K-70 Sensor went dark after a few minute video capture test

SteelFalcon · 11-22-2021, 04:39 PM

After testing my relatively new K-70, the sensor went dark and the unite was not longer useable. Have I burnt the solenoid?

bertwert · 11-22-2021, 04:43 PM

Wouldn't be a solenoid failure - that doesn't affect the sensor.

Are you saying that the sensor readout is black and nothing is seen on the screen in live view? Are the pictures turning out black as well?

Try a factory reset on the camera, could fix some sort of malignant settings or bug.

**ramseybuckeye** · 11-22-2021, 04:53 PM

Originally posted by SteelFalcon

After testing my relatively new K-70, the sensor went dark and the unite was not longer useable. Have I burnt the solenoid?

What do you mean by the sensor went dark?

Adam · 11-22-2021, 05:50 PM

Did it overheat?

Also, I know you mentioned video, but if it was just a long exposure then the slow shutter speed noise reduction option could lock up the camera for the same duration as the exposure.

Adam
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**photogem** · 11-23-2021, 03:32 AM

Originally posted by SteelFalcon

After testing my relatively new K-70, the sensor went dark and the unite was not longer useable. Have I burnt the solenoid?

The solenoid can't get burned, what happens is that remains stuck.

That happens particular often after a longer period of no use!

The result are dark photos, almost black.

But often in Liveview-mode for a time photos seem fine.

All that has nothing to do with the sensor itself.
And yet, the sensor can get burned after intensive video-use. But usually the Pentax switches off before to protect.
So most unlikely anything happened because of using in in video-mode.

**Michail_P** · 11-23-2021, 05:43 AM

Hope you find a solution. The K-70 is a great body, but not so good for video work....

**ehrwien** · 11-27-2021, 01:46 PM

Could it be that just the screen on the back went black? You can get it back on by pressing the INFO button.

Or the battery went too low?

SteelFalcon · 12-06-2021, 06:13 AM

Thank you very much for your responses. The screen is quite clear when the settings are displayed. It is as clear when browsing through the settings. However, the captured photos are far too dark to even recognize anything captured. I originally thought it doesn't capture anything until I tried to open the files from a computer. Someone said a factory reset might do the trick but I don't know how it's done on the K-70. But in case it's condition remains the same, I'd still be open for more suggestions.
I fully agree that this K-70 like any other Pentax is also a great body. It must have simply been a misfortune that I got this problem with it. Hence, any suggestion or recommendation would be so much welcome.

bertwert · 12-06-2021, 06:20 AM

Originally posted by SteelFalcon

Someone said a factory reset might do the trick but I don't know how it's done on the K-70.

Go into the menus, and according to the K-70 manual (pg 33) it's on the spanner page number 5, called "Reset".

**photogem** · 12-06-2021, 12:19 PM

Originally posted by SteelFalcon

Thank you very much for your responses. The screen is quite clear when the settings are displayed. It is as clear when browsing through the settings. However, the captured photos are far too dark to even recognize anything captured. I originally thought it doesn't capture anything until I tried to open the files from a computer. Someone said a factory reset might do the trick but I don't know how it's done on the K-70. But in case it's condition remains the same, I'd still be open for more suggestions.
I fully agree that this K-70 like any other Pentax is also a great body. It must have simply been a misfortune that I got this problem with it. Hence, any suggestion or recommendation would be so much welcome.

Most likely it is ABF, i.e. a stuck solenoid.
Apply:
How to detect aperture-block failure/stuck solenoid on Pentax K-70 - PentaxForums.com
and then, if clear, apply:
Tutorial/Repair Pentax K-70 with aperture-problem: Exchange solenoid - PentaxForums.com

A reset won't do anything!

11-22-2021, 04:39 PM	#1
SteelFalcon New Member Join Date: Dec 2019 Location: Quezon City Posts: 2	K-70 Sensor went dark after a few minute video capture test After testing my relatively new K-70, the sensor went dark and the unite was not longer useable. Have I burnt the solenoid?

12-06-2021, 06:13 AM	#8
SteelFalcon New Member Join Date: Dec 2019 Location: Quezon City Posts: 2 Original Poster	Thank you very much for the tips...however... Thank you very much for your responses. The screen is quite clear when the settings are displayed. It is as clear when browsing through the settings. However, the captured photos are far too dark to even recognize anything captured. I originally thought it doesn't capture anything until I tried to open the files from a computer. Someone said a factory reset might do the trick but I don't know how it's done on the K-70. But in case it's condition remains the same, I'd still be open for more suggestions. I fully agree that this K-70 like any other Pentax is also a great body. It must have simply been a misfortune that I got this problem with it. Hence, any suggestion or recommendation would be so much welcome.

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11-22-2021, 04:43 PM	#2
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Wouldn't be a solenoid failure - that doesn't affect the sensor. Are you saying that the sensor readout is black and nothing is seen on the screen in live view? Are the pictures turning out black as well? Try a factory reset on the camera, could fix some sort of malignant settings or bug.

11-22-2021, 04:53 PM	#3
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,296	Originally posted by SteelFalcon After testing my relatively new K-70, the sensor went dark and the unite was not longer useable. Have I burnt the solenoid? What do you mean by the sensor went dark?

11-22-2021, 05:50 PM	#4
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	Did it overheat? Also, I know you mentioned video, but if it was just a long exposure then the slow shutter speed noise reduction option could lock up the camera for the same duration as the exposure. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

11-23-2021, 03:32 AM	#5
photogem Site Supporter Join Date: Apr 2015 Posts: 3,525	Originally posted by SteelFalcon After testing my relatively new K-70, the sensor went dark and the unite was not longer useable. Have I burnt the solenoid? The solenoid can't get burned, what happens is that remains stuck. That happens particular often after a longer period of no use! The result are dark photos, almost black. But often in Liveview-mode for a time photos seem fine. All that has nothing to do with the sensor itself. And yet, the sensor can get burned after intensive video-use. But usually the Pentax switches off before to protect. So most unlikely anything happened because of using in in video-mode.

11-23-2021, 05:43 AM	#6
Michail_P Site Supporter Join Date: Nov 2019 Location: Kalymnos Photos: Gallery Posts: 3,006	Hope you find a solution. The K-70 is a great body, but not so good for video work....

11-27-2021, 01:46 PM	#7
ehrwien Site Supporter Join Date: May 2016 Posts: 2,784	Could it be that just the screen on the back went black? You can get it back on by pressing the INFO button. Or the battery went too low?

12-06-2021, 06:20 AM	#9
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Originally posted by SteelFalcon Someone said a factory reset might do the trick but I don't know how it's done on the K-70. Go into the menus, and according to the K-70 manual (pg 33) it's on the spanner page number 5, called "Reset".

12-06-2021, 12:19 PM	#10
photogem Site Supporter Join Date: Apr 2015 Posts: 3,525	Originally posted by SteelFalcon Thank you very much for your responses. The screen is quite clear when the settings are displayed. It is as clear when browsing through the settings. However, the captured photos are far too dark to even recognize anything captured. I originally thought it doesn't capture anything until I tried to open the files from a computer. Someone said a factory reset might do the trick but I don't know how it's done on the K-70. But in case it's condition remains the same, I'd still be open for more suggestions. I fully agree that this K-70 like any other Pentax is also a great body. It must have simply been a misfortune that I got this problem with it. Hence, any suggestion or recommendation would be so much welcome. Most likely it is ABF, i.e. a stuck solenoid. Apply: How to detect aperture-block failure/stuck solenoid on Pentax K-70 - PentaxForums.com and then, if clear, apply: Tutorial/Repair Pentax K-70 with aperture-problem: Exchange solenoid - PentaxForums.com A reset won't do anything!