Canon AT-1 (Similar AE-1) Shutter Fires Upon Advancing Film Lever
This is an intermittent problem, happens once very ten times film is advanced. I'm testing the camera empty with new battery. I have read something about the shutter magnets possibly being the cause. Can I get more details, a procedure? Is there pictures/schematics of the area needing fixing out there that may help? Anything else to clean when I have it open? THANKS!
No need to look at the schematics. It only will give you a little headache. Replace Shutter release magnet (MG#3). While winding stage the Mg#3 suppose to catch the lever and any dirt or particle may prevent it. Clean it and it shoud take care of the problem. Good Luck -James. For further assistance email, go to www.camerarepairjapan.com
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Could be that when the load builds up there is friction to jam the film. You must not take chance with the shot film and so try to click with the cap on the rewound portion and if the film is not advancing then it is possible that the camera must be checked with a dummy film to confirm on why the jamming takes place.It can be also due to failure of the loading mechanism
A Canon AE-1 is not an EOS camera the Canon "A" series is manual focus while EOS is auto focus. First thought In answer to the advance lever stuck or jammed I'm going to assume the camera is in serviceable condition and has not been subjected to water damage or harsh use. If we are dealing with just the advance lever then I'd say that you have over advanced the film at the last frame. I've done this myself after loading a 24 exposure and thinking I had a 36 exposure film. At the bottom of the camera there is a little pin which releases the advance lever and allows the user to rewind the film. Under normal conditions when it's time to rewind the film into the canister this pin offers little resistance to pushing in to release, however depending on how much force the advance lever has been subjected to increases the tension on this pin. Push the pin in and rewind the film. Second thought is if you have film in the camera and it has not been used fully then it's possible that the film has already been advanced to a new frame and the shutter needs to be activated before the lever will become free and advance to the next frame. Other problems with the Canon "A" series cameras is they have a tendency to dry out the lubrication and begin to squeak when the shutter is fired. This condition can eventually result is a shutter seizure and give the same advance lever condition. Those are the three things that come to mind over this lever problem lets hope it's just run out of film.
The film is either at the end or stuck. The shutter will not release unless the film advance lever has gone all the way and back. Make a note of the frame counter. Rewind the film and remove it from the camera (When you feel the film to come loose from the receiving spool, stop rewinding to prevent the end of the film to disappear inside the can. This way you can reload it if it was stuck in the middle.) If the film was completely exposed, take it to be developed. With the empty camera, try to advance the lever and release the shutter. If this works, the problem was the film and not the camera. Everything is fine. If the problem persists, take it to be repaired. If the film was stuck in the middle, load it again into the camera. With the lense cap on (preferably in a dark room or similar) 'shoot' as many 'empty' frames as you had on the counter plus two more. Finish the film and develop the pictures. If the film stucks again at the same place, rewind it and develop normally. It was a bad film. Hope this helped you to solve the problem.
This is not the best solution as it indicates a faulty film back. The film should advance without resorting to activating the film-wind release lever. That is only for intentionally advancing a partially exposed roll of film. Make sure the multi-exposure lever is not engaged and that the counter does advance and the red mark disappears as you advance to an unexposed frame.
It likely did not catch when it was first loaded, and as such never advanced through the camera. Open the back of the camera, with no film in it, then set the shutter speed to 1, advance the film advance lever and take a shot. You should see the shutter curtains open and then close a second later. Then advance the film lever again and watch to see that the sprockets are turning. If they are, then the camera is exposing and the mechanics are working properly to advance the film. Chances are it was just loaded incorrectly.
In most film cameras, a battery is not necessary to manual advance film
using the lever. Your Canon AV-1 is no exception. I have owned two
cameras from the same group, the AE-1 and the Canon A-1. Neither
required a battery for manual film advance.
Make sure the ring around the shutter release button is set to "A",
otherwise the shutter won't release and the film lever won't work
correctly. If the ring shows an "L", the shutter release is locked.
Here's a graphic of the batteries that can be used in your AV-1:
The magnets that control the shutter are the likely suspect. Dirt and debris can cause them not to hold properly. Hence, it fires the shutter when you advance the film. It is something you can repair yourself. I can describe the procedure if you are interested.