Buy a new 4 channel board for ru or repair?

Question

Electronics

I recently bought a toy RC SUV and the 4-channel board was covered, I unwound the board, pulled it out, checked the current input and output, it turned out that one of the power controllers was heating up, there are 3 small 4 legs, tell me if it’s worth repairing this 27GHz board or ordering a new one on alik? But they sell it without remote controls, will the new board fit the native remote control from the typewriter?

Answer 1

Without understanding the circuitry, it is difficult to repair something - because you have to select an analogue due to the lack of the necessary spare part. If a ready-made board is sold on Ali, then it's easier to order it - if the appearance is the same, then it will do.