How to Repair a Canon XTI Flash

Written by mark spowart
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How to Repair a Canon XTI Flash
The Canon Rebel XTI, similar to camera pictured here, has a popup flash built into the pentaprisim. (slr camera and lens image by Sandra Henderson from

The Canon Digital Rebel XTI was released by Canon in 2006. The camera is compact digital single lens reflex (DSLR) camera that will work with a number of Canon and third party manufacturers' lenses. Like other models in this segment of the DSLR market, the Rebel XTI has a small popup flash that rests in the camera's pentaprism when not being used. The flash, while not as powerful as an external flash unit, will provide decent coverage in the right situations. From time to time the flash may stop working, and a few steps can be taken to diagnose the problem.

Skill level:

Things you need

  • Small or precision set of screwdrivers

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  1. 1

    Make sure the flash is turned on. The popup flash doesn't have its own power switch, but you can disable the flash if you are not careful. Check the round exposure mode dial located on the top of the camera. The setting that shows a flash icon with a line through it will turn the flash off. If the dial is in that position the flash will not fire.

  2. 2

    Check the camera's ISO settings. If the ISO (light sensitivity) is set high enough, the camera will determine that no flash is needed and therefore won't engage the flash unit.

  3. 3

    Inspect the flash bulb. Remove the battery from the camera. Press the flash button located on the front side of the camera to raise the flash.

  4. 4

    Remove the two small screws on the side of the pentaprism unit that holds the flash guide arms. Carefully unhook the flash out of the camera. Do disconnect any wires.

  5. 5

    Remove the screw on the front side of the flash arms and remove the front panel of the flash.

  6. 6

    Inspect the flash bulb to see if it is burnt out. If so, replace the flash bulb unit and reassemble the popup flash.

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