Seems they had 2 design probs with that one - uses 4 AAs and they made it such that there was a lot of pressure on the door I guess to insure good contact. The other was the placement of the shutter is such that any rubber band wrap or any other kind to secure batt door will run over the shutter and prevent its operation (keeps it tripped).

Made an external batt pack and hard wired it into camera body and velcroed the pac to the other side of the camera. Worked, but balance and grip was odd, made it harder to use and it looked like heck. Just needed a new body. Very poor design, Had the same thing happen to my wife's Nikon too, another batt door prob. The location of the shutter was moved on the her Nikon and its is still working with three hvy rubber bands across the batt compartment. Fell out of favor to a pink Kodak however.....

Canon's design uses a purpose built batt and a little internal catch to hold it, there is no pressure on the door and the catch the way its used has little pressure either. My last camera store camera was a Nikon FE SLR, everything since has been online from a store in NY.