I would check and see where it was made. The Fender amp I had replaced was made in Indonesia and is a mass produced product. What that means is that they're cheap to manufacture and cheap to replace when one does fail. What that means for us is that the quality controls aren't up to par on a good many of them. Fender, Crate, Ampeg etc still make their high end ones here I'm pretty sure and they undergo better checks from what I understand (have a friend who runs a repair shop). So if its high end, I wouldn't worry about it, if its a mass produced amp, you might end up with a large paper weight.
Case in point, I had a Crate that worked for about a year before it needed to be fixed (a 50 mile round trip to their repair guy who operated out of his garage). The tech failed to fix it so it went back (another 50 mile round trip) and when it failed again, they replaced it with an Ampeg BA115 which I was told was an "upgrade." Couple of months, the output FETs blew. I decided the amp wasn't worth fixing since I only paid about $250 for the Crate and had already put so much hassle into it. I took the loss and I'm working to fix the ampeg as a learning experience. Having opened that amp now and worked with the board, it is pretty shoddy work so I'm not surprised that it doesn't work.