Originally posted by Paul the Sunman Yes, CRK are very poor at answering email or web queries; better to phone. However, their repair service is very good. I've used them several times, and they've always done a great job.
I can't estimate the cost for this particular job. It could be something simple (e.g., the SDM motor just stuck in one position, or too much viscous grease) or something more serious (SDM motor burn-out). Even CRK probably couldn't tell you till they opened it. That early SDM implementation was pretty under-powered, so just getting stuck is a possibility.
If it turns out too expensive to repair and you're looking for a replacement, I would consider the DA 18-135 or 16-85 instead. They are better optically and have more reliable DC motors.
My previous dealings with CRK have been very good (& this was a phone enquiry but got put to message). This 17-70 is one of those lenses that is really great, I know some do not like it, but this copy has been superb and I am just looking for a ball park figure help decide whether I spend the $$ and get it repaired...or not. Care to take a guess in a range? eg $100 best case - $200 worse case ?