LoyaltechYM-100 Yami Control Board Replacement Video: First unplug all the plugs on the control board, then unscrew the 4 screws on the cover and take off the cover. Then use the electronic clamp to remove the 2 raised screws on the control board (the clamp can be used to loosen it without the electronic clamp). Finally, remove the cable, buckle the buckle, remove the cable, and the control board can be easily removed. Have you learned?