Vox AC30 question (no power)

[voodoomailman]

Hello... I have a 1997 Vox AC30/6 TB with bluebacks and upgraded Mercury Magnetics transformers. I haven't had the amp very long and today I turned it on and after about a minute it lost power. I tried a different power cord so that's not the issue... and it's not the outlet or anything super obvious like that. Could someone please take a moment to help tell a clueless musician what to do in this situation? I'm hoping it's something relatively simple like a blown fuse or something... but I've never taken apart an amp before and don't even know where to start.

ANY advice would be majorly appreciated!!!!

Thanks in advance!!!

[drewl]

Most likely a bad rectifier tube which blew the mains fuse.
The standby circuit puts alot of strain on the rectifier tube (bad design) and since the GZ34 warms up slowly, the standby isn't needed anyway, I removed mine and put a master volume in it's place.

anyway, pull the fuse out, replace if blown, pull recitifier tube, power up.
if it stays powered up, replace rectifier and power up. if power goes out try new rectifier tube.
repeat.

[voodoomailman]

Thanks for responding! Is the best way to get at the tubes by taking off the front panel? I've never changed tubes before... I'm sure I could find some tutorials but would you have any first person pointers?