i upgraded hookup wire in both my VTA dynaco mark 3, one works just fine while the others both driver tubes dont light up and i get no sound. power tubes and 5ar4 rectifier lights up. no smoke or sparks, fuse is fine. what should i look at to try to figure it out. i have resoldered all the connections and still problem persists. any advise would be welcome. I understand this is is not ideal way to diagnose an amp, i welcome your input.
Last edited by gruvlad on Sun Jun 19, 2016 9:57 pm; edited 1 time in total