[stevebrot]

What are the odds that if I were to buy THREE K70s for my school and ALL of them develop aperture block before 5000 shutter count? For me, the odds were 3\3. (100%) K70 =garbage!!!
(But you can't have my K1!)

It would be good if you could post the details for these three cameras, including age, diagnosis, remedy, and outcome on the reporting thread for the K-70. Assuming that all three were purchased together and failed about the same time, serial numbers might also be of interest.

K-70 Underexposed Photo Reports - PentaxForums.com

Thanks in advance.


Steve

[SharkyCA]

What are the odds that if I were to buy THREE K70s for my school and ALL of them develop aperture block before 5000 shutter count? For me, the odds were 3\3. (100%) K70 =garbage!!!
(But you can't have my K1!)

It would be good if you could post the details for these three cameras, including age, diagnosis, remedy, and outcome on the reporting thread for the K-70. Assuming that all three were purchased together and failed about the same time, serial numbers might also be of interest.

K-70 Underexposed Photo Reports - PentaxForums.com

Thanks in advance.


Steve

Sad to hear about your experience w/3 k-70's but I agree with Steve, "More details, were the cameras new or used? and were they still under warranty?"

My k-70 failed with this problem just shy of 5,000 images, but I love the camera!

[photogem]

I understood that he just guessed about what could happen:

"What are the odds that if I were to buy THREE K70s for my school...."

Correct me if I'm wrong but "if I were to buy" is not an actualized process but just in sheer theory!??!

[NS_Sailor]

Just got my K70 back after the same failure. Besides the Aperture Block there was also a failed resistor, I'm unsure if the resistor failed because of or caused the Aperture Block failure

[SharkyCA]

Just got my K70 back after the same failure. Besides the Aperture Block there was also a failed resistor, I'm unsure if the resistor failed because of or caused the Aperture Block failure

When my K-70 was in for repair they replaced the entire control block, that was a year ago! Fingers crossed NS_Sailor. https://www.pentaxforums.com/forums/members/85274-photogem/albums/13179-diap...ture124607.jpg

[reh321]

Sad to hear about your experience w/3 k-70's but I agree with Steve, "More details, were the cameras new or used? and were they still under warranty?"

My k-70 failed with this problem just shy of 5,000 images, but I love the camera!

This thing seems to depend more upon calendar age than upon shutter count.
How old was your camera when this problem first showed up?

[SharkyCA]

This thing seems to depend more upon calendar age than upon shutter count.
How old was your camera when this problem first showed up?

I originally purchase my K-70 around Sept 2017, sent in for repair approx April 2019 4955 shutter count, happy ever since getting it back!

Cheers

[NS_Sailor]

This thing seems to depend more upon calendar age than upon shutter count.
How old was your camera when this problem first showed up?

To muddy the waters a bit more mine failed just over 3 years with over 13000 clicks on the shutter

[SharkyCA]

To muddy the waters a bit more mine failed just over 3 years with over 13000 clicks on the shutter

Hard item to troubleshoot, random failures with electro mechanical components!

[reh321]

To muddy the waters a bit more mine failed just over 3 years with over 13000 clicks on the shutter

This problem seems to depend more on calendar time than on number of times used. Using a camera a lot actually seems to delay the onslaught of symptoms, so it may become worse and worse from now on.

[photogem]

Depends also on date of manufacture which you find out here:
Check Camera Shutter Count and Manufacture Date

Sharky's K-70 was most likely manufactured earlier in 2017.

The solenoid in my first repaired K-70 had a stronger holding force: Manufactured May 2017
The solenoid of my 2.nd repaired K70 was again better: Manufacturing Date July 2017

No solenoid (made in Japan) of pre-K30 Pentax bodies failed!


Usually with pre-December 2015 green China-Solenoids it went bad when not used for a longer time.

[reh321]

Depends also on date of manufacture which you find out here:
Check Camera Shutter Count and Manufacture Date

Sharky's K-70 was most likely manufactured earlier in 2017.

The solenoid in my first repaired K-70 had a stronger holding force: Manufactured May 2017
The solenoid of my 2.nd repaired K70 was again better: Manufacturing Date July 2017

No solenoid (made in Japan) of pre-K30 Pentax bodies failed!

Usually with pre-December 2015 green China-Solenoids it went bad when not used for a longer time.

I was aware that not being used was a problem with the K-30, so I made a point of using mine - even if I had no normal reason for doing so - because I knew that seems to extend useful life of the solenoid.
I powered mine with AA-batteries most of its life because I knew that seems to extend useful life of the solenoid.
Even with those measures, mine {date given as "2013:02:01"} began showing Dark Image Syndrome symptoms in late May 2017, and was totally failing by the time I purchased my KP on Black Friday 2018.
Incidentally, I purchased the K-30 in June 2015; price was $250 was KEH with shutter count of 3 - I guess they were already aware of the problem.

[SharkyCA]

Depends also on date of manufacture which you find out here:
Check Camera Shutter Count and Manufacture Date

Sharky's K-70 was most likely manufactured earlier in 2017.

The solenoid in my first repaired K-70 had a stronger holding force: Manufactured May 2017
The solenoid of my 2.nd repaired K70 was again better: Manufacturing Date July 2017

No solenoid (made in Japan) of pre-K30 Pentax bodies failed!


Usually with pre-December 2015 green China-Solenoids it went bad when not used for a longer time.

I was aware that not being used was a problem with the K-30, so I made a point of using mine - even if I had no normal reason for doing so - because I knew that seems to extend useful life of the solenoid.
I powered mine with AA-batteries most of its life because I knew that seems to extend useful life of the solenoid.
Even with those measures, mine {date given as "2013:02:01"} began showing Dark Image Syndrome symptoms in late May 2017, and was totally failing by the time I purchased my KP on Black Friday 2018.

Why speculate when you can ask??

[reh321]

Why speculate when you can ask??

I made statements of fact.
I am not sure where you see "speculation".

[photogem]

Why speculate when you can ask??

I forgot that you got back your diaphragm control block. So it was manufactured 7/2017 and installed 8/2017.

Shows how high the demand for the K70 must have been, as you bought it 9/2017.

Anyway reh321's comparison with his K-30 are of no value compared to the K-70 because the K30 and K50 up to Dec.2015 were really badly hit with the solenoid problem.

I made statements of fact.
I am not sure where you see "speculation".

I think he meant more my speculation.
But your statements are just kind of facts for your K30 and yet, you never opened it, never inspected the solenoid allthough you are an engineer with experience.
But your statements about the solenoid in the K70 are not at all facts but speculation.