OM-2S aperture ring problem

[michael_white4]

I'm hoping maybe John or someone else here can give me some pointers about this

problem.

 

I recently acquired an OM-2S with working electronics but unfortunately the camera

has a mechanical problem. I noticed that adjusting the aperture setting on the lens

had no effect on the camera meter reading. On the back of the lens is a lever

that engages a ring in the lens opening. On my other OMs this ring is under

spring tension so when the lens is removed it always sits at about the 9 o'clock

position. On this OM-2S there is no tension on the ring. I removed the shutter

speed ring and see that the aperture ring has a cord attached, which must be

attached to a spring somewhere which I think is the cause of the problem.

Because the cord doesn't retract under spring tension, the cord has damaged the

small spring finger contacts on the back of the ring. I think I first need to

determine

why the cord doesn't retract, and then repair the contact fingers on the back of

the ring.

I looked in the OM-2S exploded view PDF, but its not obvious how to access the

section

of the camera where the spring is located.

 

From what I've seen so far, the quality of the OM-2S is certainly a notch (or

two) below

the OM-1 and OM-2 . Still that spot meter capability sounds like a nice plus.

But I'd probably be better off just buying a good spotmeter and using my OM-1 :-)

[john_hermanson2]

The coupling ring string goes behind the front body casting and loops through a spring loaded pulley. Body would need a major disassembling to get to it. Here's a picture. Though this is an OM-4, 2S is pretty much the same. http://www.zuiko.com/index_005.htm. John