Originally posted by Moises Try to magnetized your solenoid..
it works for me.. and I am so happy that right now my camera is working good now
Do you mean de-magnetize?
The solenoid is magnetized
Prior exchanging the first solenoid, I did try to de-magnetize the solenoid and the horseshoe, because I felt this could be a possible source.
I hadhave two demagnetizing items here from old audio-days, a "Sumiko Fluxbuster" and a "Namamichi Tapehead Demagnetizer".
I tried both, the Sumiko was a bit complicated, because I had to connect the wires of the Solenoid to an RCA connector and then run the
demagnetizer through it (permanent magnet taken off of course, so only the coils and the iron material is de-magnetized: The Nakamichi is pretty simple to use but cannot demagnetize coils.
One can test this later with a demagnetized screwdriver if any magnetism is gone, it works, the horseshoe did not "stick to the tip of the screwdriver"
But... none of this helped! The solenoid would not work any better!
Few minutes later the white solenoid was installed: Voila!!! It works perfekt.
I believe the filing as well as the "russian method" will work, but I have the suspision, that the permanent magnet in the green solenoid is too strong
plus the precisision which was applied to the manufacture of the white solenoid, anybody who knows how to work with very fine instruments (surgeons for example) can clearly define the difference, butchers of course can't so easely....
So .... all repaired K30/K50 work.
All solenoids taken out of those bodys showed to me very clearly that the horseshoe is "more stuck", sticks tighter and.... moves with less precision inside its counterpart.
More I personally don't need to know. It's enough and... it helped many others.
Sadly I cannot read Russian at all, because there are forums over there where they discussed a lot and I am certain they have found very interesting things. But searching Pentax and Solenoid brought me onto quite a few websites over there.
---------- Post added 05-12-17 at 01:01 AM ----------
Originally posted by reh321 It is too bad that the K-30/50 was such a sales disappointment for Pentax. The only way they could maintain the 7% failure rate reported by outsiders would be for the K-30 to be 14% of their sales if nothing else failed, or for the K-50 to be at most 22% of their sales if nothing else failed.
Typical, I even show you prove that the failure rate of the K30 is much higher (one could even say, right now "it is raining damaged K30's over here in Germany!) you stick like a magnetized horse-shoe to a solenoid to "your 7% failure rate. Concrete?
Originally posted by reh321 Personally I had never thought about a connection between the two, until several members here told me that the K-30 was derived from the K-01. If the K-01 didn't pass aperture control on to the K-30, the connection must be much weaker than stated. You should probably correct any one who says that in the future, since I may not be around to do
I am not interested to correct such nonsense. The K 01 was introduced few month earlier (Febr. 2012) than the K30 (May 2012). Developement took probably a few years, so how on earth should the K30 be derived out of the K-01?
Originally posted by reh321 No, the question is what is the best way to fix the problem. Not enough time has passed to determine how well this method works, and whether old "white" solenoids work better than new "green" solenoids.
Bullshit!
We have the first reports of even Pentax/Ricoh repaired bodys with the orig. green solenoid which failed again.
But not even Peter Gabriel would be able to help you in this case:
So I recommend on those who are not going to be confused by those unfounded useless commentaries: