Canon PowerShot S500 Teardown

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By gently pulling apart the front and back halves of the lens module assembly, we expose a black gear and white gear connecting the larger brass gear to the motor
Using tweezers it's possible to remove the black gear without fully opening the lens module halves - just open wide enough like shown here to gain access.
Note: the flex circuits around the lens module are soldered and cannot be removed. Therefore you need to gently carefully move them aside when pulling apart the lens module.
On the right side of the photo, there's a small plastic piece with flex circuit attached. This piece is held by one of the screws and the front/back halves of the lens module. When reassembling it's a bit fiddly to get back in the right place if you're not paying attention.

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