Hi!
I have an M13 that's doing wonders. Great unit!

Last Sunday, I used it and

upon powering, everything seems normal but I can't get any sound off it.

My route is:

Guitar > M13 Input L > M13 Loop out L > Preamp in > Preamp Out > M13 Loop In L > Mono Out L > P.A.

I tried guitar to PA: OK

Guitar to preamp to PA: OK

I decided not to use it cause it stayed the same even after a few restarts.

This morning I  searched through the forum and found some suggestions for troubleshooting this kind of issue.

The only way I can get sound is by True bypass and all effects turned off.

Second setup: M13 Loop Send > Amp

     Pre-all: OK, Dry (No FX working)

     Post FX1, FX2: DRY

     Post FX3, Post ALL: OK (FX working)

     Loop OFF: No Sound

I even re-Flashed it using v.2.01 and issue is still present.

I only power it both at home/outside with Furman conditioner.

There is nothing I changed before it went bad a few hours earlier except transport it. Never dropped it at all.

How long does it take before I can get it back if I send it to service ctr? I need it by Sat. pls help!

Bought at GC Pasadena, Oct2009.

Thanks in advance!