hello,

I've just bought m13 and I can't get any out signal.

When it's true-bypassed with all the fxs turned off, I get sound (I guess I put the cables in the right place?)

but when I turn on fxs or all the fxs turned off in dsp-bypassed, I get no sound. Even tuner won't get any signal in both bypass mode.

things I tried:

firmware upgrade,

factory reset,

tried guitar jack into L and R , also tried both output L R

checked cables 

checked guitar direct into the amp.

I guess my only option is to bring it in to the customer service

but it's pretty far and I'm lazy.

Any other suggestions I could try before sending it in?

Thanks