Hey. So my 70's Ampeg V4 w/Reverb isn't making any sound. I powered it up and the amp turns on, tubes light up, but no sound when I take it off standby. Now I have a feeling the unusually cold weather might have something to do with this, as the amp was stored in my cold basement. We've been having single digit and negative temperatures for many days. I put my amp in a warm room hoping this will work. Gonna let it sit for a while. Anyone's amp ever not work when it's too cold?