The MR-9 is the go. Unless your camera is in for a service. Here is an email
from John at Camtech.
Foxy
Between the meter switch and the CDS cells I insert an NTE109 diode.
I have not yet found the exact size washer for the battery box so I am
working
from stock nylon spacers and cutting them down with a Dreml. Joels was the
first
conversion I did.
The $5 price is for list members only. Everyone else is $10 with overhaul.
(I've still got MR9s on back order since March!)
John
Joel Wilcox wrote:
> Olympus Shooters:
>
> I had an OM-1 at John Hermanson's place for service when he announced the
> availability of a modification for $5 over the cost of the overhaul to
> allow the use of a 357 battery . So I arranged to have this done to my
camera.
>
> Unlike the MR9, which is an adapter the size of the old mercury battery
and
> can be removed, John's mod involves a beveled plastic ring which is glued
> into the battery cup so that a 357 fits neatly and securely. I'm not sure
> how John modifies the circuit to make the 1.5 volt battery work properly.
> John, can you explain?
>
> Anyway, I like this option and will have it done to my other OM-1 when the
> time comes for service.
>
> Cheers,
>
-----Original Message-----
>O.K. Let me bore you with a newbie question. What is the best solution to
the
>battery problem with the early OM's. Is the MR-9 the best solution or are
>there others. I'm sure this has been thrashed to death; but, I just joined
the
>list :)
>
>Jim
>
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