Originally posted by Just1MoreDave First, I would try to figure out if lifting the rewind knob is moving the latch. If the latch isn't moving, that is a difficult problem.
You can remove the bottom plate easily, just three screws. That at least allows you access to the bottom edge of the door, and a place to pry without cosmetic damage. On the MX I have in front of me, you can then see two screws holding the socket for the bottom hinge pin. Unfortunately, you can't get to the top hinge pin socket without removing the top plate, which is not too hard on the ME Super but still something I'd avoid.
In the case of just needing to get a little more leverage on the back to pop it open, if there is no film in the camera you can take off the lens and open up the shutter on "B" (for those that have it), and use something to nudge against the pressure plate on the inside of the back. Have to be careful to use something that isn't going to scratch or mar the pressure plate, though. I wouldn't
want to try this method, but it is an option. Also have to be very careful not to let the shutter go while you have something poked through there.