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Olympus 35 SP battery compartment (repair question)?
Old 02-03-2009   #1
IK13
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Olympus 35 SP battery compartment (repair question)?

In a sudden GAS attack last week I bought an SP (off the classifieds here). Got the camera today and it seemed to be overall in good shape. The lens is clear, and everything appeared to work. Thought I'll try it against my current fixed lens RF favorite (as far as IQ goes) - the inexpensive Konica S2.

The light meter reading was way off though.
No problem - I had converted a few cameras to use silver batteries by soldering a schottky diode in the circuit.

So I dropped the bottom plate and the battery compartment appear to have just one screw, holding the (-) contact spring. It's all plastic housing and I can't see anything else holding it. Well, I tried to unscrew this screw and it won't come out. It would turn all day long, but won't come out. The battery nest seemed very clean, but I suppose the thread was not in good shape and I didn't want to start with the pliers...

So at this moment I say to myself "screw it" (pun intended) - if it doesn't want to come out I'll just use zinc-air batteries.I put the bottom plate back, put the battery ...and no light meter.
I guess when I was trying to unscrew the battery compartment the wire came off

So now I have to fix it one way or another.

The problem is - I have no idea how to get the battery compartment/nest out. It seems to be holding pretty strong (glued?), so I'm betting it's not held only (if at all?) by this little screw.

How should I get the battery compartment out? Or might be I'm not supposed to?
Anybody?
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Old 02-03-2009   #2
zuikologist
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I'll look at mine tonight. From memory, I think it is glued.
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Old 02-03-2009   #3
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BTW you can use it manual mode without the meter. Sadly, you do lose the lovely spot meter function.
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Old 02-03-2009   #4
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I know I can use it without the meter. Just want to get it all working.
Yes, the spot meter is nice, even if very rudimentary.
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Old 02-03-2009   #5
cweg
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I had a look, and the battery chamber of mine 35SP is glued too.
I think you have to remove the Objetiv from the body. I have no guide for disassembling a 35SP but here is a guide to install a schottky to a Konica S2. It should be the same way to disassemble a 35SP.
http://flickr.com/photos/[email protected]/1359057093/
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Old 02-03-2009   #6
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Thanks cweg,
I've done it on a few Konica S2 without taking the lens assembly out - the whole battery compartment there comes off and it's really easy.
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Old 02-03-2009   #7
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Yes, I know. I disassembled a S2 myself and taking out the battery chamber is a two screws thing but if the chamber is glued like the 35SP I would take off the Objektiv to fix the cable. It's no big job and the meter works after that correctly.
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Old 02-04-2009   #8
John Hermanson
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Screw holds battery contact in with a nut on the other side. If you turn it, it's likely the nut will just spin. battery box itself is glued in with rubber cement. John, www.zuiko.com
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Old 02-04-2009   #9
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Thanks John,

That's what I figured. So what what would be the best way to take the battery compartment out (I have to resolder the wire)?
Pry it out and hope it won't break?

I don't think I can access the glue points and soaking it all with thinner just doesn't sound right.

Or do as cweg suggested and take the whole lens assembly out and access it from there while still in place?
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Old 02-05-2009   #10
John Hermanson
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Try to get a little lighter fluid under it to soften the glue. Then carefully pry up with screwdriver. John, www.zuiko.com
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Old 02-08-2009   #11
IK13
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Thanks John. Got it. The wire was so short that I had to remove the lens plate anyway. Put the schottky diode there and the meter seems ok.

Side note:
I was comparing the readings to the 20D and at first I was seeing discrepancies. Took me about 10 minutes to realise that the 20D was in evaluative mode. Once switched to average and the readings got very close.
I think the spotmeter is also quite useful also.

Had to remove the top to take out the lens plate so I cleaned the viewfinder too. Was sort of surprised to find the viewfinder assembly covered with black paper, instead of a black metal lid like other "lesser" rf are.
The focusing ring gets a little stiff (or rather sticky) towards the infinity, but it reaches and registers infinity right on, so I decided to leave it at that.

BTW - does anybody know what is the little screw in the middle of the ISO dial for?
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