Noticed the LCD on the front of the WD MyCloud EX4 displayed the following:
Power Supply 1 Failure
All of the LEDs appeared ok and I logged in via the web interface and all appeared ok here. I did notice the temp was running a bit hotter.
I powered it down, let it sit for a few hours and then powered it back on and it appears to have cleared the message right now and seem ok.
Any thoughts?