I have a children's electronic ATV that I'm trying to repair. It shuts off whenever power is sent to the wheels (even if the motors are disconnected) and the troubleshooting led me to examine the circuit board that runs everything. When I opened it up, I found that one of the transistors had exploded and burnt out. I was hoping to replace it or the entire board, but I can't figure out what the transistor is exactly and the code printed on the board, RX-16CD-1d5, doesn't return anything useful. Can anyone else identify it?

The model code of the ATV is W442-A06-WH and a link to the manual is here: ATV User Manual