| Do you have to switch bypass on to blow the fuse?
You can put the tubes out to check whether they're responsible, the amp won't be damaged when driven without tubes. You shouldn't do that if you have to open the amp and don't know what you're doing. As mentioned before there still might be HT.
If the fuse blows without tubes mounted, it's quite probable that some of the power supply capacitors are dead.
If there is more than changing tubes (should be no problem with an AC30 due to fixed bias), this should be handled by a store. |