Argon EON NAS not powering on

I’ve had EON NAS unit for about 6 month, last night i was setting up Ubuntu, shut it down and left it. Came back this morning and the unit is completely dead, it will not power on. I’ve even swapped the Pi4 out with another board and still no life.
I’ve checked the PSU with a volt meter and it’s still outputting power.

Anyone had a similar experience?

I’ve now looked further in to this and discovered the 3v pins on the GPIO header of the Pi4 is dead, which leads me to believe the power board in the EON has malfunctioned.

Mine never turns back on after shutting down unless I disconnect the power cord and plug it back in.