Over the last few weeks I've been getting random ERR 99 messages on my 20D. This has happened with the 24-70L and the kit lens. When this happens I take the battery out and I reinstall it and it starts working again. The images that were corrupt are still corrupt but the new images work fine. If I view the corrupt images in the camera it would give me a "Corrupt Image" message on the lcd or it would ERR 99 and lock up. I used my card reader to see what was on the card. There were a few images that were ok but most of the files had a .ZPG extension and could not be opened or copied. There was also a bunch of folders named with very long numbers that could not be opened. So I placed the card back in the camera and tried to format the card with the camera. The camera went black. I turned the camera back on and now I get a CF ERROR. I've tried two different cf cards and two different batteries and all I get is a CF ERROR. If I remove the card the camera appears to work fine. I get the same results with any lens attached or with no lens at all. It then tried to format one of the cards with the pc but it didn't help. I can see one cf card going bad but not both. I took the battery out of the camera for 24 hours but it didn't help.
I store my camera in a Nova 4 AW bag with the 24-70 attached and the camera in the OFF position. I move all photos from the cards to the pc with a card reader and never format the cards with the camera (maybe I should be doing this). Anyone have any ideas? Anything else I can try? What's involved with sending it back for repairs? How long will they keep it?
Canon 20D Firmware Ver. 1.1.0 (purchased new March of 2005)
(2) Canon BP-511A Batteries
Sandisk Ultra II 1 GB CF Card
Sandisk Ultra II 2 GB CF Card
Last Image (on continuous) _MG_4219.CR2
Just in time for the holidays!