How to Troubleshoot & Replace Whirlpool AP6022533 / WPW10515057 Led Light Assembly

I got the 2 lights for my fridge. With the model no. it was easy to order. There was even a video on how to change them. I got the 2 lights in a short period of time and in good condition. I changed them and all was good again, 

I purchased the LED light for the freezer, but the lights still didn't work. The n I purchased the LED for the cold side and the lights work. I recommend purchasing the LEDs for the cold side first, because it holds all the components to make the lights work, so it would be the likely suspect. 

I replaced the freezer lamp. 

Replaced light. Replacement light was 10% of the cost of the refrigerator when purchased new. 

Ordered a part from you and replaced it. 

Replaced all LED's. Much easier than I thought. 

Took out the one that was not working and put the new one in. 

Ordered and replaced LED Light Assembly. 

Saw several posts that the problem was the board on the light fixture. Thought I ordered the refrig. light part but it was the freezer light assembly. Changed it out and everything worked. 

My husband installed the master control light ending in 5058 from our order and it worked flawlessly. The 2nd light was returned.