Quote Originally Posted by shaft View Post
....It must have been static that caused the short as it was switched off via the on/off switch at the rear, I touched the metal casing behind the led display board with the metal of the hdd caddy - Lots of sparks and a tripped fuse box....
The On/Off switch of the ET's switches only one lead. So if the plug was still in the outlet, you have 50% chance that the box was still under tension.
Always pull the plug on opening devices. And switch it on to de-charge capacitors.