820-02757 No video

[javier_herart]

Hello
Macbook wont show any video on screen.

• When connected to HDMI it shows video on external monitor ONLY when the screen is almost closed
• On the internal screen I do see backlight but no image at all (not even when moving, opening or closing the screen). With and without HDMI connected.
• I found the LID ANGLE sensor corroded and reflowed it with no issues but the behaviour is the same
• Even with the internal screen disconected the behaviour thru HDMI is the same
• With the LID ANGLE sensor disconected no video at all thru HDMI AND internal screen.
• I tried disconnecting all flexes except the screen ones (and USB C) and no video on screen.

Any help would be apprecited:

1. I think issue should be on the lid angle sensor? Is the LID angle sensor needed to display video?
2. Is there a way to bypass the LID angle sensor so I can test the display?
3. How could I determine if the issue is the sensor, the screen or the board? (I dont have spare screen and sensor to test right now).
   

Thanks!

 

[2informaticos]

You should get image with angle sensor disconnected.

 

[javier_herart]

Image where? Could you be more specific?

 

[2informaticos]

On internal screen; if no other problem on the MLB.
External video should also work disconnecting internal LCD.

BTW, you can test on a working machine...