I'm no eiectrian, but im wondering if the ground wire for that particular circuit is disconnected. That would allow the lights to work, but with a lightning strike it could be frying the fixtures. We just had a couple of storms and there were storms in the spring right after I moved in. Lightning strikes are an issue here. My parents' house has been hit before. I'll call an electrician after Thanksgiving.
Your ground wire thinking sounds totally logical to me. Not an electrician either. I've done very basic electrical tasks like - replacing outlets, installing light fixtures and ceiling fans. Nothing major though.
I was looking up how LED puck lights are installed. It seems there are some different wiring methods; some direct and some using either 12V or 24V transformers.
As to troubleshooting; Google search said "Inspect all connections for any loose wires or corrosion. Poor connections often result in issues such as flickering or dead LEDs." Same one said that if you have one or more transformers to "Inspect the Power Supply: Test your LED Driver is functioning correctly and providing the appropriate voltage and current." Also "Frequent LED burnout can stem from voltage fluctuations or poor heat dissipation." There was more, but those seemed to be the most common problems I saw.
Electrician has been called. He will call me after Thanksgiving to let me know when he can come.
Perfect.
If it was me I would ask him/her to explain how your LED puck lights are wired/connected. IIRC your home was moved to your land in two sections? Is it possible that one, or more, of the electrical connections became loose in the process? Or perhaps there is a bad wire somewhere? Or maybe when they setup your home they didn't tighten a wire (or two) they should have?
I don't know, those would be some of my questions. Perhaps the electrician can safety check the homes wiring for you. Just to be on the safe side.