I've had a similar experience, but not to the extent you experienced. Glad to hear all is well. My issue concerned power loss to the TIU, but usually, like you were doing, unplugging then plugging the WIU into the outlet caused the WIU to reboot, reping the TIU, and all the lights came back on. In my case, the issue was discovered when I had to turn off the track power to reinstall an engine. When I powered the track, the WIU lights were telling me all was well, but when I tried using the app, the app couldn't activate any of the engines. After some panicked moments and some thought, I unplugged the WIU, then plugged it back in and let it reup itself and when I went back to the app, the refresh feature read the system and all my engines were now back to active status.
I discussed with myself what Tom Gilly mentioned. Using the Aux power port to power my TIU. But my shelf is so crammed with hardware components, I just went to Home Depot on line and bought a one port power switch. I plugged that into the outlet, then plugged the WIU into the power switch. Now if I have to turn off the track, I turn off the WIU as well. When I power up the track, I power up the WIU. No more unplugging and plugging back in, just turn off, turn on. I was afraid too much plugging and unplugging would damage the outlet or the plug or cause an arc that shorted out the unit. I over think things. But the one port switch does the trick.
Just a thought for future situations. Especially if you have a derailment or spark that throws the breaker on your power source.
