Why won't Supermicro start and turn on?

Question

Server equipment

Chassis: Supermicro SC512F-350B
Motherboard: Supermicro X10DRL-IO. (LGA 2011-3)
Until they brought the processor and RAM, I decided to check the performance of the motherboard and PSU.
Connected: The orange LED is on and the green LED is flashing. The PSU fan is not working.
In less than a second, the CPU Fan turns on and immediately cuts off.
The front panel does not function, although the cable from it comes alone with 16 holes. There are 18 pins on the motherboard (2 a little to the side).
I still can't figure out where the problem is. Closed contacts Power - did not help.
2 additional plugged in the power connector.

Answer 1

Until they brought the processor and RAM, I decided to check the performance of the motherboard and PSU.

That's what a guarantee was invented for.
The PSU fan is not working.may not work without load

In less than a second, the CPU Fan turns on and immediately cuts off.

go to hell if not already