problem is most likely NOT the photodiodes. They're not available anyway
and it's far from a do it yourselfer.
John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Ln. Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
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----- Original Message -----
From: Lyle Olsen <lo@xxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Sunday, May 28, 2000 4:35 PM
Subject: Re: [OM] Update on Om-2n problems
> I have been following this thread with interest because I have a similar
problem with an OM2N.
> In my case, I don't have the mirror lockup on auto--it fires ok--but I
seem to have the same
> shutter speed (1/60 I would estimate from the sound of it) on auto no
matter what the aperture
> setting. Would this similarly indicate either photo diodes or switch as
in the case of the
> mirror lock-up? On manual works ok, but these are different detectors
aren't they?. Are
> photodiodes still available, and is this a job a handy person could do, or
is it off to the shop
> at $140 or so after shipping both ways?
> Thanks
> Lyle
> lo@xxxxxxxx
>
> Date: Sun, 28 May 2000 03:25:25 EDT
> From: HI100@xxxxxxx
> Subject: Re: [OM] Update on Om-2n problems
>
> burrisja@xxxxxxxx writes:
>
> << The shutter and mirror lock open which suggest to me that the OTF
> metering is not operating properly. Any other suggestions??? >>
>
> Since the camera works on manual, and all the active circuit components
> (amplifiers etc) are common to both manual and auto mode this tends to
> implicate either the photodiodes or the switch which connects the
> photodiodes
> on auto. The most likely culprit is probably the switch or wiring to
> the
> switch since it would be unlikely for both the photodiodes to fail
> simultaneously. To check the switch you would have to remove the top
> panel
> which requires some handtools and some reasonable level of mechanical
> skill
> and then clean the auto/manual switch. To check wiring would
> additionally
> require getting at the circuit board in the mirror box base.
>
> Tim Hughes
> >>Hi100@xxxxxxx<<
>
>
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