I have a Vox AC30CC that I just bought. It is used. It is a 2006. I have only had it for 3 days and it just started cutting out some. It happened after playing for about 20 minutes. I opened it up and wiggled all the tubes to make sure nothing was loose. While looking around, I saw that the top of the EL34s were a little brown on top. They are Electro Harmonix and the pre's are Sovteks.
I do not know a whole lot as I have never had an amp with problems (gladly).
Also, I noticed on the bottom of the tube sockets are a little brown or rusted looking. Nothing bad at all though.
Any suggestions on what the problem could be?
Do I just need to replace some tubes? And if so, which ones?
Or do you think it is a speaker connection? And when you say they sometimes have bad connections you mean the soldering right onto the actual speakers, correct?
Thank you soooooo much!