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[OM] Re: OM's in demand?

Subject: [OM] Re: OM's in demand?
From: Chris Crawford <chris@xxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 04 Sep 2007 12:46:35 -0600
How about the OM-4T? Last time I checked your website it said circuits were
not available for the OM-4 but were available for the T.


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Chris Crawford
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On 9/4/07 8:17 AM, "John Hermanson" <omtech1@xxxxxxxxxxx> wrote:

> 
> I still have replacement OM-2/2N circuits in stock, leftover from my
> days as an Olympus subcontractor.  When all else fails,
> there is the option to take a circuit from a parts body.
> 
> ___________________________________
> John Hermanson
> Camtech Photo Services, Inc.
> 21 South Lane, Huntington NY 11743
> 631-424-2121 | Olympus OM Service since 1977
> http://www.zuiko.com  |  omtech1 AT verizon dot net
> 
> 
> Tim Hughes wrote:
>> 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 OM‐2s is an old model.
>>>> Thus I am considering the OM‐1n a better bet; if I wanted to
>>>> risk electronics, I guess the OM‐4Ti would be a more complete
>>>> and, being more recent, more repairable (is there such a word?)
>>>> option.
>>>> 
>>>> As for automation, she has an E‐510 already.  So I guess the
>>>> OM‐1n would be a nice, fully manual, counterpoint.  Or a plain
>>>> OM‐1.  I gather they are cheap enough too.
>>>> 
> 
> 
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