How to solve the transformer high-frequency noise of range hood motherboard?

Hello, you can check according to this operation.

1. Check the transformer: Open the hood shell and check whether the winding and iron core of the transformer are loose or damaged. If so, the transformer needs to be replaced.

2. Check the power supply voltage: use a multimeter to measure whether the power supply voltage of the range hood is stable. If it is unstable, you need to check the power cord and power socket.

3. Replace the power filter: If the power voltage is stable, but there is still high-frequency noise, you can consider replacing the power filter.

4. Contact after-sales service: If the above methods fail to solve the problem, it is recommended to contact the after-sales service department of the range hood for repair or replacement.

"Caution" means that the power supply of the range hood must be disconnected before any maintenance operation, so as to avoid the danger of electric shock. It is important that safety comes first and must be handled in a safe situation.