Some are that way to thwart us do-it-yourself fixers.
Try Sears for the screw driver.   If not get a thicker dremel cutting disk and cut straight slot in the screw head.  Then a regular flat screwdriver should work.  This is how I got my Black and Decker Iron open.   My problem seems to be a circuit board problem.
                
 Ed Danyleiko
                
 December 2007