LCD Screen won't turn on. I can take pictures just fine but the screen just won't turn on. Hasn't been dropped or exposed to water at all. Canon EOS Rebel T3i

SOURCE: Canon EOS 400D LCD screen problem

There is no live preview mode on this camera. I am not sure if that is what you are referring to, but you can only use LCD for review and menu, not as a viewfinder.

The new Rebel XSi is the only one in the rebel series with this new feature.

Hope this helps!

SOURCE: EOS Utility does not recoganize Canon Rebel Xti

I believe there are 2 modes of usb transfer that you can pick in the camera. They are set somewhere in the menu in the options. If you go through the menus thoroughly you'll find it. One option is for connecting the camera directly to a printer and the other is for computer transfer (there might also be an Auto setting but I don't remember for sure). Make sure that setting is set for computer transfer. If that doesn't fix your problem, re-install or update EOS Utility / ZoomBrowser.

SOURCE: Canon EOS Rebel problem

This is usually caused by a defective shutter release switch - it'll have to go into a repair shop - independent shops will charge about $110 USD - Canon charges about $180

SOURCE: Canon 450D, ERROR 99 only when flash pops up

Err 99 usually means your lens contacts are dirty either on the lens itself or on the camera.

To isolate the cause of the issue, do the following: -
1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, the camera may be faulty and requires a service. If it does not, then: -
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -
1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.

If the “ERR 99" message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99" with a different Canon lens attached, then the camera is faulty and should be serviced.

SOURCE: Canon EOS - no data on LCD and viewfinder says busy

I can help you fix the BUSY Error or Error 99 of your Canon EOS Rebel XS.

Installation of this Canon EOS Rebel XS firmware version 1.06 update will solve these problems:

1. Some cameras may exhibit a phenomenon in which the LCD monitor does not display, the shutter does not release, and the BUSY indication remains lit in the viewfinder.
2. The message, "Err 99 Shooting is not possible. Turn the power switch to<OFF> and <ON> again or re-install the battery", appears on the camera's LCD monitor, and after the above operation is carried out,the LCD monitor displays in a language that is different from the actual language setting.

1. Follow this link to download a pdf version of the firmware installation instruction guide.
2. Follow this link to download the Windows Version of the Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update.
3. Follow this link to download the MAC version of the Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update.
4. Follow this link to download the Canon EOS Rebel XS / Canon EOS 1000D Instruction Manual.