Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-27-2012, 10:05 PM   #1
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Mirror Cycles At Wrong Time

I have a K-r that was cycling the mirror at the wrong times. Almost any control would cause the mirror to cycle, though no photo was being saved. Sometimes it would runaway and only turning the camera off would make it stop. Move the E-dial, click! Any button or switch would start the clicking. Even half depressing the shutter button to the focus position would start the mirror clicking.

Finally I changed the battery and it began to function properly. I went from the Lithium-ion battery to AA Ni metal Hydrides and even after I charged the Li-Ion battery the camera would start to malfunction after only a few minutes.

Anyone know anything about this?

04-28-2012, 12:56 AM   #2
Site Supporter
Chaos_Realm's Avatar

Join Date: Feb 2011
Location: Melbourne, Australia
Photos: Gallery | Albums
Posts: 1,248
This is a very strange problem. I have never seen or heard of it before. Have you tried restoring to factory defaults?, if that doesn't work maybe re-install the firmware.
04-28-2012, 10:27 AM   #3
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Original Poster
Since I wrote the first message I have defined the problem some more. Even with the AA batteries I am getting trouble with 'misfires' where the mirror folds but no image is saved. This is worse if I am using the flash, live view and when the batteries are not freshly charged. Firmware is still 1.0. I have not restored the factory defaults, but went through them carefully and did not find anything that looked wrong.

BTW this camera was bought used with about 1400 exposures. I don't know if the 'misfires' counted. I don't expect the warranty would be valid because I didn't get it from a dealer.
04-28-2012, 03:10 PM   #4
Site Supporter
Chaos_Realm's Avatar

Join Date: Feb 2011
Location: Melbourne, Australia
Photos: Gallery | Albums
Posts: 1,248
Yeh, unfortunately as your the second owner your not covered. Though if the previous owner pasted on the blank warranty card it might be worth a shot.
Although I would definitely upgrade the firmware before you send it in. As sometimes
Firmware gets corrupted. I can't be positive this is the cause but it's a free option non-the-less.

04-30-2012, 05:37 PM   #5
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Original Poster
After a little more experimentation it appears that the mirror is failing to lock into position with anything less than fully charged batteries. If I put fully charged batteries into the camera the first thing that happens is the mirror clicks into position. Take about twenty shots and then the shutter sound changes from click-click to click-click---click. The camera is now mis-firing and if I push the shutter button as soon as the prefire position is reached the mirror clicks. If I push the live view button the mirror clicks over, and over, and over until I turn off the power switch.

I'll try the firmware. Really seems like a mechanical problem though.

I am coming to believe that this camera was a Fry's demo that they did not want to repair so they gave it to Goodwill, where I bought it. I knew there were problems, but wanted to give it a try. Just hoping someone else had some experience with this problem and could give a hint.
04-30-2012, 05:53 PM   #6
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Original Poster
See thread "Pentak k-r shutter problem!". This appears to be the same problem.
04-30-2012, 06:05 PM   #7
Site Supporter
Chaos_Realm's Avatar

Join Date: Feb 2011
Location: Melbourne, Australia
Photos: Gallery | Albums
Posts: 1,248
QuoteOriginally posted by Sloglass Quote
After a little more experimentation it appears that the mirror is failing to lock into position with anything less than fully charged batteries. If I put fully charged batteries into the camera the first thing that happens is the mirror clicks into position. Take about twenty shots and then the shutter sound changes from click-click to click-click---click. The camera is now mis-firing and if I push the shutter button as soon as the prefire position is reached the mirror clicks. If I push the live view button the mirror clicks over, and over, and over until I turn off the power switch.

I'll try the firmware. Really seems like a mechanical problem though.

I am coming to believe that this camera was a Fry's demo that they did not want to repair so they gave it to Goodwill, where I bought it. I knew there were problems, but wanted to give it a try. Just hoping someone else had some experience with this problem and could give a hint.
It just twigged. Its the old Mirror Flop issues, see this thread for the run down

https://www.pentaxforums.com/forums/pentax-k-5-forum/152033-k5-mirror-flops-s...gun-found.html

Edit: Sorry didn't see your post (I was reading the other thread on mirror flops)
04-30-2012, 06:21 PM   #8
Pentaxian
twitch's Avatar

Join Date: Nov 2009
Posts: 4,571
What you describe is definitely the "Mirror Flop" problem found in some K-5's and K-r's.

Whoever sold you the camera was, well, less than honest IMHO. Given the fix is to replace the "main processing board" of the camera I can't imagine it will be cheap for you. Do you have any recourse with the seller?? They will be able to return the camera and get it fixed under warranty.

04-30-2012, 08:17 PM   #9
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Original Poster
Yes & no. The problem seems the same but on my camera it happens when the battery is low but the people with the K-5's seem to be having trouble when the battery is newly charged.

Twitch, the camera was sold as needing repair and at a much reduced price. I have no complaints.
05-03-2012, 05:45 PM   #10
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Original Poster
I finally found that the mirror flop condition seemed to become better after I removed and cleaned the contacts on the DAL 18-55 lens. After that I replaced the DAL lens with a DA 18-55 after cleaning the lens mount contacts again. I have shot over 100 pictures since replacing the lens an have not had a 'mirror flop'. I do not know exactly how a lens problem could be causing the 'mirror flop' but it seems so.
05-03-2012, 07:00 PM   #11
Site Supporter
Chaos_Realm's Avatar

Join Date: Feb 2011
Location: Melbourne, Australia
Photos: Gallery | Albums
Posts: 1,248
QuoteOriginally posted by Sloglass Quote
I finally found that the mirror flop condition seemed to become better after I removed and cleaned the contacts on the DAL 18-55 lens. After that I replaced the DAL lens with a DA 18-55 after cleaning the lens mount contacts again. I have shot over 100 pictures since replacing the lens an have not had a 'mirror flop'. I do not know exactly how a lens problem could be causing the 'mirror flop' but it seems so.
Hmm well at least it seems you have fixed it or atleast it has gone away for the time being. That said I am lost as to the exact cause.
05-04-2012, 05:06 AM   #12
wax
Forum Member




Join Date: Apr 2011
Location: Santiago
Photos: Gallery | Albums
Posts: 53
It seams itīs a voltage problem realted with the original battery(donīt know on generic ones), metering and lenses(flange). Using AAs with any AAs adapter should work fine for you. I even think camera system is more stable this way.
05-05-2012, 01:32 PM   #13
Junior Member




Join Date: Feb 2011
Location: California
Photos: Gallery | Albums
Posts: 30
Original Poster
QuoteOriginally posted by wax Quote
It seams itīs a voltage problem realted with the original battery(donīt know on generic ones), metering and lenses(flange). Using AAs with any AAs adapter should work fine for you. I even think camera system is more stable this way.
Though having a fully charged battery helped reduce the problem, the big improvement came with cleaning the lens mount electrical contacts and using a different lens. I also switched from a DAL lens to a DA lens. I suspect the metal base makes a better connection just because I haven't had the trouble since the change.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
battery, button, camera, clicking, k-r, kr, mirror, pentax k-r
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax product cycles Spodeworld Photographic Industry and Professionals 6 01-04-2012 08:49 PM
# of shutter cycles k-5? Unregistered Visitors' Center 4 08-04-2011 11:29 PM
K200d mirror cycles on its own - no image taken rae2 Pentax DSLR Discussion 12 11-01-2010 09:49 PM
how many shutter cycles are to many on a used slr mikejax19 Troubleshooting and Beginner Help 14 08-30-2010 09:34 AM
Studio kit... right stuff, wrong time. Buddha Jones Pentax Camera and Field Accessories 2 03-29-2009 03:58 PM



All times are GMT -7. The time now is 12:22 PM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top