My grandfather passed away 2years ago, and he was the family photographer. When he passed away, I was given the honor to be the family photographer along with permission to use his nikon d3200. This camera has a lot of sentimental value. the last couple of months it has had a difficult time recognizing there is a SDcard installed, and recently it started not seeing most SDcards. and if it does see its there, it says its damaged. Is there a reason for this other then the sd slot is damaged, and if the sd slot is damaged can it be replaced/fixed? and how much would it cost roughly?