I replaced the master control board. Thls was a 5-minute job turned into 20 minutes because I wasn't sure how to take out the old controller/light without breaking the tabs. I ended up placing the new one on top and marking the tab spots (4) and by using a thin flat screwdriver I was able to pop the tabs. You can't make a mistake with the wires as they are 2 different sizes. DIY and save the repair visit.