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**niceshot** · 07-05-2016, 04:15 PM

OK update, the shutter mechanism controls itself. In other words it has two powerful electronic magnets the open and shut the shutter. one shutter opens and the other on follows it. So the mirror motor controls the mirror and the aperture and that magnet we were all looking at triggers all of it. so if you have dark frames it means your shutter is going.T he good news is it is a cheap part. Ithink one of the rubber dampers fell into it and jammed it so I am in the mood to rebuild this beast also. OK further edit I had to rebuild this shutter mechanism and exercise the the daylights out of it.

Last edited by niceshot; 07-05-2016 at 05:39 PM.

**niceshot** · 07-05-2016, 07:00 PM - **1 Like**

ok here are some shots of a shutter rebuild the first picture is how it shouldn't look, the rest are progress and the last is finished

IgorZ · 07-05-2016, 08:19 PM

Originally posted by niceshot

ok here are some shots of a shutter rebuild the first picture is how it shouldn't look, the rest are progress and the last is finished

Thanks for posting this. No more black frames I hope?

ase · 07-06-2016, 02:23 AM

Does anybody know the failure rate? 1 over 100, 1000, 10000, etc? Thanks

Nuno Almeida · 07-06-2016, 03:33 AM

Originally posted by niceshot

ok here are some shots of a shutter rebuild the first picture is how it shouldn't look, the rest are progress and the last is finished

Good job, and how are the results coming?

**niceshot** · 07-08-2016, 06:32 PM

Ok I have rebuilt the aperture control block today and found out what cause the problem. their is a spring inside the aperture control box that becomes un sprung and causes it not to engage. I have also replace the mirror motor

IgorZ · 07-08-2016, 08:43 PM

Originally posted by niceshot

Ok I have rebuilt the aperture control block today and found out what cause the problem. their is a spring inside the aperture control box that becomes un sprung and causes it not to engage. I have also replace the mirror motor

Does it work properly now?

**JoseFF** · 07-10-2016, 07:59 AM

Originally posted by niceshot

Ok I have rebuilt the aperture control block today and found out what cause the problem. their is a spring inside the aperture control box that becomes un sprung and causes it not to engage. I have also replace the mirror motor

You mean that spring gets off its hook on one end? There is one of the Russians who said to have solved the problem by relocating a spring. Here is what he said:
"moved the magnet down in the slot and adjusted the spring on a lever that is circled in white in the photo above. He said that the spring should be in a little groove at the end of the L-shaped lever"
You think you might be talking about the same spring?

**niceshot** · 07-10-2016, 08:08 AM

Originally posted by JoseFF

You mean that spring gets off its hook on one end? There is one of the Russians who said to have solved the problem by relocating a spring. Here is what he said:
"moved the magnet down in the slot and adjusted the spring on a lever that is circled in white in the photo above. He said that the spring should be in a little groove at the end of the L-shaped lever"
You think you might be talking about the same spring?

yes the spring inside the aperture block . but the only way to get to it is to completely dissemblance the camera

also whilist there replace the mirror motor and the shutter block for good measure.

**JoseFF** · 07-10-2016, 08:36 AM

Originally posted by niceshot

yes the spring inside the aperture block . but the only way to get to it is to completely dissemblance the camera

also whilist there replace the mirror motor and the shutter block for good measure.

What did you do with the spring? Replace it? Or relocate it?

**niceshot** · 07-10-2016, 08:50 AM

Originally posted by JoseFF

What did you do with the spring? Replace it? Or relocate it?

Relocate it , what is does is engage the cogged gear and locks it up , the test is if you push the lever and it doent stop the white geat from turning then the spring isn't strong enough

**JoseFF** · 07-10-2016, 08:59 AM

Originally posted by niceshot

Relocate it , what is does is engage the cogged gear and locks it up , the test is if you push the lever and it doent stop the white geat from turning then the spring isn't strong enough

Could you show a picture of it?

**niceshot** · 07-10-2016, 09:41 AM

yes i will here https://www.pentaxforums.com/forums/189-repairs-warranty-service/325334-k-30-k-50-ap

ludpi · 07-10-2016, 11:40 PM

Hello
I put this "solution" in another thread, I hope that someone will help.
I too have after just over two years occurred the same problem.
I read in Spain pentaxforum of a user who discovered that using AA batteries go well exposed photos from the first shot.
I have an adapter for AA batteries, I've tried and so far goes perfectly.
As you can read, the problem is typical of Pentax k30, k50 and k500.
I hope it helps.
Greetings.

https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/264514-pentax-k-30-p...ng-dark-2.html
Problema con exposimetro K30 - Pentaxeros.com

**niceshot** · 07-11-2016, 01:58 AM

Originally posted by ludpi

Hello
I put this "solution" in another thread, I hope that someone will help.
I too have after just over two years occurred the same problem.
I read in Spain pentaxforum of a user who discovered that using AA batteries go well exposed photos from the first shot.
I have an adapter for AA batteries, I've tried and so far goes perfectly.
As you can read, the problem is typical of Pentax k30, k50 and k500.
I hope it helps.
Greetings.

https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/264514-pentax-k-30-p...ng-dark-2.html
Problema con exposimetro K30 - Pentaxeros.com

//// Yes that might help it the beginning but in the end, the camera will still fail. there are two problems one the aperture block motor gets tired, 2 the shutter mechanism fails to fire or gets jammed as it did on mine.

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07-05-2016, 04:15 PM	#151
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	OK update, the shutter mechanism controls itself. In other words it has two powerful electronic magnets the open and shut the shutter. one shutter opens and the other on follows it. So the mirror motor controls the mirror and the aperture and that magnet we were all looking at triggers all of it. so if you have dark frames it means your shutter is going.T he good news is it is a cheap part. Ithink one of the rubber dampers fell into it and jammed it so I am in the mood to rebuild this beast also. OK further edit I had to rebuild this shutter mechanism and exercise the the daylights out of it. Last edited by niceshot; 07-05-2016 at 05:39 PM.

07-05-2016, 08:19 PM	#153
IgorZ Veteran Member Join Date: Aug 2015 Location: Ottawa Posts: 1,735	Originally posted by niceshot ok here are some shots of a shutter rebuild the first picture is how it shouldn't look, the rest are progress and the last is finished Thanks for posting this. No more black frames I hope?

07-06-2016, 02:23 AM	#154
ase New Member Join Date: Jul 2016 Posts: 6	Does anybody know the failure rate? 1 over 100, 1000, 10000, etc? Thanks

07-06-2016, 03:33 AM	#155
Nuno Almeida Senior Member Join Date: Sep 2014 Location: Aveiro Posts: 179	Originally posted by niceshot ok here are some shots of a shutter rebuild the first picture is how it shouldn't look, the rest are progress and the last is finished Good job, and how are the results coming?

07-08-2016, 06:32 PM	#156
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	Ok I have rebuilt the aperture control block today and found out what cause the problem. their is a spring inside the aperture control box that becomes un sprung and causes it not to engage. I have also replace the mirror motor

07-08-2016, 08:43 PM	#157
IgorZ Veteran Member Join Date: Aug 2015 Location: Ottawa Posts: 1,735	Originally posted by niceshot Ok I have rebuilt the aperture control block today and found out what cause the problem. their is a spring inside the aperture control box that becomes un sprung and causes it not to engage. I have also replace the mirror motor Does it work properly now?

07-10-2016, 07:59 AM	#158
JoseFF Site Supporter Join Date: Feb 2016 Posts: 194	Originally posted by niceshot Ok I have rebuilt the aperture control block today and found out what cause the problem. their is a spring inside the aperture control box that becomes un sprung and causes it not to engage. I have also replace the mirror motor You mean that spring gets off its hook on one end? There is one of the Russians who said to have solved the problem by relocating a spring. Here is what he said: "moved the magnet down in the slot and adjusted the spring on a lever that is circled in white in the photo above. He said that the spring should be in a little groove at the end of the L-shaped lever" You think you might be talking about the same spring?

07-10-2016, 08:08 AM	#159
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	Originally posted by JoseFF You mean that spring gets off its hook on one end? There is one of the Russians who said to have solved the problem by relocating a spring. Here is what he said: "moved the magnet down in the slot and adjusted the spring on a lever that is circled in white in the photo above. He said that the spring should be in a little groove at the end of the L-shaped lever" You think you might be talking about the same spring? yes the spring inside the aperture block . but the only way to get to it is to completely dissemblance the camera also whilist there replace the mirror motor and the shutter block for good measure.

07-10-2016, 08:36 AM	#160
JoseFF Site Supporter Join Date: Feb 2016 Posts: 194	Originally posted by niceshot yes the spring inside the aperture block . but the only way to get to it is to completely dissemblance the camera also whilist there replace the mirror motor and the shutter block for good measure. What did you do with the spring? Replace it? Or relocate it?

07-10-2016, 08:50 AM	#161
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	Originally posted by JoseFF What did you do with the spring? Replace it? Or relocate it? Relocate it , what is does is engage the cogged gear and locks it up , the test is if you push the lever and it doent stop the white geat from turning then the spring isn't strong enough

07-10-2016, 08:59 AM	#162
JoseFF Site Supporter Join Date: Feb 2016 Posts: 194	Originally posted by niceshot Relocate it , what is does is engage the cogged gear and locks it up , the test is if you push the lever and it doent stop the white geat from turning then the spring isn't strong enough Could you show a picture of it?

07-10-2016, 09:41 AM	#163
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	yes i will here https://www.pentaxforums.com/forums/189-repairs-warranty-service/325334-k-30-k-50-ap

07-10-2016, 11:40 PM	#164
ludpi New Member Join Date: Feb 2016 Posts: 4	Hello I put this "solution" in another thread, I hope that someone will help. I too have after just over two years occurred the same problem. I read in Spain pentaxforum of a user who discovered that using AA batteries go well exposed photos from the first shot. I have an adapter for AA batteries, I've tried and so far goes perfectly. As you can read, the problem is typical of Pentax k30, k50 and k500. I hope it helps. Greetings. https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/264514-pentax-k-30-p...ng-dark-2.html Problema con exposimetro K30 - Pentaxeros.com

07-11-2016, 01:58 AM	#165
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	Originally posted by ludpi Hello I put this "solution" in another thread, I hope that someone will help. I too have after just over two years occurred the same problem. I read in Spain pentaxforum of a user who discovered that using AA batteries go well exposed photos from the first shot. I have an adapter for AA batteries, I've tried and so far goes perfectly. As you can read, the problem is typical of Pentax k30, k50 and k500. I hope it helps. Greetings. https://www.pentaxforums.com/forums/151-pentax-k-30-k-50/264514-pentax-k-30-p...ng-dark-2.html Problema con exposimetro K30 - Pentaxeros.com //// Yes that might help it the beginning but in the end, the camera will still fail. there are two problems one the aperture block motor gets tired, 2 the shutter mechanism fails to fire or gets jammed as it did on mine.

K-30 / K-50 Aperture Block Failue - Repair Solution available

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