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on Nov 1, 2018 1:59:58 GMT
Posted: Nov 1, 2018 1:59:58 GMT
Hi, I just bought a Yashica Electro 35 GSN on eBay "as is" (it was pretty cheap).
The camera arrived today and is in really good shape, looks like it's been on a shelf in its case for the last 40 years - but unfortunately, it's been on a shelf with a roll of partially used film in it and the battery in, and there was a bit of corrosion in the battery compartment. Pretty bad, but the cap cleaned up and the spring at the bottom looks pretty good after cleaning with white vinegar - we'll see how it checks out - I have a battery adapter on order (should be here in a few days) and will test electronics when it arrives.
I was just cleaning the camera up a little -looks like a little fungus in the film compartment, but lenses are really clean and clear. The camera gives a good "thunk" when winding it so no POD issue, and overall it looks like it'll work when I verify the connections are good.
I'm wondering about the little blades on the "window" of the light meter sensor - they were in a diamond shape and I was moving the ASA/ISO wheel (to make sure it moved smoothly) and I noticed that those blades opened up (slid back) and now, instead of that little diamond pattern, it is a wide open circle (blades are retracted). When I put the ISO dial from 25 to 1000 and back again, the blades are not moving (it now seems to be stuck in a wide open position).
Moving the aperture ring from f1.7 to f16 does not have any effect on these blades either.
These blades look like they should move with either the aperture ring or the ASA/ISO wheel, but don't, are they controlled electronically? If so, how was I able to get them to move from the diamond shape (which limits light into the meter) to the wide open position?
I tried to attach a photo, but could not, but hoping someone might know what I'm talking about
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on Nov 1, 2018 2:44:04 GMT
Posted: Nov 1, 2018 2:44:04 GMT
Welcome to the Forum, James. And you started with the classic model, too. What may be the problem is the blades in the meter window may be getting sticky because of old lubricant. You'll want to take the top cover off to do some cleaning, and re-lubing. While you have the top off, check on the battery wire connection with the meter, as that corrosion you found in the battery well has a tendency to work its way up the conductor, all the way to the meter sometimes. There is also a light seal around the rewind shaft you should check on.
Have fun with your "new" camera, and we're here to help you along.
PF
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on Nov 1, 2018 11:24:49 GMT
Posted: Nov 1, 2018 11:24:49 GMT
Thanks, I appreciate the help.
Do you (or anyone) know what is supposed to control those blades over the sensor? Is it the ASA knob? or the aperture ring that widens and narrows those blades?
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on Nov 2, 2018 2:36:59 GMT
Posted: Nov 2, 2018 2:36:59 GMT
When you get the top off, James, you will see that the masking is done by a pair of blades over the meter port which are controlled by the ASA dial. There is a pin that sticks up from the click stop wheel that is supposed to mate up with the ASA dial. The blades are spring loaded, and activated by a cam that is on the shaft below the click stop wheel. As you turn the ASA dial, it allows the main slider to move left and right by decreasing or increasing the diameter of the cam on which a pin from the main slider rests against, and transferring its motion in a 90 degree angle to operate the meter port blades.
So two things I can think of that would cause the blades to fail. 1) The ASA dial has not mated up with the nub on the click stop wheel for one reason or another (top cover deformed; click stop wheel pin or hole in ASA dial is worn; ASA dial is loose allowing it to ride up and over the click stop wheel pin). 2)The load spring on the meter port blade assembly has broken, or slipped its anchorage point.
Mind you, the ASA dial is a three-piece item. There is a retaining screw, the number plate, then the knurled ring plate that has the hole for the click stop wheel pin.
Hope this helps.
PF
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on Jan 3, 2019 23:16:49 GMT
Last Edit: Jan 3, 2019 23:18:36 GMT by jamestdoe
Thanks RidgeBlue, I know the items mentioned in #1 are all correct, so I will look at #2 and see if I can see a spring, or where a spring should be. In the meantime, I have sort of 'manually' set the ASA dial and the blades to 400 position and have been using 400 speed film - so far so good! But I'm limited to ASA 400 until I can get this sorted out.
Thanks!
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