Macbook A2338 820-2773 Trackpad and Freeze

[Instafixx]

I had replaced the rigt sensor cable.

After joining the 2 lines. The screen goes off when approached with a magnet with board alone on desk.
But it wont go to sleep when the lid goes down after putting the board back on the chasis.

 

[2informaticos]

Check mentioned signals when the board is mounted back in the chassis.

No need to tie the pins together, if both sensors have been replaced.

 

[Instafixx]

On a wild goose chase all along.
The issue is with the the Connector of the Touchbar. JT710. When that is connected - the sensor stops working.

If not connecting that the Sensor works completely fine.
Touchbar Scenario:

JT700 Connected / JT710 Not Connected - No Touchbar Display. LID Sensor Works
JT700 Connected / JT710 Connected - No Touchbar Display. TouchBar Touch function working. LID Sensor Not Working

All diode mode readings of JT710 seem fine as per opneboarddata.

Changed the small bridge connector of the touchbar . Still the same

 

[2informaticos]

So you don't get touchbar backlight at any moment?

 

[Instafixx]

NO

 

[2informaticos]

Did you test with known good touchbar?

 

[Instafixx]

I dont have a known good touchbar. But its seems mostly like a touchbar issue. i dont know. any way to check

 

[Instafixx]

Can a faulty touchbar affect the LID sensor ??
I still think its a motherboard fault

 

[2informaticos]

A lid signal goes to JT700 and shouldn't affect back to UR300.
Just in case, remove RT702 and make short pins 2 & 3 of QT700; or between RT706 and CT706.

 

[Instafixx]

Removed RT702 and Jumper from RT706 Pin 1 to CT706 Pin 1.

Didnt Work. TouchBar touch Functionality also gone now .
Sensor issue is back.

 

[2informaticos]

Touchbar should work, if you have 1.8V at pin 2/JT700.

 

[Instafixx]

There is 1.8V there. Should i undo the Jumper and put back RT710? if that is causing the issue ?

 

[2informaticos]

You should rebuild original anyway.

 

[Instafixx]

Its touchbar issue. Checked with a known good touchbar.