820-00850-A - no video/image/no backlight - no liquid damage

[quasimodo]

Hey guys,

got a strange board here.

MacBook dropped on floor / no liquid damage. Thought it was a bad lcd.

chimes/boots/works externally.

replaced LCD screen - no difference.

pram reset/dfu - nothing.



where to start?

 

[2informaticos]

May have broken trace, or solder somewhere.
Keep in mind, dropped machine may be nightmare.

Check 3V3/5V_S0SW_LCD and DP_INT_HPD; internal LCD connected, of course.

 

[quasimodo]

3v is there, 5v is there

DP_INT_HPD is not there. 0V

 

[quasimodo]

just changed internal LCD cable - everything is there. jesus with us.