Samsung stuck at animation logo
Well, this can be caused by either a hardware failure or simply a software error, also called a soft brick. 

If your hardware is damaged, e.g. the eMMC chip is damaged, there is no much you can do than sending the phone to a repair shop. 

In other hand, the software failure can be ''repaired" by flashing the device with a full firmware, aka 4 files firmware, this cam be found online. Then simply flash it with Odin or any flashing software and your soft brick  should be solved.