Candy 650 dishwasher.....opened door and loud cracking sound, door now very heavy. Think door spring snapped, how do i get to it and where do i get spares from?

I don't know how to fix the door exactly but I do know of a site that sells all types of designs to recover your dishwasher and fridge. They even have stainless steel.
www.applianceart.com

The door springs are attached to the bottom of each side of the door. You have to pull the dishwasher out far enough to see the area or all the way out if you have sides on yours. It hooks on the door and another hook on the washer frame.
Post your model number HERE to find a diagram and parts.