Anyone out there know why my preset channel inputs for mic and acoustic guitar just stopped working or working occasionly.Please help.
Tom.

Hello Tom,

I'm not sure which particular system you have, but in general you can try to reset it by unplugging the power and leaving it off for a minute, then plugging it back in.

Besides that, you can give us a call at (877) 335-2673 when you are with the system, and we can assist you over the phone.

Thanks for posting,