SOURCE: Powershot A430 canon camera battery problem
Alkaline batteries just don't have the power for more than a few pics in a digital camera. Some may have reached their shelf life, and though brand new may even have problems just powering startup of the camera. Digital cameras for the most part should only be used with rechargeable NiMH batteries. Retailers sell these for around $7 for a package of four (about $15-19 for the batteries with charger). Keep in mind they'll save you big bucks in the long run over alkalines, AND they'll last for at least 100 pictures per charge (and probably many many more). You'll be very pleased with their performance, and may slap yourself for not buying them sooner. When at the store, look on the package for a power rating of at least 2500 mah.
SOURCE: Canon Powershot S2 IS Disassemly guide?
Lens errors are fairly common. Usually it's sand or grit interfering with the lens extension mechanism. Or the camera's been dropped with the lens extended. Or the camera has been powered on, but the lens had been blocked preventing its extension. Or the battery ran down with the lens extended ...
Here are some things that you can do to try to correct it without disassembly. They only seem to work for less than 50% of the lens errors, but if the camera is out of warranty, they're worth a try:
http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html
SOURCE: Cannon PowerShot S2 IS lens is stuck
I have the exact same problem, took it completely apart removed the zoom motor, physically turned the zoom gear and retracted the lens, reinstalled the motor, put it all back together, and found that I had the same problem and the lens wouldn't move out, so im pretty certain that the motor is bad, as the lens moves smoothly once the motor is not attached to it... looking for a replacement motor as i type...
SOURCE: canon powershot s2 15 shutter won't open
A stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, especially when taken outdoors (for shutter stuck open).
To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see the following for further info and a simple fix that may help:
http://camerarepair.blogspot.com/2009/05/simple-fix-for-stuck-shutter.html
SOURCE: Canon Powershot S2 IS Disassemly guide?
Just Google in internet "Canon S2 CCD repair" and you will find several places where to donwlod a disassembly guide.
Regards
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