my "off" switch seems to be stuck and can't move it to "on"? I tried using a flat head screwdriver to move it but it hardly budge. The high-sync switch above it works fine.
it happened the other day during a shoot i did at a concert but it was only stuck at "off" for few secs and i managed to switch it to "on" no problem.
any 420ex users ever had this problem? what can i do?