Recently started having problems with my 5D first I gor ERR 70 message on he back LCD. Now the back buttons are not respoding, shutter is not responding plus top LCD does not show the # of images (its completely blank for the image #). Please respond if you had similar problems.
Thank you everyone in advance.
this problem is something related to the data being captured and/or written to the memory card is detected as being problematic in some way… this may not be a simple memory card error, although of course that can’t be ruled out.
you can try to change the memory card and retry.
I hope you can solve this with my advice