One of my friends had a similar issue with his WIU. Only the PWR light was coming up.
If this can help, here is how the problem got resolved:
1- Following the reset process suggested above by H1000 (https://ogrforum.com/topic/wiu...2#188663164356616942), the other lights on the WIU came on normally and the WIU was accessible via WIFI.
- Note: This reset process what repeatable, but did NOT resolve the problem permanently as every time the WIU was left un-powered for any period of time, the same initial problem would be back.
2- From the MTH DCS Software Downloads website (https://www.mthtrains.com/dcs-software-downloads), the latest available file WIU Firmware v1.1.0 was downloaded.
3- Following the Updating WIU Firmware instructions from the WIU pdf Manual available in the SUPPORT tab on the WIU product webpage (https://www.mthtrains.com/products/50-1034), the LuCI web interface was used to re-Flash the WIU per the screenshot below.
- Note: The "Keep Settings" was un-checked to maximize the chances to remove anything from the previous setup having the problem.
So far so good, so... problem apparently resolved.
