1. power supply: check whether the power supply is normal, including plugs, lines and sockets.
2. Signal line fault: Check whether PS-ON signal line is open or short-circuited.
3. Power chip failure: If the above two conditions are not a problem, then it may be that the power chip has failed. This situation requires a new power chip to solve the problem. It is recommended to know some basic safety knowledge before inspection and maintenance to ensure that you have relevant skills and experience. If you are not sure how to operate, please consult a professional or contact the after-sales service center.