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01-18-2015, 03:56 AM   #1
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Pentax MX shutter speed indication repair

I've got a slight shift of shutter speed in my viewscreen.
Meaning, when my camera is set to 1/125, I read 1/500 in the viewscreen. The shift is stable with 2 speed up difference.
Does someone know how to fix this by myself? It's not really annoying but having the right display can be better.
Thanks for your help.

01-18-2015, 04:37 AM - 1 Like   #2
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The dial in the viewfinder is coupled to the main shutter speed dial with a cable.
Adjustment is possible although from what I remember it's a bit tricky, search online for the MX service manual, all the information is in there.

Service manual here:

Last edited by Ray-uk; 01-18-2015 at 05:09 AM. Reason: irl added
01-18-2015, 06:06 AM   #3
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Thanks for the link. I'm gonna take a bit of time to read and understand it!
01-20-2015, 02:47 AM   #4
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One of my MXs suffer the same problem. If you find how to to do it easily, I'm all hears.....
Good luck !

01-20-2015, 04:37 PM   #5
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QuoteOriginally posted by Ray-uk Quote
The dial in the viewfinder is coupled to the main shutter speed dial with a cable.
Calling it a cable is being kind. It is more like a strong piece of thread and is a common point of failure on the MX. It is repairable if you have the time and tools and are willing to accept the risk.


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