Today tried to fix shutter button on my Canon PowerShot S100. I thought may be some grain of sand prevent button working in some situations (and it’s very irritatingly).
Checked all up – nothing. And even work like a new one while it without front cover. After assembling – again – some times shutter did not work after pressing (but very seldom now).
Decided to google it. Found that it’s common problem for this S100 model.
community.usa.canon.com – 29 pages of discussions! 🙂