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Forum: Pentax K-30 & K-50 02-24-2017, 07:48 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
I performed the change of the solenoid in my ill K-30. I replaced it with one pulled from another Pentax camera.
Now my K-30 works like this:
  • In the continuous mode (Lo or Hi) and shooting continuously in the single mode at fast speeds (1/8 and up) it makes a series of pictures where always the first one is underexposed and the rest are satisfactory no mattering how long the series is.

  • In the single mode at speeds below 1/8 all shots are underexposed.

What do you think? If I look inside the lens when shooting, I see clearly the diaphragm closing down completely in all shots. How come they are differently exposed if the speed and opening are the same? The Exif shows the same data for all of them...



Forum: Pentax K-30 & K-50 02-21-2017, 06:27 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
I did several shooting series at lower speeds (1/8 sec) looking inside the lens to watch the opening and guess what...I could not see it stopping down any of the times, I clearly saw it closing completely but the pictures were the same: First one dark and the rest Ok. The data of the pictures indicated same aperture (5.6) and same speed (1/8 sec) for all of them. Now I understand even less... (I worked in manual mode)

---------- Post added 02-21-17 at 06:30 PM ----------


Hi Niceshot, How have you been? Are you referring to the SD Card door?
Forum: Pentax K-30 & K-50 02-19-2017, 02:34 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
I performed the change of the solenoid in my ill K-30. I replaced it with one pulled from another Pentax camera.
Now my K-30 works like this:
  • In the continuous mode (Lo or Hi) and shooting continuously in the single mode at fast speeds (1/50 and up) it makes a series of pictures where always the first one is underexposed and the rest are satisfactory no mattering how long the series is.

  • In the single mode at speeds below 1/50 all shots are underexposed.

Does anyone of you guys have an explanation for this?
Forum: Monthly Photo Contests 01-31-2017, 06:48 PM  
Just a Sunset
Posted By JoseFF
Replies: 0
Views: 389
Dramatically beautiful to me...
Forum: Pentax K-30 & K-50 11-13-2016, 08:50 AM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
Hello Alberto, Did you read in the document that the solenoid was dirty? Could you tell me where exactly? Thanks in advance!!
Forum: Pentax K-30 & K-50 10-16-2016, 04:25 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
Thanks athlonus, I already bought a dead *ist D L to do the replacement in my "sick" K-30.
Forum: Pentax K-30 & K-50 10-16-2016, 08:35 AM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
Thank you, Do *ist models have one or two solenoids?
Forum: Pentax K-30 & K-50 10-15-2016, 11:50 AM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
Could you please tell us what old pentax camera models use the exact solenoid that could replace the faulty one in K-30 and K-50?
Forum: Post Your Photos! 09-30-2016, 05:26 PM  
Cityscape Sunset
Posted By JoseFF
Replies: 1
Views: 374
What do you see?
Forum: Pentax K-30 & K-50 08-17-2016, 07:32 AM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
Scintilla, Please keep us posted on the evolution of your case. Very interesting
Thanks!
Forum: Pentax K-30 & K-50 07-26-2016, 12:26 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
That could let us jump to the conclusion that changing or repairing the solenoid will fix the problem...
Forum: Repairs and Warranty Service 07-25-2016, 04:41 PM  
K-30/ K-50 Aperture DIY Repair
Posted By JoseFF
Replies: 25
Views: 8,330
Hi richandfleur have gone ahead with your investigation? What have you found out?
Forum: Pentax K-30 & K-50 07-23-2016, 03:30 PM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
Can you please post the repair report?
Forum: Pentax K-30 & K-50 07-23-2016, 08:43 AM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
You could say so... but my poll is directed to find out if there is a relationship between the two issues. The result should let us know how many of the cameras that presented issue number 1 (Aperture failure) have also presented issue number 2.
My K-30 at the moment presents only number 1, so far nothing indicates symptoms of issue number 2. My fingers are crossed !:)!
Forum: Pentax K-30 & K-50 07-23-2016, 08:32 AM  
Survey with shutter count and aperture block or shutter failure.
Posted By JoseFF
Replies: 256
Views: 32,110
Adam, In your opinion, which are examples of flagship bodies at that stage at the present moment?
Forum: Pentax K-30 & K-50 07-22-2016, 12:13 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
Those of you who have had this kind of problems with your K30/50...please click on the link to answer the poll :)

https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/325832-poll-establis...re-issues.html
Forum: Pentax K-30 & K-50 07-21-2016, 03:53 PM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
Thanks Adam for the advice :)
Forum: Pentax K-30 & K-50 07-21-2016, 08:14 AM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
So far, no significant cases of failure have been reported... Only one out of eleven.

Looking forward to see more answers...

Thanks to those who have reported !:)!
Forum: Pentax K-30 & K-50 07-17-2016, 08:55 AM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
This to bring to the front the already started poll to establish if failures mentioned in thread title are related (One triggering the other)
Please click on the link below to answer the poll. Thanks :):)

https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/325832-poll-establis...re-issues.html
Forum: Pentax DSLR Discussion 07-16-2016, 11:54 AM  
Do you save SD cards when filled?
Posted By JoseFF
Replies: 43
Views: 2,811
There are so many ways to do things right! :lol::lol:
Forum: Pentax K-30 & K-50 07-16-2016, 07:00 AM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
Did you get it fixed before you sell it?
Forum: Pentax K-30 & K-50 07-14-2016, 07:45 AM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
Yes sir it is, this is aimed only to establish if there is a connection between the two issues, it is to say: one triggering the other
Thks
Forum: Pentax K-30 & K-50 07-14-2016, 07:02 AM  
Poll to establish relationship of K-30/50 frequent failure issues
Posted By JoseFF
Replies: 54
Views: 6,566
The purpose of this poll is to try to find out how many of the K-30/50 that have had aperture block failure have also developed shutter block failure. The results will help establish whether both issues are related or not and if the aperture block failure represents the first stage of a bigger problem.

Please answer the following questions with either a Yes or a No:

1.- Did your K-30/50 have aperture block failure?
2.- Did your K-30/50 have shutter block failure?
3.- In case you have answered Yes to the above two questions, was the aperture block failure prior to the shutter block failure?


Thanks in advance to all participants
Forum: Pentax K-30 & K-50 07-13-2016, 07:27 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
Thank you niceshot, looking forward to see it
Forum: Pentax K-30 & K-50 07-13-2016, 12:51 PM  
K-30 / K-50 Aperture Block Failue - Repair Solution available
Posted By JoseFF
Replies: 870
Views: 140,798
No, but just in case my aperture problems derive to a shutter issue...
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