this happened and I did a factory reset hoping it would fix the problem but it didn't. I've already sent the unit for repairs to the guy here in Iceland that's working for the company that sells Line 6 products but he already told me that he doesn't believe he can fix this.. He said it must have something to do with the digital part inside (the computer) and he isn't able to fix that. So what should I do ? Can you guys think of any solutions or fixes for this problem ? - Fannar