Fixation in London have told me my 5D mk1 needs a new digital board. Cost = £260 + VAT. This camera is naturally just out of its warranty and I'm, to say the very least .. very disappointed. I mention this to alert other users to its symptoms: Switch on and press Menu - nothing. Fire the shutter and you get the Menu ok but no image playback when selected in preferences. Leave the camera on and the Menu will re-appear after 20 seconds and stay on to eventually drain the battery if the body isn't switched off before you need it again so choosing the power saving is useless. I've carried on using this body for some months like this as I suspected it was going to be costly. Anyone out there experienced such a failure? Richard.