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RolleiJo · 01-18-2015, 03:56 AM

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.

Ray-uk · 01-18-2015, 04:37 AM - **1 Like**

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: http://www.pentax-manuals.com/manuals/service/mx_sm.pdf

RolleiJo · 01-18-2015, 06:06 AM

Thanks for the link. I'm gonna take a bit of time to read and understand it!

nass_43 · 01-20-2015, 02:47 AM

One of my MXs suffer the same problem. If you find how to to do it easily, I'm all hears.....
Good luck !

stevebrot · 01-20-2015, 04:37 PM

Originally posted by Ray-uk

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.

Steve

01-18-2015, 03:56 AM	#1
RolleiJo New Member Join Date: Jan 2015 Posts: 9	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
Ray-uk Senior Member Join Date: Oct 2013 Location: Kent Photos: Gallery Posts: 159	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: http://www.pentax-manuals.com/manuals/service/mx_sm.pdf Last edited by Ray-uk; 01-18-2015 at 05:09 AM. Reason: irl added

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01-18-2015, 06:06 AM	#3
RolleiJo New Member Join Date: Jan 2015 Posts: 9 Original Poster	Thanks for the link. I'm gonna take a bit of time to read and understand it!

01-20-2015, 02:47 AM	#4
nass_43 Junior Member Join Date: Aug 2009 Posts: 39	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
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Ray-uk 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. Steve

Pentax MX shutter speed indication repair

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