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Russell A.
Russell A., Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 5008
Experience:  30 years of experience as a TV station technician gives me a unique understanding of technical equipment issues.
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My canon 40d will not read cf card says reformat but will

Customer Question

my canon 40d will not read cf card says reformat but will not reformatt
JA: How long has this been going on?
Customer: 3 days
JA: What troubleshooting have you tried?
Customer: bought new cf card
JA: The camera expert can solve this for you. Anything else you want him to know before I connect you two?
Customer: no
Submitted: 2 months ago.
Category: Camera and Video
Expert:  Russell A. replied 2 months ago.


What are the capacities (in gb) of the old and new CF cards?

Did the problem first occur while shooting or after transferring photos to a computer?

Customer: replied 2 months ago.
After transfering
Expert:  Russell A. replied 2 months ago.

Check inside the memory card slot with a flashlight and a magnifier (if necessary) to see if any pins are bent. A missing pin will keep the camera from reading the card. Please let me know what you find.

Expert:  Russell A. replied 2 months ago.

If you require additional information, please use the Reply to Expert Tab to contact me. Click the ratings only after our exchange is complete and you are satisfied.