My beloved Minolta a-7/Maxxum 7/Dynax 7 has been working great for a while. The last three times I’ve used it, however, when the film roll was finished, I’d hear a whirring sound that didn’t really sound like my film was being rolled back into its canister… and then the rear screen goes blank. The batteries are fine, so this is an odd situation indeed. The first time this happened, I managed to open the rear of the a-7 using a hack (without damaging anything). I thought this was a one-off. That said, I replaced the battery, but it happened 2 more subsequent times. I had to use a dark tent/film changing bag to open up the back of the Minolta a-7 to retrieve the film and rewind the film into the canister by hand, which is not fun. I suppose the clutch for the rewind system isn’t working properly/has old lubricant that doesn’t allow the film rewind clutch to catch, but of course I’m not sure.
Do any of you guys know how I can possibly fix this (outside of buying another a-7 (or even an a-9))? Preferably by myself?
Any help on this would be very greatly appreciated.
Do any of you guys know how I can possibly fix this (outside of buying another a-7 (or even an a-9))? Preferably by myself?

Any help on this would be very greatly appreciated.

