A1398 820-3332-A no image

[hgoncalves]

Hi,

I have an A1398 820-3332-A that has no image (nither internal or external).

It has USB acticity, it reaches 1A in bench PSU, and it seams to be working but has no image.

Already resoldered U8900, but with no result.

Can you help?

 

[2informaticos]

Are you sure there is no image on internal LCD.
Is good to discard backlight issue.

Next, test it disabling GPU...

 

[hgoncalves]

Hi.

There was absolutely no image on LCD, but It was backlight :-(

TKS!

 

[2informaticos]

It works disabling GPU?

 

[hgoncalves]

Hi,

I didn't disabled GPU. After replacing the backlight IC, it started to work in a normal way.