Hi. My name is*****'m a camera repair technician with almost 30 years in the business and I'll be glad to help you with your question today.
There is a small switch inside the cameras card reader that tells the the camera whether or not the card is locked. It is a small, blade switch that can become malformed so that it is closed all the time and tells the camera the card is locked. This really isn’t a user serviceable problem and should be repaired by a qualified technician. You may want to check locally for a camera repair shop in your area, or, if you need assistance finding a shop, please letme know and I'll locate one for you.
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