What size (capacity) and type (SD, SDHC, etc...) of the new and old memory cards are you using?
Unfortunately, SDHC cards 4gb or larger, it will not work in this camera. Because it was made around 2005-2006, before the larger capacity memory card format was finalized and incorporated, the D50 model can only use SD cards that are 2gb or less in capacity. See the Nikon page at the second link for original recommendations. (2gb cards have the same configuration as 1gb so they are compatible) Please see the link below for a source of the cards that will work.http://www.amazon.com/SanDisk-Class-Flash-Memory-SDSDB-2048-A11/dp/B0009RGLSEhttps://support.nikonusa.com/app/answers/detail/a_id/17467/~/approved-memory-cards---d50Please keep in mind that my diagnosis & solutions provided are directlydependent on the accuracy of your description of the problem. As withany "do it yourself" fixes, success is a "team effort", since I can'tsee or touch the camera, and relies on the customer's manual dexterityand ability to follow the instructions well.If you require additional information, please use the Reply to ExpertTab to contact me. Click the ratings only after our exchange iscomplete and you are satisfied.
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