Originally posted ages ago.
Canon 40d shutter button repair.
Necessary tools for this replacement include a philips j000 screwdriver a plastic opening tool and a pair of precision tweezers.
My 40d shutter failed after 16 700 actuations.
Fix it by your self.
As i said i would do a search about it 20ds seem to have this problem.
Yer ive heard of the issue with the 40d shutter button before and it turned out to be dirt under or within the button compartment.
Don t waste your money.