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
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SDM failure? suddenly not working on Sigma 70-200 2.8 HSM II
Jul 23, 2012

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 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) Tamron AF 70-300mm F/4-5.6 Di LD Macro
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