SVT users...does your fan come on when you power up in standy by or does it wait until your amp has reached a certain temp before kicking in? My svt had both bias lights on and a loud fan that starts right when I first hit power in standy by. I've adjusted the bias and it's all greens now with red when I play but the fan still starts right away. Ampeg says it's hooked to a temp circuit and shouldn't come on until a certtain temp which implies my tubes are being overheated though now my bias lights do not show that anything is amiss? I'd like to know what real users experience.