Been a while since I last saw season 2, but I thought things only got screwy after 0. The only thing that happened between 60 seconds and 0 was the Alarm getting louder.
It's going to depend on when I get more into those episodes. But I recall later one when the timer gets down under one minute all hell starts to break loose, mostly with metal pieced flying around and a ramping-upp humming/electrical sound.
After it gets to 0 the timer shows the hieroglyphs (we'll never know the answers too) and things get more and more turbulant until it imexplodes.