Feb 28, 2012
Was out with the 7d yesterday and suddenly got error 40 MSG on the top LCD. Turned it off took the battery out and then it was fine for a couple of mins but then went back to the error? Now any time I put in a battery even with the power switch off it shows error 40..
I've tried a hard reset 4 different batteries cf cards etc etc anyone know what the error 40 is?