I’ve had the VB repaired before, but the problem persists — I get loud hum and buzz from when it’s in my signal chain.

— I’ve tried various cables to no effect.
— The problem occurs in certain venues, not all. I’m playing small to mid-sized venues that have music every night, and doubt it’s their gear.
— I’ve swapped out mics, to no effect.
— The problem occurs even when all switches are lo gain/no phantom/ pedal bypassed. As soon as I put it back into my signal chain there’s noise.

I love the pedal, but it’s a severe problem to have an expensive bit of kit I can only use in certain places. Especially when I’m shaping my vocal sound around it.

Please advise.