Meet the Pentax K-50: An Entry Level DSLR Worth Checking
Amazon.com : Pentax K-50 16MP Digital SLR Camera with 3-Inch LCD - Body Only (Black) : Electronics
Solenoid Soldering help | TechPowerUp Forums
K-50 aperture fix (again) see comment : r/pentax
New Genuine Repair Part For Pentax K30 K50 Ks1 Ks2 K500 K-30 K-50 K-s1 K-s2 K-500 Dslr Digital Camera Aperture Solenoid Plunger - Camera Flex Cables - AliExpress
For Pentax K-S1 K-30 K-50 K-500 Aperture Solenoid Plunger Coupler Spare Parts | eBay