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Classic Camera Repair » Maintenance & Repair » Konica Autoreflex T strange shutter behavior: Any ideas? « Previous Next »

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Dcshooter
Tinkerer
Username: Dcshooter

Post Number: 10
Registered: 09-2011

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Posted on Wednesday, April 17, 2013 - 01:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

So I just picked up a fantastic specimen of this camera today that aside from needing new seal foam honestly appears unused. However, for some reason shutter speeds of 1/4 and below all seem to take much longer than they should. i.e. 1/4 takes about 4 seconds, 1/2 takes 8 or 9. Everything 1/8 and up appears fairly accurate when eyeballing the speeds against other known working cameras. Interestingly, if I move the shutter speed up to 1/8 during the several second delay, the shutter immediately trips.

Any ideas?
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Rick_oleson
Tinkerer
Username: Rick_oleson

Post Number: 1299
Registered: 07-2006

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Posted on Thursday, April 18, 2013 - 08:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

This sounds like a dirty timing escapement.
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Dcshooter
Tinkerer
Username: Dcshooter

Post Number: 11
Registered: 09-2011

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Posted on Friday, April 19, 2013 - 06:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Thanks Rick,

Now to crack it open and see how accessible it is on this model!
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M_currie
Tinkerer
Username: M_currie

Post Number: 299
Registered: 07-2006

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Posted on Monday, April 22, 2013 - 07:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Although I'm sure a CLA would be the best solution, if the thing has sat a long time, the cheapskate's first move would be to set it on each of the low speeds, and fire it about 50 times. Sometimes a lazy escapement will wake up with use.

I've had good luck on a couple of old cameras that would occasionally misfire on low speeds. Worth a try, at least.

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