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10-14-2020, 11:56 AM   #1
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Join Date: Oct 2020
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Pentax zx-50 help!!!!

Hi! Iíve had this Pentax ZX-50 for a couple of months now and I keep having interruptions with my filming. Occasionally my camera stalls and the shutter release doesnít open for a couple extra seconds and I end up losing one exposure. Any other time I use it itís spot on. Usually this doesnít cause me any problems (I usually just deal with losing about 1-2 exposures per roll) but today it malfunctioned much worse than it ever had before. Any time I would turn the camera on or off it would take an exposure, and same would go for any time I pressed a button. It ruined the whole roll and now I have to start over. Does anyone know a reason for this to be happening?? Please, any help would be greatly appreciated. Thanks!

10-14-2020, 01:03 PM   #2
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 7,682
The ZX/MZ series is plagued by having a plastic gear on the mirror motor which splits and slips. This is typically manifested by the mirror locking in the up position. The operation of the aperture, shutter and film advance are all inter-dependent on the timing of the mirror operation so it is not inconceivable that a partially slipping gear would cause the problems you are seeing.

If the gear is slipping the solution is to replace the gear with a metal one. See more details in this thread:

MZ5n mirror blocked, service manual? -
10-14-2020, 01:04 PM   #3
womble's Avatar

Join Date: Apr 2010
Location: Hertfordshire
Photos: Gallery
Posts: 3,447
Sounds like the electronics have died. If so, it's unlikely to be worth repairing even if you can find someone willing to do it.

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