[SOLVED]820-4924 - No backlight

[pws6074]

Guys,

The motherboard is super clean. No water damage or something like that.
I get 49V on pin 1 (J8300) PPVOUT_SO_LCDBKLT i have new assembly 2015, however i don't have backlight.
SMC_LID: 3.42V
PRAM reset Done

Pictures:
https://www.dropbox.com/s/qahp8osfct..._2659.JPG?dl=0
https://www.dropbox.com/s/d9n7o9q5h7..._2661.JPG?dl=0

Any idea?

 

[aprendiz]

49V means no load detected , you already tried new display assembly, so, bad display connector...... Plug a cable on the connector and check if there is continuity from pin 1 to the other end of the cable....

 

[pws6074]

I get continuity!

 

[pws6074]

I just tried another assembly from another mac and i get the same thing.

 

[dukefawks]

49V means BKL circuit is working. Usually is a bad cable/connector/LCD.

 

[pws6074]

Works!
Thank You Guys, I really appreciate your help!!!