Archived posting to the Leica Users Group, 2003/02/22

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Subject: Re: [Leica] RE: Longevity of Leica products
From: Javier Perez <summarex@yahoo.com>
Date: Sat, 22 Feb 2003 13:30:48 -0800 (PST)

I'm not sure what's inside an M7 but it can't be much
in terms of circuitry. It's also quite probable that
the circuitry will outlive the mechanicals by 10 to
one. Only the electrolytes can cause trouble but most
cameras today use few of these and speed is quartz
xtal regulated. I have seen crystals go bad but it's
rare and they are generic. If you are really scared of
not being able to use your m7 30 years from now get a
spare  circuit set or 2 instead. If film still exists
in 2032 you'l be all set.

Javier

- --- Mike Durling <durling@cox.net> wrote:
> It will be THEORETICALLY possible to create a
> circuit in the future that 
> will emulate one that used obsolete components. 
> Whether it will be 
> practical to reverse-engineer something like an M7's
> shutter circuit is 
> another thing altogether.
> 
> People do this now with the original Nintendo game
> system.  They stuff a 
> small general-purpose computer into the old case and
> run emulation 
> software.  Why they do this is another question,
> since the part that 
> wears out on a Nintendo, its cartridge connector, is
> available as a 
> replacement item.
> 
> All this being said, I agree that it is, and will be
> for the forseeable 
> future, easier to cut a gear.
> 
> Mike D
> 
> Frank Filippone wrote:
> > Sal.. the issue is NOT the circuit boards... it is
> in the IC's ( chips) that
> > are mounted on them.  When they are no longer made
> by the IC companies,
> > there are no more.  ( assumes stock is also used
> up.)
> > 
> > Austin may correct this, but the IC processes have
> moved forward so quickly
> > that in 5 years, most if not all the older process
> chips would be un
> > manufacturability.    Yes, inventories exist of
> these chips, but again, when
> > they run out, that is it.  Your M7 shutter might
> as well be a door stop.
> > 
> > It is not a matter of desire to support customers,
> it is the ability to get
> > the parts that is the problem.
> > 
> > Long live the M1,M2,M3,M4,M5,M6!  All-Mechanical
> shutters rule!
> > 
> > Frank Filippone
> > red735i@earthlink.net
> > 
> > 
> > --
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> > 
> 
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