820-3115 - no image

Palhano

Member
Customer punched macbook. The plate was a little crooked.

F9700 was bad, C9782 open.

On the U9000, pin 1- LCD_IG_PWR_EN is 0v. Pin 2 and 3 - 3.3v, pin 4 and 5 is 0v. Tried to change the U9000, nothing changed.

I checked the connector lines from the L9080, L9008 and L9004!
I have 3.3v on L9008, 0v on L9004.

I've already tested it with good display!
 

Palhano

Member
I've already tested it with about 3 displays! The measurements indicate not recognizing the display?
 

2informaticos

Administrator
Staff member
Then must have broken traces, or solders under PCH.
You can check with o-scope if there is communication through LVDS_DDC_CLK/DATA bus.
 

Palhano

Member
I changed the J9000 and now I have an image on the display!

Once again, thank you very much for your help!
 
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