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Forum: Pentax K-30 & K-50
05-01-2020, 12:19 PM
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First of all: Thanks @photogem for the awesome repair instructions. It helped me fixing my beloved K30.
Since I had one more spare solenoid (the donator, a Samsung GX1S, equal to the *ist DS2, has two solenoids - one for shutter and one for the flash mechanism), I decided to buy another broken camera.
I found a cheap K50 with known aperture block at a second hand dealer and bought it.
The K50 is in mint condition, no dust, no scratches - and according to EXIF data build in late 2014 and the shutter count is as low as 1600. Looked very promising.
When disassembling it, I checked to see if I could find any traces that might indicate that a repair attempt had been made before. But nothing.
So I put in the good old Japanese solenoid, put the camera back together and gave it a try - everything working fine.
Well, at least it worked this one time. Two weeks later, I wanted to take some photos: Camera fully stops down.
Now I opened up the camera again, checking if maybe my soldering work was lousy. But everything looked OK.
Nevertheless, I decided to once more unsolder remove the solenoid and put it back in. Maybe the screw titled or something like that.
While doing so, I also checked the solenoid: Resistance is 30 Ohm, the plunger set free when applying 5 volts to the solenoid. Seems fine.
Unfortunately, after putting things back together, the camera still will stop down.
If someone has an advice for me on what may have gone wrong and what to check next I'd be grateful.
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