My son has a toy car, similar to the one in the link below, that no longer works. The IC is covered in epoxy. Any guesses about what it could be? What would be a good replacement? The car has buttons that make it drive forward, play music, and turn on lights. Also, I realize the easiest/cheapest route is to replace the whole car but my 4 year old son is not rational and I like tinkering with things. Thanks!
Link: https://www.amazon.com/gp/product/B00EZI2MTK
Link: https://www.amazon.com/gp/product/B00EZI2MTK