It is a little comforting that this is the first post on this thread in over 7 years so my hope is that this is just a fluke, but while installing a LM3s into a locomotive it began to melt right in front of me. Actually the same thing happened on another one I was trying to install on another locomotive last week. I was almost ready to install the shell back on the body after getting everything installed and set properly then I felt something very hot and the corner of the 6 pin end began to melt. I have installed about 30 of these for my fleet and this is the first time I have had this happen, but two? I am wondering if I might have purchased a bad batch or something. I knew when I got into Rail Pro it would be expensive but when you just trash $180 worth of modules it gets real sobering. It seems that from what I have read here the best bet may be to send them to Ring for inspection as there could be an internal reason. I had planned to spend the run-up to the holidays to finally sit down and get the next batch of locomotives converted to Rail Pro but this is a show stopper and I may just walk away from it and do something else for a while. Very frustrating and you just feel like you dropped a brand new locomotive on the concrete floor. Would trying to reach out to Ring be the best option? I do have other new modules in my inventory I could replace just to finish up this install but am afraid it might me something more than just the module. It is a Proto 2000 GP9. Seems that Life-Like only isolates one rail side for power pick-up through wires and the entire frame is powered by the other track. Seems like a risky design. I don't know if this would have shorted out the module since it is encased in plastic.