How do I clean sand out of zoom lens mechanism/motor?

I took my camera on vacation to the beach. A sudden wind picked up while we were taking self/timer shots. When I went to turn it off, the lens seemed to struggle to return to the closed state. At this point, I realized that there must be some sand within the lens travel mechanism. I tried blowing it out several times, which it did work for a little while, but evidently I do not have all of it out. When I turn it on, the lens will not open or pop out to the ready position, & I get this message, "The zoom did not operate normally. Insert the battery again and turn the camera on. If the camera does not operate normally, do not put excessive pressure on it and contact the service center." Is there someplace I can go where they can disassemble the camera and blow it out with a small compressor?