Aller au contenu principal

Model A1419 / Late 2013 / 3.2 & 3.4 GHz Core i5 or 3.5 GHz Core i7 Processor, ID iMac14,2

341 questions Voir tout

LED n2 does not light up

Hello. LED n2 does not light up, what could be the problem? How could I check it? Is it necessary to have the ram and processor mounted on the motherboard for it to turn on? Thanks

Répondre à cette question J'ai le même problème

Cette question est-elle utile ?

Indice 1
Ajouter un commentaire

1 Réponse

andre.dias.tui you are looking at LED 1 which means you need to check LED Startup Sequence

LED #1 = Power available.

If LED 1 is on but LED 2 does not come on, you will need to check:

• Verify power button connection to logic board

• Verify power button functionality

  • Disconnect power button from logic board. Inspect cable and connector for damage. Verify continuity between the two pins of power button when it is pressed.

• Verify cable connection between power supply and logic board

• Verify power supply

• Verify logic board

I would start by checking the power board voltage output to the logic board. You can measure that on the power connector from the power supply.

Cette réponse est-elle utile ?

Indice 0
Ajouter un commentaire

Ajouter une réponse

andre.dias.tui sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 0

7 derniers jours : 1

30 derniers jours : 5

Total : 22