You have probably figured out by now, but just in case you haven't...
I had the same problem and scratched my head for ages trying to figure out how to get to the hinge to replace one of the springs on a DW 927. I guess your machine will have a very similar design. The solution is blindingly obvious and takes two minutes to fix! Lay the appliance on it's side or back and you can access the hinge springs through the bottom of the unit. Remember to disconnect the power first though!!
I hope this helps.
MC
December 2008