I was surprised to see the tester in the box with the modules. I followed the instructions, which is like a flow chart, and sure enough it was the main module that was defective. I snapped out the bad module from the cover, clicked in the new one and tested it and the tester showed that it was good. I then disconnected the tester, plugged the unit in and all three refrigerator lights now come on. I unplugged the power each time I disconnected and connected the modules to be sure i wouldn't "blow" the board. Not sure if really necessary, but it just took a second to be cautious. Also, I used a thin spatula from the kitchen to pop off the light cover....a putty knife or very thin screwdriver would have worked too, but the spatula was right there. Very pleased and If the module goes out, I will update the rating but for now I rate this five stars. Good price, included a tester, and it works.
Just what we needed for our refrigerator.
It came packaged very well. It fit perfectly. And works like it should
Main led driver did not work they sent me a replacement
Fast delivery, went in 123. Buy all 3 and replace. Don't waste your money and time on just 1. Much brighter then original ones and no more flicker