I have an Leaf Aptus 22 that has developed malfunction. The back says 'Insert storage card' and the card writing LED blinks red when inserting a CF card of any age and size. The firewire powers the back but there is no connection to Leaf Capture software. What I understand the 'firewire board' is defect. However, I want very much repair this back but I think the only solution is to wait for some electronics guru to start servicing old backs.