How to fix Pentax K-30 (K-50) aperture solenoid (Black pictures problem)

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Ricoh, after Hoya, to reduce costs on units for Pentax cameras, switched to other component vendors out of Japan.
Eventually, K-30 K-50 K-70 K-500 K-S1 K-S2 models (designed with plunger type aperture interrupter) got affected after a new Chinese made solenoid utilized which fails due to coil copper/alloy amount, surface finish and plastic housing quality issues.
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Опубликовано:

1 фев 2020

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Комментарии : 78

@graememurray964 3 года назад

HI. Had this problem today after not using my K50 for a few months. Was a bit scared to open it up so foun another tip online. Turn on burst mode and take a load of shots. It should free up the aperture. Problem solved!!

@dirkbanzhaf234 3 года назад

True, I just now had this problem, took a 100 shots and the fotos are like before. Not open the case, it is to difficult, when damaging some stuff!

@Julien1211 3 года назад

Very nice advice! I was just before opening my K50 before reading your comment. I took a load of shots and at a certain point the acoustic changed and the aperture was fixed. Did the Problem reoccur with your camera? Thanks for your good advice, you saved me a lot of time to completely open my K50 :-)

@dirkbanzhaf234 3 года назад

The problem with cleaning the aperture solenoid by taking a lot of shots is, that it does not last long. After some few hours the fotos are dark again. One have to do the procedure again and again. So maybe opening the case and cleaning the thing is a long lasting solution.

@LeftyPilon 3 года назад

Thanks for this post. Just did this and problem solved! No $ fix!!

@prasadmvp 2 года назад

Thanks a lot mate.

@anurangagunaratne331 3 года назад

Thank you very much! I was able to fix my camera by following your steps.

@user-zq7pg7ty4i 10 месяцев назад

Yay! Another K50 saved from the bin. If it sticks again I'll buy a new solenoid but for now it is working. Thanks for making this video!

@jlou65535 3 месяца назад

You saved my K30 ! Thanks a lot !

@eduardocorrea4913 2 года назад

Excelencia en tu trabajo, muchas gracias x compartir brother.

@romaing3699 Год назад

Hooo man, you save my life and my camera! Very thanks to you !! Shame on Pentax to not considered this problem like engineering fault...!

@Xavier-pw3kz 3 месяца назад

Siguiendo las instrucciones de tu video he logrado hoy salvar mi K-500. Mil gracias por compartir la solución al problema, que pensé que la llevaría a un uso decorativo.

@yannsax4193 2 года назад

Hey, Thks a lot for your vidéo. I spent 3h to fix it and My k30 works great now. Biig UP ! :)

@MrVaykadji 2 года назад

Thanks, it was very useful. I "scraped" the little jumper with what I had at home, which is 120 sand paper, for a few minutes, and it's less used than yours but seems to work fine anyway. But warning: you should be very careful when taking off the front cover, as I broke a little plastic handle for the screw right next to "K50". Well, it doesn't prevent it from working or anything, but I'm a little sad. Anyway, even with that mishap, I just saved tons of money, hoping it will last! NB: my K50 was 5 years old, bought it in 2016. Price announced by the repairman was 250€, roughly 300$ (sent to and fixed by Pentax France).

@renaudnormand3246 9 месяцев назад

120 sand paper... heavy ! More like 600-1000 would be a good first bet??

@MrVaykadji 9 месяцев назад

@@renaudnormand3246 well it's been working for 2 years now, so I don't know what to tell you :)

@renaudnormand3246 9 месяцев назад

@@MrVaykadji perfect! I will go with this.

@jareinalvarez8186 Год назад

Muchas gracias, es el vídeo más detallado que encontré para reparar mi pentax k50. Muchas gracias por compartirlo

@jesusalbertobaltazarramire9968 Год назад

hola amigo yo tengo una duda cuanto tiempo hay que lijarlo o como tiene que quedar?

@jand4629 4 года назад

greate video, thank you

@hobbycrosser8218 5 месяцев назад

Danke für dieses sehr gut erklärte Video. Ich habe gerade meine Pentax danach repariert. Es hat sehr gut funktioniert. Danke sehr.

@ChristianRodriguez-tv4ct 3 года назад

I had this issue as well in 2017. Wish this video had been around, reverse engineering and fixing was a problem! Eventually, the problem returned for me. The part re-magnetizes after a while. :( Happened to two K50 bodies.

@soi-luna3087 3 года назад

I agree, had quite a few Pentax repaired like this and the problem returned. If filing was stronger, the opposite happened: the plunger could not return and pics were all white: Overexposure

@ChristianRodriguez-tv4ct 3 года назад

@@soi-luna3087 thank you for the comment, it reinforces my thoughts on this. It is such a shame because it was my first entry into DSLRs and now I'm invested in lenses. :( There are ways pentax could have fixed this, though, with different alloys (like in other bodies) or even a built in degausser.

@davidstorm4015 2 года назад

You can repair using a Japanese made solenoid, these can be bought on ebay or they can be removed from older Pentax bodies such as K100, or K-x

@DAN9I 2 года назад

Ну значед подпили ещё

@nerdMike 3 года назад

What about weather sealing after the entire process?

@nachocelis9683 2 года назад

La cámara tiene algún tipo de batería interna?

@bojackh5812 2 года назад

Do i have to use a flat screwdriver on a philips screw?

@BIRRAIO978 3 месяца назад

Grazie mille!

@simonsutherland814 Год назад

Great video thank you I replaced the solanoid and still getting dark pix. Anything else you can recomend? Cheers

@davidf.3565 2 года назад

Thanks you ! With your video, I have repared my loved K-30 camera. I added WD40 on the solenoid to be sure. Thanks again !

@vladlensokolov2028 4 года назад

Super!

@bobjohnson9597 Год назад

worked great however when removing the covers I noticed a paper thin black metal washer the same size as the wi-fi button that fell out. it would remind you of an o ring except metal, do you know where it belongs?

@zoomkl9136 3 года назад

Why can't you add some soldering iron in between the gap of the plunger so that it won't go and stick to the magnet at the other end I mean in the bottom space of U shape? Thought s are highly appreciated as my K70 started experiencing the same issue

@bobjohnson9597 Год назад

My Pentax Ks2 fix was a little less complicated. I simply use a Takumar 28mm lens with a manual aperture-focus as my fun hobby camera. A little more of a challenge and much more fun and usually I shoot in B&W, for times I must have Auto focus I use another camera that has great video also. But for Fun slower relaxing shoots its my Pentax all the way.

@davidmckenzie7190 8 месяцев назад

hello, How much metal are you taking off the solenoid when you are fileing it.. Just curious. thanks for your video, this going to help a lot of people with this problem.

@arpi0670 2 года назад

Un grand merci pour ce tutoriel, j'au remis en état de fonctionnement mon Pentax K50 C'est tout simplement magique d'avoir pu le réparer soi même grâce à cette video Bravo 🙂

@armijodh 3 года назад

Hi!, Thnks for video, i have a question, this repair is for manual and automatic focus? Because i have to pressing a metal object inside, where lens is placed

@5ar30 3 года назад

Hi, no this is not an autofocus repair, This fix is for aperture problem (black picture problem)

@dorfschmidt4833 4 месяца назад

The solenoid has worked for years, the reason for the malfunction must be something else, I suspect that the geometry of the solenoid has changed or the position of the mounting of the solenoid. All my solenoids look like new, there is no wear.

@dorfschmidt4833 4 месяца назад

But why did it work for years before without any tweaking ?

@piworower 2 года назад

i wish you would say what you are doing and not this awful music. great camera work btw.

@soi-luna3087 3 года назад

Not a good idea to do the sanding filing job. The solenoid often makes other problems. It is better to use a Japan solenoid from a DSLR such as the K100D or Kx

@videom 4 года назад

how much filing should you use? Not sure when i"m done filing.

@5ar30 3 года назад

I can't say exactly how much. The metal part must move easily without resistance through the plastic part.

@erikplanken2901 3 года назад

Just cleaning this part was sufficient enough for my camera. Thanks for helping with this video!

@sherrylangland3707 3 года назад

Did you unscrew the solenoid and take it out to clean it?

@erikplanken2901 3 года назад

@@sherrylangland3707 1 tiny screw on right top of the solenoid. Not easy to remove but otherwise you can't remove the U-shaped part. I sanded it all-around with 800 grid sandingpaper, spayed it with contactspray for electronic parts. No filing needed. Follow instructions, should be sufficient. Use appropriate tools! Good luck!

@erikplanken2901 3 года назад

Try to find a screwdriver with a handle that provides you enough grip. Skip the flathead screwdriver, it might slip and damage other components. The screw fits very tight, force is needed to loosen it. A little prayer might help.....

@igotafastcar 3 года назад

Thank you Erik, YOU JUST SAVED 100usd to me! Cleaning solved my issue!

@erikplanken2901 3 года назад

@@igotafastcar congratulations! You're a dare-devil too! A brand new body would cost you an arm and a leg, now you are a member of the DIY champions!

@sherrylangland3707 3 года назад

I'm having a hard time loosening the tiny screw that holds the solenoid in. How did you get it loosened? I'm worried I'm stripping the screw head when I try to loosen it.

@erikplanken2901 3 года назад

Screw is fastened with a lacker. Use a hobbyknife to remove some.

@sherrylangland3707 3 года назад

I did. I still can't loosen the screw. With the angle it's at, I can't get the screwdriver to lock in enough to turn it. I've tried a Phillips (00) and a small flathead.

@5ar30 3 года назад

I also have a problem with unscrewing. I used a flat screwdriver. Unscrewing the screw is PITA. Take a look at this video and it may be a little clearer. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7g_xMrbykr8.html

@piotrklosowicz7630 3 года назад

Fajny patent z tym styropianem! {celowo piszę po polsku!}

@kirmu409 11 месяцев назад

What is the purpose of grinding that part? Is there another solutions to make it work again?

@dorfschmidt4833 4 месяца назад

@kirmu409 4 месяца назад

@@dorfschmidt4833 Okay. Anyway i did this same operation to my solenoid and i got the pentax work like a new again.

@firebeats2649 Год назад

is it the same for pentax k10d ?

@misio87 Месяц назад

I'm certain that k10 didn't have this issue.

@brunomarsiglio1708 3 года назад

Shame! After twenty years, Pentax has not yet learned how to properly build a solenoid dedicated to photographic mechanics.

@davidstorm4015 2 года назад

Pentax don't build the solenoids, they are bought in as pre-made parts. The ones that fail are Chinese, the ones that last well are Japanese

@tomsun3159 Год назад

Lets start with the criticism. First point well organized workspace But then the things turned worse Wrong tools (not the proper screw driver JIS-type) Wrong approach in repair, the surface coating of the magnet is not just for optical reasons. The filing method destroys the surface protection. Yes the method will work for limited time (e.g. for selling the "repaired" item) but not for more. The problem is to get the "proper" solenoid as it is discontinued, some older types of Pentax have this needed solenoid installed and can act as a donator. If the solenoid is white and has 4 connectors, than you have a good chance to get the right one. Nearly all the others blue and green usually have the WRONG electrical and physical properties, and are made from the WRONG material NEVERTHELESS what the seller promise.

@vanesawhite4378 Год назад

Hi, trying to find something that can help me fix a Pentax K10D which was stored away and hardly used. Will not turn on but show a blinking battery indicator despite having a fully charged battery or external AC adapter plugged on. I under stand from the web an internal battery?! Don't wish to throw it awsy!