Laser Board Sparks When I Plug In the Power

Machine: K40 - Replaced with a LaserBoard Full Size

Board: LaserBoard Full Size

Firmware: Smoothie

Problem: Whenever I plug in the power cord into the board it sparks, I assume this is not good for any of the components in the machine. Is there something wrong with the board, or power supply that came with the board?

The sparks are due to the large inrush current as the capacitors charge on the board. It is expected behavior and to prevent it you can plug the power brick in after you plug in the board.

Yep. Recently covered here:

Ok, thank you, I will do that. I just wanted to make sure.