Question about Pentax MX 35mm SLR Camera

1 Answer

Pentax MX Mirror Stuck In Up Position

The mirror on my Pentax MX is stuck in the up position, so that when I look though the viewfinder I see nothing. I have changed batteries, and it flips down correctly about 1/30 of the time after a shot. Is this a electrical connection problem, and what can I do to fix it? How much would a fix for this cost at a camera repair shop?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 15 Answers
Re: Pentax MX Mirror Stuck In Up Position

This is a result of the linkage from the shutter release button being out of adjustment. It is a mechanical fault that can be repaired very easily.

Posted on Aug 29, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Viewfinder blurry Pentax K100

The image is directed by the lens to a mirror then to a prism then to the viewfinder. The mirror flips up when you take a picture so the image can reach the film behind it. If the lens is ok it is possible that the mirror is very dirty or not returning completely to the proper position after a picture is taken. If the mirror is dirty you should have it professionally cleaned because it is a very light weight metal mirror and VERY EASILY SCRATCHED. If you have another lens then mount it and see if it is also blurry and cannot be focused.

A few cameras like certain Olympus models have a mirror lock up option which you use after focusing the image while the camera is on a tripod. This gets rid of the slight vibration caused by the mirror swinging up out of the way while taking. a picture.

If all else fails you might consider taking it to a good camera shop if you can find one.

Digital cameras are getting better and better but there are still things film cameras can do that most digitals cannot. Long exposures in "Bulb" mode and multiple exposures are among these. Also each brand of film has it's own Artistic color expression such as Afgachrome vs. Kodachrome.

Jul 16, 2013 | Pentax K1000 35mm SLR Camera

1 Answer

Mirror is locked open

Unless you have experience repairing cameras, this is not a DIY fix. Take your camera to a reputable camera shop and have a trained professional look at it.

Feb 03, 2012 | Pentax ME Super 35mm SLR Camera

1 Answer

Not sure if the battery has ran or not but i can see through the viewfinder of my camera anymore its just black.

Hi thomasprinks, It may be the mirror is in the up position. Remove the lens see if you see a mirror or the shutter. If the mirror is up it may be stuck to the top of the film box. Those areas sometimes become tacky holding on to the mirror. You could remove the batteries to see if the mirror will fall into place.

Aug 19, 2010 | Nikon F65 35mm SLR Camera

1 Answer

Can't see through viewfinder

That will happen if the mirror is stuck in the up position and so blocking any light from entering the viewfinder.

Mirror lock-up is very common on 35mm SLR's like yours where the shutter is entirely electronically controlled and in most cases it's cured simply by fitting new batteries.

If this resolves your problem then please rate my answer, if not then add a comment instead to confirm that the batteries have been replaced and I'll try further options.

Apr 26, 2010 | Pentax ZX-50 35mm SLR Camera

1 Answer

The mirror on my pentax pz1 (film) camera is stuck

Mirror lockup often occurs if the batteries are flat.

Try new batteries first and if the problem remains please report back for further options.

Feb 13, 2010 | Pentax PZ-70 QD 35mm SLR Camera

1 Answer

When I look through the viewfinder, everything is dark....

First remove the battery. wipe off the battery contacts. reinstall the battery. Battery may be weak, replace.
If that fails, remove the lens. See the mirror in there?
If its stuck in the up position, you can return it by hand. But I recommend a toothpick. It won't leave fingerprints.

Oct 04, 2009 | Minolta Maxxum 400si 35mm SLR Camera

1 Answer

I am unable to view through the viewfinder. I have taken out the film, and I can even fire the shutter, and the view finder is still black. I removed the lens and the issue is still there. Any help would...

is the mirror stuck in the up position? if so the rubber bumpers have become sticky. try to ( gently ) pull the mirror down it should fall freely, then clean the mirror with alcohol. you may have to remove the foam rubber bumper to prevent the mirror from sticking again. the mirror mechanism will work without the bumper just fine.

Aug 01, 2009 | Ricoh KR-5 SUPER II 35mm SLR Camera

1 Answer

Shutter sticking open

Hey jimicricket,
The mirror is what reflects what the lens is seeing up to the viewfinder, and if it is sticking in the up position that is why you can't see anything sometimes thru the viewfinder. I would have the camera looked at by an authorized service technician, and it's possible that it just needs a good cleaning.

Go Ahead. Use Us.

May 28, 2008 | Canon T70 35mm SLR Camera

2 Answers

Black viewfinder

Slr mirror is stuck. remove the lens and try to slightly move the mirror up and down ( but not forcing it to move!)and pushing the shutter switch. Try also applying lighter fluid in the mechanism while operating or shooting, fluid will help loosen the stucked mechanism.

Aug 31, 2007 | Pentax ZX-7 35mm SLR Camera

Not finding what you are looking for?
35mm SLR Cameras Logo

Related Topics:

423 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pentax 35mm SLR Cameras Experts


Level 3 Expert

93895 Answers

Bill Eager

Level 3 Expert

421 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Pentax 35mm SLR Camera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides