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Forum: Pentax K-30 & K-50
09-14-2017, 09:53 AM
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To have this continue over 3-4 generations of cameras is really disappointing.
A real shame because otherwise these were all arguably class-leading cameras for their time. I still love my K-30 to this day, it is a really excellent camera.
Then to have the user community do the engineering discovery to figure out what is happening and how to fix it only adds salt to the wounds.
C'mon Ricoh. We know you have limited resources, but really?
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Forum: Pentax K-30 & K-50
02-23-2017, 06:45 PM
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To speak to that a little, here is an experiment I did. Anecdotal and sample size of one, so keep that in mind:
- I had 2 green solenoids. One good, one bad (inside a K-30)
- I took the good fork only and put into the bad solenoid. It did not fix the problem.
- I replaced the entire bad solenoid with a good one and it worked fine. (and has been for months)
This seems to point to the non-fork part of the solenoid as the root cause, so some speculation might be:
- something to do with the permanent magnet.
- insulation breakdown over time of the copper windings causing shorts.
- poor quality impure copper causing some kind of problem over time. Microscopic fracturing ??
- something else.
This stuff is way beyond my expertise level so I hope others can add more insight.
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