DA* 55 1.4 SDM Problem

**twilhelm** · 02-13-2019, 02:06 PM

Originally posted by jddwoods

Hello to both! How old are your DA 17-70's? I bought mine new back in 2009 when the lens was originally launched. What I am trying to determine is, if I get mine repaired will I get an improved motor or will it be the exact same type as the one that failed. If replacement SDM motors nowadays are improved from the original ones from 10 years ago, I would get it fixed. If however the replacement motor is same exact one as the old one, with the same risk of failure, then I would hesitate getting it fixed. I really like my reliable 16-85, but I wouldn't mind having a fixed f4.0 zoom lens as well.

I bought mine in 2010, so an original run.

I’ve been told by several people, including my camera repair man, that there were some changes made to the replacement motors for the lenses that had the highest failure rate. That being said, I have nothing to back that statement.

=Off Subject =
My repair man shoots Nikon, but loves to play with my Pentax equipment. He told me if the wife would allow him to, he’d buy a Pentax kit (other than his Spotmatic) to go with his Nikon.

**Wingincamera** · 02-13-2019, 06:00 PM

Originally posted by solatana

One question still is there: Can I find out date of manufacture with serial number?

You can get a rough idea by checking the Serial Number Data Base. Compare your serial number with those who purchased new.

Pentax Serial Number Database - PentaxForums.com

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02-13-2019, 02:06 PM	#31
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,355	Originally posted by jddwoods Hello to both! How old are your DA 17-70's? I bought mine new back in 2009 when the lens was originally launched. What I am trying to determine is, if I get mine repaired will I get an improved motor or will it be the exact same type as the one that failed. If replacement SDM motors nowadays are improved from the original ones from 10 years ago, I would get it fixed. If however the replacement motor is same exact one as the old one, with the same risk of failure, then I would hesitate getting it fixed. I really like my reliable 16-85, but I wouldn't mind having a fixed f4.0 zoom lens as well. I bought mine in 2010, so an original run. I’ve been told by several people, including my camera repair man, that there were some changes made to the replacement motors for the lenses that had the highest failure rate. That being said, I have nothing to back that statement. =Off Subject = My repair man shoots Nikon, but loves to play with my Pentax equipment. He told me if the wife would allow him to, he’d buy a Pentax kit (other than his Spotmatic) to go with his Nikon.

02-13-2019, 06:00 PM	#32
Wingincamera Loyal Site Supporter Join Date: Oct 2012 Location: Spanaway, WA. USA Photos: Gallery \| Albums Posts: 1,022	Originally posted by solatana One question still is there: Can I find out date of manufacture with serial number? You can get a rough idea by checking the Serial Number Data Base. Compare your serial number with those who purchased new. Pentax Serial Number Database - PentaxForums.com

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