AmpTalk.com

[salparadise]

hey there,

i'm having a problem with my Vox AC30, i hope you can help me out. thanks a lot.

first up, since quite a while the amp makes weird relatively loud noises when i adjust the "brilliance" volume. not all of the time though. its annoying, but oh well, i lived with it. then two or three months ago in the middle of playing, the fuse died.

i researched a bit and read somewhere on the net that it can happen quite a lot with that amp, cause the amount of current can get too high when turning the amp on. hm. they recommened a stronger fuse, but i got the same one again that was in there. well, changed the fuse, finished the last few recordings, didnt do anything until now.

well, i moved and was generally busy, never having the time to really try it out, and now for the first in a while i just turned on the amp again. tried to come up with a halfway decent sound, as it was sounding kinda thin sounding. as always, between fumbling around with various adjustments i turned off the "standby" switch, to not get the loud sound again. still, no luck with the sound, until i decided to just turn up the volume a bit. so yeah, i switched on the amp, and the fuse died again.

well, do i really need to buy a stronger one like recommened on the page i found? change the valves?

thanks so much for your help in advance,
sp.

[ChristianCM]

Hello Salparadise,

Did you solve your problem since your post ?

IMHO, a stronger fuse is not the solution.

Regards,

ChristianCM.

[arclight05]

rectifier tube replace it and also up the rating on the fuse from 2 amps to to 3 amps

[Insane Amp Freak]

I would have the rectifier and the power tubes checked. Sounds like one has an intemitant short. I dont advise raising the fuse amperage. If there is a problem by raising the fuse value you you will fry components.

Its alos a good idea to have the Bias Current Checked though these amps are cathode Biased they can be putting out too muchPlate Volts and eat tubes for lunch.