It's the 1.55v alkaline battery (625A, 625U, A625) that causes a 3 stop
error in the 1 & 1N.
John
Stephen Worner wrote:
> John,
>
> A local camera shop tried to sell me a 1.5v version of the 625 battery
> over the weekend - you've no doubt seen it, same canister and polarity,
> higher voltage. Their disclaimer was 'it should be alright'.
>
> They're WRONG, I assume?
>
> Steve
> >
> >Your looking at the never-mentioned or documented battery check
> mechanism that
> >was built into early OM-1s. As a rule I take all those wiper parts out
> and
> >chuck em. If that white wire is attached to one of those wipers,
> unsolder the
> >other end and dispose of properly.
> >
> >John
> >
> >Jay Maynard wrote:
> >
> >> On Wed, Nov 11, 1998 at 04:44:08PM -0500, John Hermanson wrote:
> >> > Early OM-1 production used a white battery wire. Some were black.
> Later
> >> > this became brown, right up to the very last 1N (sigh). The layout
> of the
> >> > meter board changed several times too. The wire in question is
> probably
> >> > the battery wire and should be soldered to the switch contact.
> >>
> >> My OM-1 must not be as early as I thought. The pressure plate says
> October
> >> 1974, and it's S/N 314xxx. It has a brown battery wire connected to
> the
> >> switch. The white wire in question goes to one side of the meter.
> >>
> >> Here's where I get lost: The meter has 3 terminals. One, a blue wire,
> goes
> >> straight into the meter body. The second, a yellow wire, goes to a
> wiper
> >> contact at the back of the camera, and the white wire goes to a wiper
> on the
> >> front of the camera. Now, I'm not used to a single meter movement
> that has
> >> three places to connect stuff. What's going on here?
> >>
> >>
> >
> >
> >
> >
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> >
>
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