My camera won't turn on

Perhaps you can type canon powershot sd900 software into Google and download it from the internet. As long as it is from the canon website, it should be safe. Ask a techy friend to help you if you're not sure. Good luck!

It's very likely the CCD sensor that needs to be replaced. If you need to have it serviced, this place is excellent for the Powershots and not much at all if you need to have one fixed: www.camerasandparts.com
Before having it fixed, press the DISP button first and make sure you just didn't turn the display off. If you end up needing service for the Canon, that place above is really great for these cameras.

Things to check first for a camera that won't turn on are battery contact points, and micro switches that are located on the battery and memory card doors. Troubleshooting tips on other things that need to be checked may be seen here. These tips won't work for every case, but they're worth a try.

Hi,
That sounds like an issue with the memory card. Yes you will lose all current photos on it when you format the memory card. It's also safe to leave the battery in the camera as DSLRs don't drain power when the camera isn't in use.

Things to check first for a camera that won't turn on are battery contact points, and micro switches that are located on the battery and memory card doors. Troubleshooting tips on other things that need to be checked may be seen here. These tips won't work for every case, but they're worth a try.

http://www.devicemanuals.com/guide/Digital%20Cameras/Canon/Canon-Digital-Camera-PowerShot-SD900-User-Guide-TkRBMU56Zz.html
click the link directly. and input the code shown in the link and download the manual.

It takes quite abit of power to charge the flash module. The older your batteries are, or the more drained they are = more time it's going take to charge the flash module.
It requires fresh batteries. If your batteries are not fresh, the camera will still work up to a point (that's why you can still take pictures), but it will take longer to charge the flash module.

You will be able to check this, if you have the A/C adapter. You will find that by using the adapter from a wall outlet, you'll have no problem with the flash time.

This will fix your problem, and you'll get better performance from your camera. Thanks for coming to FixYa, and don't forget to rate my solution.

Rob

Let me know all above you said is in live view and if playback of previously taken pictures is good then its problem of defective CCD Imager Sensor in your camera Canon S400

Canon has announced free of cost repair on such problem for selected models and your camera model is in list.

For details click Canon CCD Advisory.
Regards,

Here are some simple things to try first for a camera that won't power on:
http://camerarepair.blogspot.com/2007/11/simple-fix-for-dead-cameras-that-wont.html

I have the same problem, but i didnt drop mind. The lens where out when i put on da pack and now it won't start.