Hi guys, my Vox VT100 (Valvetronix) has recently started giving problems 
What happens is when playing the volume would suddenly decrease noticeably at random intervals, and then when turning the amp up to counter it, the volume would come back leaving the amp overly loud. I also noticed the amp is (sometimes) a lot softer than it was - sometimes even not cutting through at band practice.
I'm guessing its a solder on the circuit board or something? I'm clueless when it comes to this. When googling they suggest cleaning the effects loop jacks etc. and I did with no success.
Any idea whats wrong?
I live in Welkom (150k from Bloemfontein) and seriously need to take the amp in for repair, as we gig almost every week now with 2 gigs in a weeks time.
Where can I take it and know the people will know what they're doing?
Thanks for the help! :?

What happens is when playing the volume would suddenly decrease noticeably at random intervals, and then when turning the amp up to counter it, the volume would come back leaving the amp overly loud. I also noticed the amp is (sometimes) a lot softer than it was - sometimes even not cutting through at band practice.
I'm guessing its a solder on the circuit board or something? I'm clueless when it comes to this. When googling they suggest cleaning the effects loop jacks etc. and I did with no success.
Any idea whats wrong?
I live in Welkom (150k from Bloemfontein) and seriously need to take the amp in for repair, as we gig almost every week now with 2 gigs in a weeks time.
Where can I take it and know the people will know what they're doing?
Thanks for the help! :?