Question Wondering what this potentiometer controls on this board, Its a Mean Well LOP-500-27 without variable voltage.

[reaper89971]

https://imgur.com/G6HTB1L

View: https://imgur.com/G6HTB1L


I am wondering what this potentiometer controls on the board. I suspect it controls the power supply fan because for some reason when i plug a .37 amp fan into the board the fan won't turn on. It is suppost to support a .5amp fan.

Anyone have any experience with this power supply and maybe would know what this device on the board controls.

 

[helpstar]

if you don´t know it, leave it, replace it. Too dangerous to adjust while hot wired, if you don´t know what you are doing.

what´s the naming of the connector beside and the potentiometer on the board?

Most likely the fan spin rate, voltage to the fan will be controlled by it. is the voltage rating of the fans identical?