[Valveoid]

Hi there - just found this website and being an analogue man who loves reel to reel tape recorders and valve amps I thought I'd join up.

I recently picked up an ancient Avo Mk1 Two panel valve tester in good condition, got the user manual and valve data and set it up to test an EL34 valve from my Selmer Treble and Bass amp. However on turning on instead of the needle moving slightly to the right and then having to re-set it to zero using the set zero control it shoots violently over to the right and I can't reset it to zero - anyone got any ideas? Thanks in advance...