laser was not working

Hello

the laser was not working.

Do I need to replace the laser module, or is there another issue?

I would appreciate it if you could let me know how to repair it.

Also, if there are parts that need to be replaced, please let me know which ones I need to purchase so I can buy them.

It could be power supply, mainboard,wiring, or the laser module..

Have you ever had it working?