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Forum: Pentax K-30 & K-50 01-05-2019, 09:21 AM  
K-50 / K-500 Aperture Solenoid fix (DIY with pics)
Posted By mattoak
Replies: 417
Views: 109,536
Thank you! I didn't know if these ones were reliable or not since they are not "brand new". I'll purchase one from ebay then and do the repair myself. Thanks
Forum: Pentax K-30 & K-50 01-04-2019, 09:06 AM  
K-50 / K-500 Aperture Solenoid fix (DIY with pics)
Posted By mattoak
Replies: 417
Views: 109,536
Unfortunately my sporadically used K-50 (once every couple weeks/months) has started to show signs of the aperture solenoid not working. I'm looking to take care of this as soon as possible and plan on just straight replacing the solenoid for the better quality one. I have two questions, one general and one for a previous poster (or anyone that knows).

1. I've read through all the posts and I feel like there is conflicting information regarding this so I'm hoping to clear it up. Will the solenoid from a MZ50 work as a direct replacement for the K-50, or does the polarity have to be reversed?

2. In the post from SteveDee that has a picture of the two side by side, where did the white solenoid, with the "E" (I assume it means Ensinger?) come from? Was it taken from another camera or did you purchase it individually?


On ebay I can buy a refurbed solenoid for $45, or I can buy a MZ50 for $15-$30. I have no problem taking apart the MZ to harvest the solenoid, as I figure its good practice anyway. I'm just trying to determine the best place to source one for relatively cheap.
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