Sunbeam flexfit heating wrap not working trying to solve flashing light.

This is a video of me trying to fix a sunbeam flexfit heating wrap that quit working after like 3 or 4 times of use and stored for a few months. I am assuming it is an ic chip that is the brains of it but I don't have another one to replace it with. If you know what is wrong with it let me know I would love to fix it and not throw it out.