Originally posted by Henrico The K-01 has no solenoid driven aperture, that's right. But there seems to be two solenoids in the shutter mechanism itself that fail. Here on the forum there is a picture of it what shows that.
The K-01 failure differs from the K-30 generation failures, the K-01 shutter stucks, with the K-30 the manual aperture stucks. In common is that both failures are caused by solenoids.
The 2 solenoids within a K-01 for the shutter are very different than the single one for aperture in any Pentax DSLR.
But they actuate a but different in the mirrorless K-01 than those in any Pentax DSLR.
Right from the moment the K-01 is switched on, both solenoids actuate and keep the shutter up/open.
With a Pentax DSLR this happens only with LiveView and .... even longer... if using it for video.
So both solenoids are under much more/longer demand.
Sadly when I once disassembled a K-01 I didn't "dig deeper" to get to those solenoids for comparing them to those used in any other Pentax DSLR
but I have done so with severy Pentax DSLR: All those share the same solenoids:
Those two are from a K-x: