I have a Canon EOS Rebel T3i. A have a problem with the shutter not releasing when I push the shutter button or when I use a cable release. I'll press the shutter and it may not take a picture for a 10 count or more. Sometimes it will work correct...
I tried cleaning the contacts and it "almost" worked for one pix (only a 1 or 2 count before the shutter tripped). Subsequent photos toke a 5 count or more. I actually shot a LCD flat screen TV (lots of light and only one focal plane). I got a bee...