I came across a deal on a Bass 400+. $850 in the Mesa road rack. I asked the history of the amp and the guy said cosmetically it is in excellent condition, but it has been in and out of the repair shop a couple times. The issue with it is that it has been blowing a fuse every time a new one is put in and the amp is powered on. I can remember reading problems like this with old Sunn amps...something about capacitors and filter caps. The guy says that the amp works fine now, it was plugged in not too long ago. I guess what I am asking is: is this an easy and reliable fix? The amp would have to be shipped to me and I would have something like 30 days to try is out before returning it so I would just run it pretty hard for a few days and see if it holds up. What do you guys think? By the way the repairs were made in August of 2004. I can't remember if he said that the amp was used or if they had problems with it out of the box.