Replacing the Power Converter in a Razor CO2 Laser

Step-by-Step Guide to Safely Replace the Power Converter in Your Razor CO2 Laser

This guide explains how to replace the power converter (Transformer) in a CO2 laser, a common fix for various issues such as bad engraving or stuttering of the Gantry head.

Identifying the Problem

1. Symptoms of a Bad Transformer
   • Bad engraving quality.
   • Stuttering or inconsistent movement of the Gantry head.
   • Failure in different areas of the laser due to inconsistent power supply.

Tools Needed

• Wire cutters
• Wire strippers
• Screwdriver

Replacement Process

1. Unplug the Machine

   • Ensure the machine is unplugged for safety.

2. Loosen Screws

   • Loosen the four screws holding the Transformer in place.

3. Cut Zip Ties

   • Cut zip ties to free the wires connected to the Transformer.

4. Disconnect Wires

   • Identify and disconnect the wires:
     • Incoming Power: Blue and black wires (red wire is taped off and not used).
     • Outgoing Power: Green (37 volts) and yellow (21 volts) wires.

5. Strip Wires

   • Strip about 1/8 inch off the end of each wire.

6. Connect New Transformer

   • Match and twist the wires together:
     • Black wires to black wire.
     • Red wires to blue wire.
     • Green wires to orange wires (37 volts).
     • Yellow wires to purple wires (21 volts).

7. Crimp Connections

   • Use butt connectors to crimp each connection securely.

8. Reinstall Transformer

   • Screw the Transformer back into place and secure wires with new zip ties.

9. Test the Machine

   • Plug in the machine and test to ensure it works correctly.

Conclusion

Replacing the Transformer in your CO2 laser can resolve various power-related issues. Following this guide ensures a proper and safe replacement process. For further assistance, refer to Lightburn documentation or support channels. Happy engraving!