CNC controller blue screen

The GSK980TD CNC lathe controller turned blue during machine working, and all functions failed when the CNC screen was blue, and the CNC controller was halted.

Check below steps:

1-      The CNC controller screen has problem or not?

2-      The PCB board for display.

3-      The 5V power of CNC controller I/O board is shorted or not?

4-      Check the switch power 5V is lost or not?

5-      Any short circuit of outer 5V power supply?

In this case, all above was fine, as the problem occurs occasionally we could only check it when the problem appears, then the 5V power cable of the spindle encoder was found, fixed it and the machine resumed.