Yashica Electro 35 GSN shutter doesn't close in AUTO mode

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Aug 7, 2013
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Hi!

I've got a Yashica Electro 35 GSN and I think that something is wrong with it. Since a few days, I've got a problem with AUTO mode. Using 16 and 11 aperture ring the shutter doesn't close until I press the trigger button for a second time. With bigger aperture values it always works OK.


I've tested it in B mode and Flash mode and it also works OK. Even, I removed the battery and the camera (works permanently at 1/500) and it's OK with all aperture ring values (even 16 and 11).


Anybody knows which could be the problem? Is it possible to repair? It could be the battery? I think that it's old because is the original, from the 80's but I'm not sure that Auto mode uses the battery.


I pressed the battery check button and it shows the white light on counter. Also the exposure lights (orange and red) works correctly.




Thank you very much!
 
It might be the sliding contacts inside the lens housing have oxidized.


I know my GSN does weird things at f/16 in very low light on Automatic.
 
I have tried several of these cameras and had one with similar problems. Each f-stop involves an added resistor in the chain that determines the exposure. I had one that was perfect except the shutter stayed open too long at f/16. Sounds pretty similar to your problem.

I don't know about DIY for this. Russ (b1bmsgt here) is able to fix a lot of these cameras; and Mark Hama (google him) in Atlanta has the electrical parts to fix anything in these cameras.

The camera is terrific once fixed up.
 
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