Behringer ACX1800 buzz from right speaker

[donnmon]

I've been using this amp for small gigs and its worked fine and quiet until now. I have a buzz(hum) coming out of the right speaker on this two speaker amp...

[neither19]

Help!
I am having an issue with my Behringer amp. It won't power on, just get a random flash on the power indicator light and then it goes dead. I...