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My mamiya 645 frame counter doesnt go back to S after removing the film back. I used my finger to reset it from inside the camera and worked fine.

Posted by Alex Echeverria on

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Anonymous

  • 667 Answers

SOURCE: Frame counter-can't shoot

Having film in the camera makes no difference for the frame counter to work on this model. The counter is activated by a small tab that protrudes from the top edge of the film door near the hinge.

Locate the area on the camera where that tab meets in the channel along the top of the film compartment. There is a small opening for the lever that engages the drive gear for the counter. The opening may have debris (foam) or the tab may be broken. If neither of these is the case, the film door may be bent slightly and is not pushing the lever in far enough.

It is important for the counter to work on the FG since the metering is not active until the counter reaches '1'. (switch) It blinks 60 &125 in the display otherwise

Posted on Jan 05, 2008

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Anonymous

  • 216 Answers

SOURCE: Mamiya M645j film counter not advancing to start when roll loaded

It's a common problem in the 645 - if you want to do it yourself, without a permanent fix, put a DROP ( not a lot ) of lighter fluid, or rubbing alcohol on the tip of a fine screwdriver and apply it to the gear you use to rewind the camera, and turn back and forth a few times. If that doesn't loosen it, it'll have to be disassembled.

Posted on Jan 08, 2009

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David Shaub

  • 2976 Answers

SOURCE: Frame Counter Indicator does not go beyond the 26th and 27th Frame

Considering the age of the camera, you probably have a broken indicator gear in the top of the camera. The chances of getting it replaced aren't good. If it still works otherwise, I wouldn't worry about it. Just use 24 exposure film.

Posted on Feb 05, 2009

cpt100

CameraFix.com

  • 154 Answers

SOURCE: FRame Counter does not move beyond the 26th Frame even in a 36 roll Film

Simple, the film counter unit has plastic gears underneath. the gear position or gear has worned out. simply replace the counter unit and adjust. This can be performed by any local repair shop for less than $100. -James. for further assistance email, go to www.camerarepairjapan.com

Posted on Mar 26, 2009

Anonymous

  • 216 Answers

SOURCE: I have a mamiya 645 pro camera I can't remove the

Squeeze the two handles on either side of the "120" or "220" label on the film holder to pull it out, then the spool is easily removed.

Posted on Jun 16, 2009

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1 Answer

Mamiya RB67 Pro S: film counter does not advance, but the film does advance purchase another back same problem. Is there a switch that I'm missing??


If the problem is on the magazine's counter and if the spacing of frames is correct then the counter dial is loose. two screws on the outside front of the top of magazine, two screws in the film chamber hold the top cover. remove leather cover on winding lever loosen screw and remove. you can then remove the complete top housing to expose the counter mechanism.

Oct 30, 2013 | Mamiya Rb67 Pro S Medium Format Camera-...

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Just got a 645= shutter "release jammed:, I put in new battery and also missing the crank arm, must have had a motor handle before. its like new, meter in prism works new battery,have old 645 J to...


if the shutter is jammed just off the device,and slightly pull the shutter door with your hand 3-4 times.apply a drop of oil on both the sides.and then on the device.and check it will work.
and for the replacement off the handle you will have to check on the old device that where are locks in the back you just have to remove that locks,also check for the hidden screws in the centre or back of the handle.which may be blocking it to be removed easily.

thanks.

Oct 11, 2008 | Mamiya Cameras

1 Answer

Mamiya 645 pro shutter doesn't fire


First thing that comes to mind on this camera is that it's a modular camera. This means the film back can be changed mid roll so there is what is called a Dark Slide between the film back and the body.

The dark slide needs to be removed before the camera will function. Also depending on how "new" the film back is there may be a dark slide holder/sleeve on the back side of the film back.

So you remove the dark slide and slide is into the holder so first you don't loose it and also it doesn't get bent.

Diagram
tri3mast_127.jpg

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1 Answer

Mamiya 645 AF back won't advance film.


The battery in the film back is only used to supply power when the back is off the camera, when it is on the body power is supplied by the six batteries in the body so try them and also make sure the film insert is properly seated.

Feb 07, 2010 | Mamiya 645AF Medium Format Camera

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Pro-S film back doesn't advance film properly.


There is good chance that the back needs a spring replaced. I've seen them fail many times.

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My Mamiya RB67 triggers and shutter lease lever works but film advance lever doesn't move. Trigger button fired several times but film advance still showing 1.


This is not the best solution as it indicates a faulty film back. The film should advance without resorting to activating the film-wind release lever. That is only for intentionally advancing a partially exposed roll of film. Make sure the multi-exposure lever is not engaged and that the counter does advance and the red mark disappears as you advance to an unexposed frame.

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I have a mamiya 645 pro camera I can't remove the old film spool from the camera ? JoAnn


Squeeze the two handles on either side of the "120" or "220" label on the film holder to pull it out, then the spool is easily removed.

Jun 15, 2009 | Mamiya 645 Pro 80mm F2.8 N/L Lens

1 Answer

Mamiya M645j film counter not advancing to start when roll loaded


It's a common problem in the 645 - if you want to do it yourself, without a permanent fix, put a DROP ( not a lot ) of lighter fluid, or rubbing alcohol on the tip of a fine screwdriver and apply it to the gear you use to rewind the camera, and turn back and forth a few times. If that doesn't loosen it, it'll have to be disassembled.

Jan 07, 2009 | Mamiya 645 Medium Format Camera

1 Answer

Wind / shutter issue (2nd try to post)


It sounds like there is a problem with the frame counter in the film back itself. Try operating the camera with the back removed and on multi-exp to check the shutter functions.

Aug 10, 2008 | Mamiya Photography

1 Answer

Shutter stays open on mamiya 645 M


Get any crud from the battery out of the works with pH-neutral stuff and q-tips or lint-free towels, and see if it works (without film; might as well check current drain with a bench supply instead of a battery, too) once you've done a satisfactory job of that.  Then visit a shop so they can see if the shutter timing is tolerable...and perhaps sometime you can load film in again.

Jul 31, 2008 | Mamiya 645 Medium Format Camera

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