MP meter NG under -3 C.

Discussion in 'Rangefinder Forum' started by Roger Pellegrini, Dec 20, 2008.

  1. Roger Pellegrini

    Roger Pellegrini Subscriber

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    My MP meter doesn't work under -3 degrees C. (26+/- degrees F). The indicator light and the arrows in the viewfinder just disappear. Once I bring it inside and it warms up, it works again. Is this normal?

    Roger Pellegrini
     
  2. Nicholas Lindan

    Nicholas Lindan Advertiser

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    If it dies over a period of a few minutes then the most likely cause is the battery is getting old doesn't like cold weather anymore.

    Try a fresh battery.
     
  3. Jon Butler

    Jon Butler Subscriber

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    Have you tried new batteries?
    JON.
     
  4. Roger Pellegrini

    Roger Pellegrini Subscriber

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    Okay. I'll try a new battery. But the one in there now I just purchased three weeks ago. I guess it could have been on the shelf for too long. The only thing is, the battery icon doesn't come on. There are just no meters lights. And when I bring it back in and it warms up, everything works well.
     
  5. Ralph Javins

    Ralph Javins Member

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    Good morning, Roger;

    A less likely possiblility is a contact that pulls away when it is cold. With older equipment, this can be an uncommon problem. I have used an electrical multimeter in conductivity or "ohms" mode and sprayed some "Freeze-Mist" low temperature cooling spray on parts and pieces to try locating this kind of a thermal intermittent.

    Try the new or different battery first. Taking something apart and hunting for an intermittent is never fun. There is a reason why we referred to these kind of jobs as "dogs."
     
  6. epatsellis

    epatsellis Member

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    by any chance, does this have an LCD display? I have a Luna Pro for cold weather, as LCD's response times slow down and eventually stop working altogether in cold weather.
     
  7. benjiboy

    benjiboy Subscriber

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    The problem is due to the laws of physics battery's at very cold temperatures will not give out any power, it would be a good idea to see if Leica make a remote battery holder you can keep in your pocket as many camera manufacturers do.
     
  8. Roger Pellegrini

    Roger Pellegrini Subscriber

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    Hope its just the battery

    Thanks. I will try the new battery first and hope that is the problem.
     
  9. PhotoJim

    PhotoJim Member

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    -3 C is not that cold. I don't have any cameras that work at 20 C but won't work at -3 C. They will even work at -30 C (although not for long).

    LCD displays work down to very cold temperatures, although the update speed slows down significantly. Still, at -3 C such a display should work normally enough that it would be useful.
     
  10. Roger Pellegrini

    Roger Pellegrini Subscriber

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    That's what I was thinking. I am hoping it is just the battery (although I just put a new one in 3 weeks ago) and not something more serious.
     
  11. MattKing

    MattKing Subscriber

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    Correct me if I'm wrong, but I think if the battery contacts are corroded or dirty, they add resistance, and will make the entire circuit less efficient. The problem may be a combination of cold and less than optimum contacts.

    I think it is worth checking.

    Matt
     
  12. budrichard

    budrichard Member

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    I never walk into a B&M store and purchase camera batteries anymore but do so through one of the on-line services. I have had batteries from B&M stores be degraded right out of the box. The large on-line suppliers seem to have a good turnover.-Dick
     
  13. sbelyaev

    sbelyaev Member

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    You have to turn MP OFF when you don't use is, otherwise it drains the battery very quickly.
    Another way to go is not to re-cock the shutter after shooting if you don't plan to use the camera for some time.
     
  14. Roger Pellegrini

    Roger Pellegrini Subscriber

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    That's good to know. I will purchase a new one online.
     
  15. Roger Pellegrini

    Roger Pellegrini Subscriber

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    The battery shows no signs of being drained once the camera is inside and warm.
     
  16. Roger Pellegrini

    Roger Pellegrini Subscriber

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    It must be the contacts. I have tried three different batteries and the problem persists.
     
  17. Tim Gray

    Tim Gray Member

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    Yeah I would say it's not normal. My M7 and M6 have been in colder temperatures and never had a problem with power.
     
  18. budrichard

    budrichard Member

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    High temps have been 10F here lately and I've been out with both my M7's, one with Motor M and one with Leicavit and both function perfectly.
    Batteries, corroded contacts adding resistance or a contact contracting due to cold, as stated, are all possible causes.-Dick
     
  19. Roger Pellegrini

    Roger Pellegrini Subscriber

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    I just got off the phone with Leica Techhical Services in NJ. They are telling me that the MP meter does not work at -3 degrees C because the battery gets too cold. Unbelievable!