Réparez vos affaires Communauté Boutique

Sorti le 16 septembre 2016. Modèle 1660, 1778. Disponible en GSM ou CDMA / 32, 128 ou 256 Go / Or rosé, or, argent, noir et noir de jais.

2264 questions Voir tout

Options

iPhone 7 bootloops when Audio IC is in

Hi, I got some “dead” motherboards to repair and I have problem with this one. It is A1778 model. It was missing some chips (BB PWR, Tristar and Audio IC), so I replaced them.

Without audio IC it was working fine, got signal and everything, but when I put audio IC back the phone starts bootlooping. I have done jumper wires, tried another chip, but it is always the same. Any ideas where might be a problem?

Répondre à cette question J'ai le même problème

Cette question est-elle utile ?

Oui Non
Indice 0
Ajouter un commentaire

1 Réponse

Filtrer par :
Les plus utiles Les plus récentes Les plus ancien(ne)s
Réponse la plus utile

Options

Have you ruled out parts? Installing the audio IC can bring into play the front camera flex assembly, faulty battery and dock connector. If you are sure it is not a parts issue you can continue diagnosing the board.

·         Have you tried a different batch of audio IC’s?

·         Are you re-balling them?

·         You need to diode the pads under the IC and compare with a working board.

·         Have you checked all the resistors under the edge of the shield? They can occasionally get nudged.

·         The most important one is have you jumped D12 to G12 and tested?

Cette réponse est-elle utile ?

Oui Non
Indice 1
Ajouter un commentaire

Ajouter une réponse

Adam Grufík sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 0

7 derniers jours : 0

30 derniers jours : 0

Total : 38