I posted a thread about a blown tube earlier, but this thread is about my situation as a whole. I won an ebay auction for an Aguilar DB 359. The amp sold for $930, which I thought was a pretty good deal. Even thought the amp was described as being in excellent condition, I got the amp the other day with some scratches and a bent faceplate. It looks like the amp was racked without any support underneath and the faceplate bent under the strain of the weight of this amp. So I was able to fix the front and the scratches, tho annoying, aren't really that big of a deal. I'm going to put it in a rack case anyway. Another thing that I didn't care for is the seller shipped the amp with the tubes still on as opposed to removing them for shipping. I think that's why the tube may have blown from all the jostling around, if that is what actually happened. The thing that bugs me is that the amp was far from being in excellent condition. Anyway, I pulled the amp apart and fixed the faceplate, cleaned out some bits of dust and whatnot. I put it back together and plugged in and like the "blown tube" thread states, sound stops, power goes out and one tube seems like it has blown. It did power up and I did play it before I fixed the face plate. I emailed Aguilar about it and am awaiting a response from them. The powertubes are original and I had planned on replacing them eventually, but it's looking like they'll need to be replaced now, if that is the only thing wrong with the amp. The problem is, how do I know if the amp is physically OK without dropping more money to get it checked out? So my question is, should I see this as an omen of a previous owner that didn't really take care of this amp? I'd hate to end up dropping another $500 on this, but on the other hand, what if it was just dumb luck? I've wanted this amp for a while now. BTW, the seller said he'd refund my money. What would you do?