Schematics of driver board

NEJE N40630 laser module & laser head for laser cnc
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anticyclope
Posts: 1
Joined: Fri Nov 12, 2021 4:28 pm

Schematics of driver board

Post by anticyclope »

Hello,

Recently I made a huge mistake by confusing my 12v power supply with 24v one. As you know, electronics is working on white smoke: once it leaks from the component, the latter stops working :D
However it seems like I need to replace a diode and some SOT23-3-like device. It is severely burned, I don’t even need to de-solder it, so I can’t identify it.
Anyone by chance have the schematics of the board or photo of the components?
Thanks in advance!
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dav
Site Admin
Posts: 148
Joined: Sat Nov 21, 2020 4:00 am

Re: Schematics of driver board

Post by dav »

NEJE provides a replaceable driver board, you can contact customer service to replace it, NEJE provides reverse connection protection and surge protection for the driver, but does not support overvoltage protection, please be careful.
JackWong
Posts: 32
Joined: Thu Jun 17, 2021 2:17 am

Re: Schematics of driver board

Post by JackWong »

The burned SOT23 is cj2307, which is an anti reverse connection protection element. If you can't buy this element, you can try to short-circuit the two solder joints in the figure below. Your equipment will lose reverse connection protection, but it can work normally
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