my semi integrated Matsui dishwasher will not open!?

The spring appears to have broken on on my MATSUI dishwasher(2009/10) I am unable to open the door, the flip back handle has gone floppy making it impossible to open the dishwasher. There are no screws on the case of the dishwasher. I cannot find a way into it. That part of the dishwasher will not pop off to allow me access to the lock. How do I get in to fix it. Otherwise the dishwasher still works, it just the lock that doesn't! thank you.