What Causes the “Error 99” with the Canon Camera?

We found the reasons behind the issue to be:

Solution 1: Troubleshooting Camera

First, we will be verifying and narrowing down the issue, for this, we will remove some of the components of the camera and test it without them. This will help identify the origin of the issue. For that:

Solution 2: Checking Shutter

If you were unable to fix your issue from the method above, you will have to either take your camera in for service or verify some things yourself. However, it is a delicate process and a simple mistake might permanently ruin your camera.

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