I was just thinking the other day that the OM2 i.c.s, can now easily be
replaced by substitute
surface mount parts. The opamp and fet pair can be replaced by a low voltage
cmos input opamp. The
comparator by a low voltage comparator.
In the OM2 the comparator and opamp are in common package but seperate sm parts
would actually be
smaller. The current draw would be a bit lower too. These would not be drop in
replacements but
not impossible to do.
In the OM2N there is an interlock timer/logic as well, which would be harder to
replace but could
be just eliminated to make the flash and long exposure behaviour exactly the
same as an OM2.
Tim Hughes
--- Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> Sorry, the original got clipped in the front somehow. Happens to me
> once in a while but only on this list.
>
> Chuck
>
> Your logic on the repairability of the OM-4Ti is impeccable but,
> unfortunately, incorrect. There are no electronic parts available
> except from organ transplant donors. And those are in extremely short
> supply since its the electronics which fail first. Stick with an OM-1n
> or and OM-2/2n if you want a repairable camera. Lots of parts still
> available.
>
> Chuck Norcutt
>
> Leandro DUTRA wrote:
> > 2007/9/3, Darin <d.rhein@xxxxxxxxxxx>:
> >> Perhaps an OM-2s would be another, more affordable, option. This would give
> >> her the choice of automatic or manual shutter speeds, and TTL support of
> >> her
> >> T-20 flash.
> >
> > My worry is about electronics failing. We don't have the resources
> > you have for repairs, and the OMâ??2s is an old model. Thus I am
> > considering the OMâ??1n a better bet; if I wanted to risk electronics, I
> > guess the OMâ??4Ti would be a more complete and, being more recent, more
> > repairable (is there such a word?) option.
> >
> > As for automation, she has an Eâ??510 already. So I guess the OMâ??1n
> > would be a nice, fully manual, counterpoint. Or a plain OMâ??1. I
> > gather they are cheap enough too.
> >
>
>
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