Chosen Solution
I just picked up my camera after 2 weeks of not using it. I cranked the lever to take a picture and it fired automatically. Also, the light meter/on switch was off. I tried a couple more times and it kept firing automatically at the end of the crank. I am living abroad right now with limited film and no known resources for film camera repair. Please help!
The Canon AE-1 uses a combo magnet/electromagnet to hold the shutter in the charged position. This magnet is deactivated by a small electrical charge (electromagnet) which creates a canceling effect on the magnet causing it to let loose the bar which then allows the shutter to fire. If something is in-between the magnet and the bar it can prevent the magnet from holding the bar causing it to release after you have wound the shutter charging/film advancement lever. If you are careful you could try accessing via the bottom cover the shutter magnet/electromagnet and with a moistened strip of paper with reagent quality Isopropyl alcohol 85% or better, wipe the surfaces. If the magnet still won’t hold you will need a new unit which will require getting to a camera repair shop. Look online here: Canon
There is a magnet that grabs hold of a small metal piece when you $!^& it. You an easily see it when you open the bottom. Remove the plastic gaurd by pulling it away from the copper. $!^& the lever and when it releases hold the metalic piece to the magnet to try to remagnetize it. Worked for me.
It could also be the battery.
