I turn my Legacy on then my ZW with three 180 watt bricks & the trains will sit there for a minute & then shut down. It does not sound like the bricks are tripping. I have taken all the engines off the layout & just tried one engine. It run for a minute & then shut down. The engine was just idling. I run a trolley & all my all my led lights & accessories off of the same ZW & have done this for years with no problem. In fact last week I had everything running & no problem. I tried running the trolley & lights with no engines on the layout & all is fine. I also left all the cars on the track & still no problem until I put an engine on the layout & it does not mater which track I put the engine on.
Thank you for your help
Ken M