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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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 Posted: Sat Sep 05, 2009 9:52 pm Post subject: Pentax 645 reset |
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Attila wrote:
Today I couldn't switch mode on my Pentax 645 it was always in manual mode and I couldn't change shutter speed. Manual said I have to replace lithium battery. Is this happened with anybody before ?
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Farside
Joined: 01 Sep 2007
Posts: 6557
Location: Ireland
Expire: 2013-12-27
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| Posted: Sat Sep 05, 2009 11:52 pm Post subject: Re: Pentax 645 reset |
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Farside wrote:
| Attila wrote: |
| Today I couldn't switch mode on my Pentax 645 it was always in manual mode and I couldn't change shutter speed. Manual said I have to replace lithium battery. Is this happened with anybody before ? |
Not happened to me specifically with a P645, but several cameras will default to one speed in manual mode if the battery goes down.
I think my M645 will only fire at 1/60th with a dead battery.
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Sat Sep 05, 2009 11:53 pm Post subject: Re: Pentax 645 reset |
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Attila wrote:
| Farside wrote: |
| Attila wrote: |
| Today I couldn't switch mode on my Pentax 645 it was always in manual mode and I couldn't change shutter speed. Manual said I have to replace lithium battery. Is this happened with anybody before ? |
Not happened to me specifically with a P645, but several cameras will default to one speed in manual mode if the battery goes down.
I think my M645 will only fire at 1/60th with a dead battery. |
Thanks Dave!
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Laurence
Joined: 26 Mar 2007
Posts: 4809
Location: Western Washington State
Expire: 2016-06-19
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| Posted: Sun Sep 06, 2009 12:04 am Post subject: |
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Laurence wrote:
Yes, this happens occasionally. Seems that the average is about 5 years, although many 645s go a lot longer before having to replace the lithium battery.
You can do it yourself, even though Pentax recommends sending the camera in. 
Just be sure to have the main camera switch "on", so that when you take out and replace the lithium battery, you don't lose the power to the LED. If you don't turn the main switch on, then you could possibly lose the "base battery power" (I don't know what they actually call it) and have to send to Pentax for reprogramming.
Larry 
_________________
Assent, and you are sane;
Demur,—you ’re straightway dangerous,
And handled with a chain.
Emily Dickinson
Cameras and Lenses in Use:
Yashica Mat 124 w/ Yashinon 80/3.5,
CV Apo-Lanthar 90/3.5SL, (Thank you Klaus),
Pentax 645,
Flek 50,
Pentax-A 150
Pentax-A 120 Macro
Voigtlander Vitomatic I w/Color Skopar 50/2.8
Konica TC and zoom lenses (thanks Carsten)
Contax AX
Yashica ML 50/2
Yashica ML 35/2.8
Carl Zeiss Contax 50/1.4
Tamron Adaptall SP 17/3.5
Tamron Adaptall 28/2.5
Tamron Adaptall SP 300/2.8 LD (IF)
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Sun Sep 06, 2009 12:17 am Post subject: |
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Attila wrote:
| Laurence wrote: |
Yes, this happens occasionally. Seems that the average is about 5 years, although many 645s go a lot longer before having to replace the lithium battery.
You can do it yourself, even though Pentax recommends sending the camera in.
Just be sure to have the main camera switch "on", so that when you take out and replace the lithium battery, you don't lose the power to the LED. If you don't turn the main switch on, then you could possibly lose the "base battery power" (I don't know what they actually call it) and have to send to Pentax for reprogramming.
Larry |
I did take out both batteries to get reset , because it did n't work. Now works fine with same batteries. I will look for a new one and replace it.
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Laurence
Joined: 26 Mar 2007
Posts: 4809
Location: Western Washington State
Expire: 2016-06-19
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| Posted: Sun Sep 06, 2009 2:58 am Post subject: |
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Laurence wrote:
Great Attila! I am happy that it looks like it will work for you!
Larry
_________________
Assent, and you are sane;
Demur,—you ’re straightway dangerous,
And handled with a chain.
Emily Dickinson
Cameras and Lenses in Use:
Yashica Mat 124 w/ Yashinon 80/3.5,
CV Apo-Lanthar 90/3.5SL, (Thank you Klaus),
Pentax 645,
Flek 50,
Pentax-A 150
Pentax-A 120 Macro
Voigtlander Vitomatic I w/Color Skopar 50/2.8
Konica TC and zoom lenses (thanks Carsten)
Contax AX
Yashica ML 50/2
Yashica ML 35/2.8
Carl Zeiss Contax 50/1.4
Tamron Adaptall SP 17/3.5
Tamron Adaptall 28/2.5
Tamron Adaptall SP 300/2.8 LD (IF)
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Sun Sep 06, 2009 9:42 pm Post subject: |
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Attila wrote:
Finally I found what did happen. Nothing was wrong with camera , battery replacement wasn't necessary everything was normal.
I didn't realize camera goes to "A" mode only if film already inside, due I did try camera always with film. When I saw problem film was already exposed and forwarded to it's end. I would use as a light meter for my folder and I couldn't due obvious reason film was ended camera did stop working even light meter wasn't work what is normal just I didn't know that.
_________________
-------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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