A new putative class action lawsuit was filed in Pennsylvania against Ricoh USA for defects in the mechanism that controls the aperture of the Pentax K-30 and Pentax K-50 cameras. The defect reportedly leads to consistently black or dark images and renders the affected cameras unusable for their intended purpose:
A similar lawsuit was filed in New York in 2020 and was later dismissed:
Class action lawsuit for Pentax cameras aperture defects filed in New York
The class-action lawsuit for Pentax cameras aperture defects was dismissed
Here is a copy of the full filing:
New class-action lawsuit was filed against Ricoh USA for aperture issued in the Pentax K-30 and K-50 camera… by NikonRumors on Scribd