On 3 Nov 2003 at 13:37, gilbert.h.tseng.1 wrote:
> >I know that[*], but all it took to solve it was warming up, and all
> >it caused was long storage in a (by then) cold room. It might be
> >oxidation of the contacts (though it's far from moist in that room,
> >just a bone cold bedroom, and the camera was deep inside a Lowe bag),
> >but I would have expected that under any other condition than this
> >one....not by storage only.
> >
> >[*] once repaired a broken/damaged EOS-1 (started with only a broken
> >LCD on top, ended with only a (partly) broken viewfinder-LED....oh
> >well, too much work to open up the top cover again....:))
>
>
> The warming might have solved it because the warming caused the metal
> to expand making a better contact. I've seen that on a number of
> circuit boards I've worked on. You can sometimes test this by taking
> a can of compressed air and shooting it upside down at the LCD when it
> is warm.
I suspected that, but did not *ex*pect it, at least not with an EOS-1
(that has otherwise been very gently treated, looks as new), and
which has also seen much much worse climatic conditions (-20C while
skiing, gushes of snow over it when the backpack was open, melting
back to snow indoors/overnight, etc).
And even if, the question remains whether it was pure physical thermo-
dynamics, or also chemical, in the context of oxidation of the
contacts, especially after long storage....taken the latter to the
extreme, I should throw the camera through several much more severe
temperature shifts, to rub the contacts clean, internally....:))
>
> Gilbert
> (A 6 or so year lurker... :-)
Welcome out of the (quite dusty/spider-webbed) closet....;))
--
Bye,
Willem-Jan Markerink
The desire to understand
is sometimes far less intelligent than
the inability to understand
<[EMAIL PROTECTED]>
[note: 'a-one' & 'en-el'!]
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