T610 System Board PFault Fail Safe: Voltage sensor

Hi all,

I have a Dell T610 server, and started showing error System Board PFault Fail Safe: Voltage sensor for System Board. State asserted was asserted.

When I press the power button the rear fans spin for a moment (a split second), but server does not power on.

Tried resetting BIOS with jumper, but no luck. Also tried another PSU, but no luck either. Also tried a different Power Module.

Any ideas ?

KJ75