I'm on the road for work, but my wife called last night and told me a brand new EP800 was delivered! The entire speaker, not just an amp. I won't be able to move it down to the basement and hook it up until next weekend.
As far as what the problem was, they won't know until I ship the fried one back. I'll be shipping my blown one back next weekend in the box they used to ship me my new one. I can't believe I got the new one so quickly!