Hi everybody, I’m dying for a solution to this before I throw this amp out in the street. I recently had new tubes installed, along with all new upgraded screen resistors. Now when I let it warm up and take it off standby the power light turns green, the bias lights are both green, but I get absolutely no sound. Not even noise when I turn the gain and master up. I’ve tried different speaker cables, a different bass, I even put my old set of tubes back in and the same thing...no sound. If anyone can help I’d appreciate it.