Canon SD 750 : "Lens Error, restart camera"

try these:-

• connect it to pc and on it
• vaccum the barrel of lens
• changing mem. card and batt. for 2min.
• shake it.
• on and off in different positions
• hit the part near lens softly with palm (trust me this made mine work)

If it says lens error all you have to do is try pushing the lens back in. If that doesnt work, sorry! lol =(

The lens motor is burnt out. Has to be replaced.

Lens error is usually caused by mechanical faults concerning lens assembly. The lens cannot extend or retract fully, the error is detected and lens error is returned.
Sometimes this can be fixed playing with the lens during extraction or retraction to help the lens asset getting back to normal.
More often the camera lens must be disassembled and re-assembled by a technician to fix the problem.

This is probably THE single most common failure among digital cameras. There's a halfway chance of fixing it yourself, described here: http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html

I've had similar problems with various versions of this camera. Here's the fix, if all else fails. These are step-by-step instructions to take apart and fix the camera's lens error. http://johnsmouth.wordpress.com/2010/12/01/lens-error/

The lens needs to be dissasembled and repaired or even replaced. A good camera repair tech can do this for around $100.

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.

Here's some things that you can do to try to correct it. They only seem to work for about 50% of lens errors, but they're worth a try:

http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html

the E18 means the lens system has a problem. I had it with my S2 and sometimes it worked, sometimes not. Eventually it stopped working. The only solution was sending it to repair, they changed the lens system.

Best Regards