I do one better i removed a microwave fan and just rewired it up to a plug ( since it was gonigin the trash i used it for cooling my RC battery charger for years, and Ibet with a dimmer control it work just great .( makes anoteot try it out to move air in the room/space heater lol..) a
as for the 5w not worknig what the milla amps it outputting if they too low ther not enough juice ot turn the fan motor.