Check whether the components are damaged or dropped, check whether the components are coated with three anti-paints, and whether there is thermal conductive glue on the MOS position
Check whether the components are damaged or dropped, whether the components are coated with three proofing paint and whether the MOS position is coated with thermal conductive adhesive
Check whether the components are damaged or dropped, whether the components are coated with three-proof paint, and whether there is a thermal grease at the MOS position.