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Message |
    
Chris_23
Tinkerer
Username: Chris_23
Post Number: 1
Registered: 02-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, February 27, 2009 - 02:54 am: | 
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Hi, I am new to this forum and have a question that I would appreciate any help with.
I recently acquired a Canon AE-1 and for a while everything worked fine. Then the meter seen in the viewfinder started registering 'underexposed' for most shutter settings etc. The only asa/shutter settings that it seems to work for are very fast film speeds and slow shutter speeds i.e 3200 and the camera's B shutter speed setting. Anything below 1600 asa setting and a 1 second shutter speed setting and the needle does not rise above the lowest position regardless of the external lighting.
Is this likely to be the well documented tungsten wire problem and if so is this relatively easy to fix?
As I purchased the camera for next to nothing I am willing to open it up and attempt to fix the problem myself!
Thanks,
Chris |
Rick_oleson
Tinkerer
Username: Rick_oleson
Post Number: 817
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, February 27, 2009 - 04:30 am: |
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No idea here - I suppose the cable could have let go, I've never encountered that myself so I'm not sure what the symptoms look like. I do have some disassembly sketches that I can email to you if you like. |
Bossman
Tinkerer
Username: Bossman
Post Number: 16
Registered: 02-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, February 28, 2009 - 11:45 pm: |
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It IS probably the cable that runs from the speed mech. over to the spring loaded resistance wheel under the rewind mech. area. Unless you have a replacement cable, there's no point in disassembly of top. If it's not the cable, the cable can break if top is removed by novice. I have those cables. www.flcamerarepair.com |
Ethostech
Tinkerer
Username: Ethostech
Post Number: 109
Registered: 07-2006
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 07, 2009 - 01:23 am: |
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With respect - I suggest that if the cable were the problem then changing the ASA setting would have no effect whatever. The described fault phenomenon is very common in the AE-1. I have two such samples with this identical malfunction and which I have meticulously sleuthed over more hours than I care to admit. In the end it all came down to faulty IC's. The AE-1 really is an electronics nightmare - IMHO. The Bossman post re a gentle procedural let-down of the cable tension during removal the top-plate is also a dire warning to be heeded. |
