I bought a used amp and the seller included the full compliment of tubes. I didn't notice that the rectifier tube JJ 5U4GB has the guide pin broken off. So it's possible I inserted the tube incorrectly, wrong pins in the wrong holes. When I powered it on, the jewel light came on, then a second or two later it all went dead. The fuse is blown, and the amp won't power on again without a new fuse. Could inserting the rectifier incorrectly cause the fuse to blow? And would it ruin the tube?