Mamiya TLR shutter problem

Discussion in 'Medium Format' started by dean___, Oct 29, 1998.

  1. I acquired a Mamiya C3 and set of lenses this last summer. finnaly I
    took it out to catch some snow scenes and the 180 mm lens shutter
    cocked but no shutter action . it worked fine in August. could it be
    that it requires cleaning??? or is the expence of that more than the
    value of a replacement lens?
    is there a reputable repair service available??
    thanks in advance
    Dean
     
  2. Sounds like a combination of needing a clean and cold stiffening the
    lubricants. Does it work now it's back in the warm?
     
  3. I've had two shutters fail like you explained. Both were
    unrepairable. Have then checked out hovever, don't take my word.
     
  4. the first thing I thought was the cold but after being in the house
    and fully warmed over several days. I can hear the little ticky sound
    of the "timer ?" in there but it doesnt complete its cycle. and the
    shutter leaves do not open at all. It possibly could be old lube as
    I was told they were just sitting in a box for many years.
    thanks again!
    Dean
     
  5. Do you keep the flash sync set to "X"? "M" sync has a seperate delay
    mechanism that can hang up.
     
  6. Tims note sounds interesting... I looked at it and set it from "X" to
    "M" because I wasnt using flash, and was shooting 1 second at f22....
    if that was the cause can it be un stuck?
    Thanks again
    Dean
     
  7. Dean;

    <p>

    Is the lens hung up in the cocked position or does it cock and
    release, but the shutter never opens? My two shutters would cock and
    release, but the shutter blades never opened. Both pronounced DAO by
    camera shop technican.
     
  8. I understand from a technician (I had the same problem) that once
    they go, they go...

    <p>

    Sorry - not much help!

    <p>

    Simon
     
  9. Dean, I'm not a shutter repairman, but here's a tip I picked up
    recently from a repair book written by a man named Tomosy. before you
    chunk the lens, try this.

    <p>

    Unscrew the front element to expose the shutter blades (Tomosy's
    idea). Cock the shutter, set it to "B," then press and hold the
    release lever; leave the lens on the camera and use a locking cable
    release (all my ideas). Use a toothpick (my idea) or tweezers
    (Tomosy's idea) to very gently nudge the shutter blades in an attempt
    to get them to snap open. If that succeeds, you will have proved that
    the problem is nothing more than gooey stuff in the shutter works
    (easily repairable). And because you locked it open with a cable
    release (my idea, remember?), the thin, very delicate shutter blades
    will not try to play "guillotine gotcha" with the toothpick or tweezer
    you just stuck into its throat!

    <p>

    If all else fails, consider sending the thing to me to let me take a
    shot at it.

    <p>

    Mel Brown
     
  10. HOORAY!!!!
    Yesterday, After my tears of grief had dried enough to keep
    them out of the lens, I
    got too thinking and took a look , and screwed the front part of the
    lens
    off from in front of the shutter, set it to "B" and f 4.5, and then
    cocked
    the shutter, when I pressed and held the shutter release lever I
    reached in
    with a clean pencil eraser and gave it a gentle boost in the correct
    direction and !!!!!!!My tears of sorrow turned to tears of joy as the
    shutter cycled again and again on its own.... now I just have to dry
    the
    damn tears outta there.... ha ha
    after reading Mels message I thought I better post my good news,
    interesting to see that was almost exactly what I did, except that I
    used the eraser because in theory (mine) it is softer and less likly
    to scratch. I am also interested to find out about that book.... does
    he mention how to get rid of fungus?? my 65mm lens came from the
    oregon coast and has a white foggy/gooey looking surface on the
    inside of the lens that sits closest to the film.
    just curious,
    Thanks to all
    best regards

    <p>

    Dean
     
  11. I've read an interview with a person from a repair company that is
    going to retire on short terms. The only remedy for fungus is to
    clean them and use some of the fluids of your mouth to really remove
    the fungus. clean again , assemble ... et voila.........
     

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