8 y/o LG unit was not cooling or freezing. There was a clicking on the back side every 2-3 minutes. Used these 2 issues in a internet search and top 2 cited problems were dirty coils then bad PTC & OLP. Tool off the back panel, compressor was quie hot. Coils did not look excessively dirty but cleaned them anyway. DId not resolve the problem. The OLP & PTC recommended for my unit. were different than the original TSD and I thought I would have to return the parts. However, I got on a chat with Nathan and he walked me through the wiring and gave me a lin to a video for installation instructions. I have to say I was skeptical since there were 3 connections on the new parts and only 2 on the old. Installed and connected wiring as Nathan had said and plugged the unti back in. Bingo! I also wanted to mention how fast shipping was. I order the parts standard delivery, late morning on a Wednesday, They were delivered by 10:30a the next day!