Aller au contenu principal

Modèle début 2011, A1278 / 2.3 GHz i5 ou processeur 2.7 GHz i7.

778 questions Voir tout

boot fail, fan spin, black display

fixing for a friends

he say to me that is dropped and after gone on sleep, never come back and won't boot anymore.

when u press power button, stars with fan spin and black screen and no more just gradual fan acceleration

i tried:

other magsafe = same

external monitor = same

i try with no ram = no beep

no battery= same

no hd = same

im on 99% logic board issue (seems like the classical gpu failure, but strange it was dropped..)

any suggestions are appreciate

Répondu ! Afficher la réponse J'ai le même problème

Cette question est-elle utile ?

Indice 0
Ajouter un commentaire

2 Réponses

Solution retenue

It's not passing the initial POST checks if it is not beeping without RAM in. Check all the power rails to ensure they are present, especially ppvcore_s0_cpu.

These are usually the worst of the bunch to solve, and is very likely to be CPU related. Good luck :)

Cette réponse est-elle utile ?

Indice 2

2 commentaires:

thanks Reece i check the back, i found some part little oxidised, i clean and still the same... to much for me try fix this board now...but thank you!

par

Where the oxidation was, check for burnt pins on components, this is likely what was causing it (but this is now logic board repair, so take it to someone who does this if you are not comfortable doing this)

par

Ajouter un commentaire

Check pp1v5 and 1v5_GPU_REG - if it is a gpu panic, than u just have to replace the cap C9560

Cette réponse est-elle utile ?

Indice 0
Ajouter un commentaire

Ajouter une réponse

lapo sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 0

7 derniers jours : 1

30 derniers jours : 1

Total : 280