SDM failure? suddenly not working on Sigma 70-200 2.8 HSM II

Started Jul 23, 2012 | Discussions thread
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Jesper F Forum Member • Posts: 60
SDM failure? suddenly not working on Sigma 70-200 2.8 HSM II

Suddenly the AF wont work on this lens with my K10D.
It was working one day but not the next.
I've wiped the contactst but its the same.

Could this be SDM-failure? Can I force it to use screw-drive?
Any ideas?

 Jesper F's gear list:Jesper F's gear list
Pentax K10D Pentax K-3 II Pentax smc FA 50mm F1.4 Sigma 70-200mm F2.8 EX DG Macro HSM II Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) +1 more
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