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Forum: Pentax K-30 & K-50
04-19-2019, 06:48 PM
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Solenoid plunger must be clicking and moving during shot. If not it may be mechanically blocked or no driving current passed through it (maybe blown transistor switching the coil). Here is voltage pulse I measured on coil during shot. You can chek it via scope.
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Forum: Pentax K-30 & K-50
03-14-2019, 05:56 AM
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How can you claim this? You neither I knows what happened inside the mirror box. I didn't applied any excessive force/violence to front cover when removing it. Even if so it shouldn't damage gears deeply inside mirror box but may cause e.g. problem wit AF switch but it is working fine, I have aligned it properly.
My problem may be caused by using the camera for cca a half year with manually blocked lens aperture level by a piece of paper (a hotfix for constant ~f/8 https://www.pentaxforums.com/forums/attachments/58-troubleshooting-beginner-...-objektivu.jpg) while still operating weared out solenoid...
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Forum: Pentax K-30 & K-50
03-13-2019, 09:23 PM
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Yes, discharging a HV cap is generaly a good idea (I was kicked by some flash cap of a compact camera years ago so I know :) but as you read before it can go wrong when done improperly...
I don't remember exactly, maybe I just released a bit some screw of top cover to be able to remove front cover but didn't need to fully remove it and didn't need any extra force or wiggle. I have a fine solder tip so no problem with space when soldering. Let users decides if they could work more comfortable with top cover removed...
Yes sure, AF/MF switch needs proper aligment in all cases.
I did sanding method before and found that I sanded it too much so holding force was too weak that in some case the anchor didn't return back to sticked position. I ended up buying a new cheap (inferior) green solenoid that moves anchor correctly. I no longer get underexposed images but mirror movement is still some way random and I cannot figure out why. I think something else broke/weared out and even if I use white solenoid it will not fix this issue. The cam had done over 35000 shots and now keeping it just as a backup body (and maybe for some firmware hack fun where don't care much if gets bricked).
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Forum: Pentax K-30 & K-50
03-11-2019, 05:17 PM
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I didn't feel a need to discharge the flash capacitor in K-30 as I didn't need to remove top cover for solenoid replacement. It seems someone did much worse because too much effort instead if he simply leave it charged...
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Forum: Pentax K-30 & K-50
01-16-2019, 10:17 PM
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Hm, "nice" so they treat EU as inferion country where the can sell a crap?
How can I determine the target from camera body markings or S/N? I can only say my K-30 is "PENTAX RICOH IMAGING CO., LTD, Assembled in Philippines" I saw that some K-30 has Pentax mark on LCD and other has Ricoh so it might changed during the production (and also the solenoids)...
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