If the fan on the laser is broken, you can buy a similar fan to replace it.

It must be 12V DC。

And the width is the same.

We have laser with 30mm FAN and 40 mm FAN. Please measure the diameter of the fan on your hand.

30mm FAN

https://www.amazon.com/DAOKI-Cooling-Printer-Electronics-Extruder/dp/B01JGNL0X2/ref=sr_1_15?dchild=1&keywords=3030+fan&qid=1589334394&sr=8-15

40mm FAN https://www.amazon.com/Printer-Terminal-Extruder-Heatsinks-Makerbot/dp/B07JPBMNVL/ref=sr_1_4?crid=9OF3GSPDX4S4&dchild=1&keywords=40mm+fan+12v&qid=1589335731&sprefix=40mm+fan%2Caps%2C359&sr=8-4