I have just purchased a Rumble 500 Combo Amp a few days ago. I'm familiar with rumbles and I have had countless hours of use out of several to know that they are a must have for my style and playing. I decided to go all-out and get the big one and out of my excitement I plugged it in and sat down with a friend to see what it can do. I've used it for less than an hour, not even close to it's full potential, and it's died on me. Well I say died because now it won't go live. Power feeds into it because the ventilation fan still functions but the power light does not come on and I cannot produce any sound whatsoever. I'm wondering if anyone else is having this problem, if it can be fixed, or if I need to send it back to get it replaced. I spent $600 on this amp and I'm pretty upset that I already can't use it.