820-00281-A Display wont turning on once closed the LID

casticos

New member
Not a Business, Just learning from experts,

I'm trying to fix one of A1707-2016 (820-00281-A) which is recently replaced the OEM battery and after the battery change, now its display not turning on once the lid is closed/open. and there is no other issues (Like charging issues). The battery seems working fine. Once the lid is closed and open, the Machine is waking up and every other functions are working fine except the display. and it is not turn off when keeps holding the power button and only respond to SMC reset buttons when the lid is closed and open.

Any suggestions, please?
 

2informaticos

Administrator
Staff member
First of all, welcome to the forum!

Check the three lid signals, once Mac comes back from sleep (U5255).
 

casticos

New member
All signals LID signals are checked and OK. U5255 / Hall sensors (R/L) also working perfectly. and display also check with other board and working fine.

Thank you,
 

2informaticos

Administrator
Staff member
So you get 3V at pins 1, 2 & 4 of U5255 after close/open lid for sure?

Can you turn it off with power button, before close the lid?
Check if power button works correctly without battery connected.
 

casticos

New member
Sorry for the late reply! Just checked again and figures are as follows,

PIN 1 - 0V. (R5253 Checked) :)
PIN 2 - 3.4V (R5252 Checked)
PIN 4 - 3.3V (R5255 Checked)

And the power button/touch ID is working perfectly. Any suggestions?
 

casticos

New member
Just resoldered the Righ hall sensor and still, the same values are showing.

C5260 - NOSTUFF & PIN 1 - 0V But I'm getting 3.3v on the top of the right hall sensor.

Thank you!
 
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