NEJE Master 2S with Laser Module A40640 Problem

1

I have NEJE Master 2S with Laser Module A40640 almost 2 years old. It was working fine until yesterday and suddenly Module started with full power and burning the material. I turned off the machine, removed the power for a while and turned back but the same problem. Now, instead of low light at standby mode it always have 100% power.
what could be the issue…driver control board on top of the module or main mother board problem.

Thanks

2

I had the same problem with my A40640 on the 2S.
It was the board on the laser module, you can get a replacement kit at the Neje store.
Be sure to check the wiki on how to repair it before you dismantle it as I nearly damaged the board underneath.

3

https://neje99.com/faq/how-to-change-control-board-for-n40630-a40640.html

4

Hello,
For what is this black cable on my repair kit.

1000029493
1000029493446×671 59.8 KB

5

QQ图片20221212110735
QQ图片202212121107351080×2400 264 KB

6

Thank you for the support,
But now the laser is working and both fans are stationary