"Will not power up No light" için geçmiş bilgisi

One day the mini  would not power up.

Symptoms.

1: no power light

2: No startup sound.

As if the Power supply is bad and or or no AC power coming in.

1: How to test the power supply unit? ruling out the Mainboard.

2: I have inspected the main board to the best of my abilities and see no visible damage.

TIA

Sam

Cihaz:

Mac Mini Late 2012

Durum:

open