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This is quite a difficult repair, as the camera will need to be disassembled completely to reach the shutters, which can then be restored to normal working functionality again by a camera repair tech.
A local camera repair tech will charge around $75-150 for this type of repair.
If you fill in the Canon online repair form you may get a free repair from Canon as the camera is still under warranty:
If there are obvious signs of damage - scratches, etc then they may bill you a small cost.
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