New Zwift HUB trainer, power supply defect

[Tom_J (Tom)]

See this thread, sounds like the same problem:

Jetblack Volt EMS

Yes they were really helpful. It turned out it was the power brick. I got a new one under warranty from the retailer but I also bought one for the right voltage from Amazon and it has been perfect since I started using it. Hope it’s the same thing for you as it’s a really easy fix.