Chosen Solution
Powershot S2 IS 5.0 Mega Pixels - When turning on camera the view finder display screen is black. Looking through the view finder is also black. Tried new fresh batteries. Tried taking pictures anyway but the pictures are also black. When you turn it on the lens extends like normal just can’t see anything to take pictures. Help.
gene18 sounds like either a bad shutter or a bad CCD sensor/optical unit. I would start by checking the flex cable to the CCD sensor then the sensor itself. Use This SM Service Manual - PowerShot S2 IS to repair your camera