The screen that shows the uptimate picture that the lens is capturing is all messed up. It has a series of color lines on the screen as well as a diagnol line accross it. So this "viewfinder" screen doesnt show any picture that I am taking. How do I fix this? (I'm not sure how this happend. I have young children it could have been anything!) Thank you, Jess

Not clear when you have white lines. While looking on the screen or really on a image.
Lots of camera's produce lines on the LCD, when using the LCD to frame the picture. Special when there are small and sharp lights in the image. But the sensor is not capturing that while making the picture. It is a sort of smear on the screen.
Also, when you try to make a picture in bright lights, you can get flares, but those you can see on the screen and in the picture. To fight flares, most camera's and lenses come with sun hoods. Your camera does not have a hood, so try to avoid shining bright lights on the front of the lens.

This maybe two problems, the pink color hue in the picture and lines from lens shutter problems. Your LCD is still good. You have to replace motherboard and lens.

I know it may sound like the shutter is moving, but you're going to have to actually look down the lens barrel to confirm it's actually moving, and not just producing a sound effect from the camera. Also keep in mind Canon's SX IS series cameras are notorious for the following problem (fantastic cameras otherwise).
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, sometimes with lines, 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 this link for further info and a simple fix that may help.

This is electronic shutter problem that is the reason you get blinder effect/ noise on picture. Electronic shutter is located in lens mechanism and lens assembly will be replaced to solve the issue. Nearest Samsung service center or local camera repair shop will help you to replace lens assembly.
Thanks.

This would be caused by a defective CCD sensor inside rad this advisory from canon below:

http://www.dpreview.com/news/0510/05100602canon_ccdproblem.asp

You might want to consult canon for repairs as they are aware of such defect, its all across models here not just yours even nikon is experiencing these issues. Most of the boards where manufactured over seas calling for this advisory.

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The silicone liquid coolant is leaking, you can try looking here:
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test

i think you camera,s software is corrupted
go your canon customer center for repair it

Hi There, If your screen still lights up, sounds like the LCD Panel is cracked.

Most likely it is a mechanical failure such that the reflection mirror does not return back to its normal position, then blocking any light to the viewfinder.

Check this by unmounting the lens. If so, you may have to consider a repair operation.