My "New" 3ds keeps Crashing but only with cartridge 3ds games and only after a certain amount of loading has happened

would be great but I just dont wanna drop the money for the tools to test the board and take it apart when i that could fail and I could just pay a professional or someone experienced, and yeah no one is doing auctions now on ebay and its not in stores anymore so the market has gone up cause only collectors will buy them
but yeah its wierd since it still will play DS games np plus they dont disconnect after closing