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Aperture block fault on Pentax k70 camera

Posted 22/10/2022 - 20:38 Link
Just spent 200 to have a repair to my k 70 camera is this fault also likely to affect my K3 mark two camera also maximum guarantee on repair was only three months has this fault been cured on new Pentax models if not why not Graham
Posted 22/10/2022 - 21:12 Link
Hello Graham,
The K-70 uses a different mechanism to the K-3 series of cameras, so that fault won't affect the K-3ii, it's unheard of on that camera.
3 months seems a bit short for a guarantee on your K-70, who carried out the repair may I ask?
Posted 23/10/2022 - 13:19 Link
Hi Kevin thanks for reply in answer to your question my camera was returned to London Camera Exchange
Posted 23/10/2022 - 18:03 Link
Hi Kevin thanks for reply in answer to your question my camera was returned to London Camera Exchange

If 3 months was the stated warranty then so be it. Pentax official repairs (LCE are not) usually do better than that.
Posted 23/10/2022 - 18:18 Link
As Kevin says the aperture control mechanism on the K3 is different to the K70.

As to whether the fault will return on the K70 it all depends on what replacement solenoid LCE fitted.

I seem to recall a post on the forum earlier this year that Pentax has sourced a different solenoid that may cure the problem and that the Pentax official repairer, John Pye, were using these. Not sure if anyone can confirm that?

The one that fails is a Chinese made "green" solenoid and if one of these was used then it may well fail again. If there is a new Pentax solenoid and that was fitted then hopefully the problem may go away. The other alternative is to source a second hand "white" solenoid which are known to be reliable, this is what I did when my K70 failed.

K1000, Espio 140, ist, istD, K70, K3iii and numerous lenses, just don't tell my wife.
Posted 24/10/2022 - 12:17 Link
Newer K70s use a non-defective solenoid and if that's the one LCE have fitted then it should be fine. If they've fitted a new copy of the dodgy one then expect it to fail again in the future. Might be worth asking them what they use (really this should be done before any repair is carried out).
Pentax hybrid user - Digital K3, film 645 and 35mm SLR and Pentax (&other) lenses adapted to Fuji X and Panasonic L digital
Fan of DA limited and old manual lenses
Posted 29/10/2022 - 19:19 Link
Thank you to all who took the time to reply all comments were very helpful Graham

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