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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