Aller au contenu principal

This product is a 27-inch LED display with a resolution of 2650x1440 pixels released by Apple on July 27, 2010. It has the model number A1316.

Questions au sujet de 79 Voir tout

there is image from my MBPro but no backlight.

I have same symptoms with my 27 cinema display. Confirmed there is image from my MBPro but no backlight. Has been intermittent for the past year or so and had to unplug and replug a few times whenever I disconnected my MBPro for travel to get it working again. But over past two weeks haven't gotten it to light up. Took to Apple Store where they replaced the logic board which solved this issue for them but when testing it before leaving the store we could never get it to come back on again... they didn't know about the image being visible from MBPro as I just discovered this now.

From your advice, I will now test the DC voltage to the backlight. But are you saying that if it is getting proper voltage the only fix left is the entire LCD panel and the backlight can't be replaced independently?

Thanks for the great step by step troubleshooting advice!

Répondre à cette question J'ai le même problème

Cette question est-elle utile ?

Indice 1

Commentaires:

Any resolution on this issue? I have this same problem. Did they troubleshoot the issue with a known good logic board and the display work normally and the issue persist with the original logic board?

par

Ajouter un commentaire

2 solutions

Réponse la plus utile

More likely the WLED driver is blown which is on the logic board.

Cette réponse a-t-elle été utile ?

Indice 1
Ajouter un commentaire

There is a step-by-step troubleshooting guide in the Apple Technician Guide, see page 17. Screenshot included below.

Block Image

Cette réponse a-t-elle été utile ?

Indice 0
Ajouter un commentaire

Ajouter une réponse

chris sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 0

7 derniers jours : 0

30 derniers jours : 3

Total : 1,058