Last night I did a small gig and took my SWR Workingmans 10 and the 1x10 extension cabinet. This is the second time that I used this amp to play out and the first time that I used it with the extension cabinet. I did a 40 minute set, without a hitch and this set was sounding oh so sweet! I turned it off for about an hour and started the second set. I was using a EBS Bass IQ, and laying down a funky line when my sound disappears. Huh! I look over at the amp and the red led is off, I'm thinking, "Maybe the power went out or something?". Checked the power connection, good. Checked the fuse, not blown. All I get out of this baby is a hum for about a minute and it shuts off. Anyone familiar with this???