Driver board color is random (black or green)

NEJE Laser Module Ddriver Board A40640 / A40630 / N40630 / A30130 / F30130 / N30820 Driver Board Replacement

How to change control board for laser module?

First, disassemble your laser drive and heat up your iron(may take 3 minutes)

Add enough solder to make all 4 pins have solder, as shown in the figure below:

Heat the four pointsat the same time, and gently lift the control board with your left hand. If the method is correct, you can quickly separate the drive board and the main body(If you find it difficult to remove, try applying some flux to the soldering area)

When you successfully remove the driver board, a lot of solder may remain on the pins. You need to clean them.

How to clean the pins?

Step 1: Apply the flux to pins (Click on image to enlarge image)

This is flux

Apply on pins that need to clean

Good

Step 2: Tilt your laser module down, touch the soldering iron to the pins(make sure your iron is clean, clean it with napkin)

Tilt your module upside down

Touch the soldering iron to the pins

This is the expected effect

Put on new control board:

Welding new drives: