Da* 50-135 sdm problem again


gtis

Link Posted 31/07/2020 - 17:55
Hi
I know this is old hat
But my DA* 50-135 SDM as failed again
I am not going to spend money on it again
How easy is it to convert to screw drive
Or any suggestions on how to get it going again
Neil
cheers Neil
pentax k3 k5 super A da* 300 f4 da*50-135 f 2.8 smc 50mm f1.7 af 360 fgz pentax1.4xhd converter
Pentax o-gps1


Panasonic Dmc Fz200

fatspider

Link Posted 31/07/2020 - 18:35
It's easy, not much different to updating firmware. just download the files and follow the instructions.
My Names Alan, and I'm a lensaholic.
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Crossed-up

Link Posted 31/07/2020 - 19:11
If you done mind a bit of disassembly/reassembly then you may be able to tweak the motor back into life like I did a few weeks back:

https://www.pentaxuser.com/forum/topic/da--50-135-sdm-autofocus-problems--45483/p-0#comm650376
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Gripped K3's|DA10-17|DA*16-50|DA*50-135|DA*200|DA*300|Sigma 150-500

gtis

Link Posted 31/07/2020 - 21:07
fatspider wrote:
It's easy, not much different to updating firmware. just download the files and follow the instructions.

Hi Alan
But donít you have to rewrite the code
Neil
cheers Neil
pentax k3 k5 super A da* 300 f4 da*50-135 f 2.8 smc 50mm f1.7 af 360 fgz pentax1.4xhd converter
Pentax o-gps1


Panasonic Dmc Fz200

fatspider

Link Posted 31/07/2020 - 22:40
Yes, but it's relatively easy;

https://www.youtube.com/watch?v=3_I6jgc-TT0
My Names Alan, and I'm a lensaholic.
My PPG link
My Flckr link

gtis

Link Posted 01/08/2020 - 15:16
Hi Alan
Got it going again by spinning the focus ring
Donít know how long it will last
I will have to use it more often
Thanks for all comments
Alan is there a goth weekend at Whitby
Neil
cheers Neil
pentax k3 k5 super A da* 300 f4 da*50-135 f 2.8 smc 50mm f1.7 af 360 fgz pentax1.4xhd converter
Pentax o-gps1


Panasonic Dmc Fz200

fatspider

Link Posted 01/08/2020 - 18:00
gtis wrote:
Hi Alan
Got it going again by spinning the focus ring
Donít know how long it will last
I will have to use it more often
Thanks for all comments
Alan is there a goth weekend at Whitby
Neil

Mine doesn't get as much use as it should but fortunately it's still working OK.

You may not be aware but there's been changes to the Goth Weekend, the official WGW lost the use of the Spa for the markets and bands and someone else started an event called Tomorrows Ghost, last year they were on separate dates but this year they were combining again, obviously Corona put a stop to that, Tomorrows Ghosts have just recently announced they will not be hosting in November and April next year may be a low key event depending on how the pandemic pans out, I'm assuming WGW will be along the same lines. Last week was the July Steampunk Weekend and despite been canceled many apparantly still turned out.
My Names Alan, and I'm a lensaholic.
My PPG link
My Flckr link
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