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i got a macbook pro 13 inch with touch bar A1706 2017. it stopped after liquid damged J4402 and J3300 was a liquid J4402 burned and i removed the connector and cleaned motherboard . Now i am using JB500 to connect charger and the motherboard turns on but no display and no caps lock react. I...

I was comparing j8500 of both schematics(820-01958-820-01521) where I tested the LCDs,J8500 same all points even ALS same .

Where to buy original parts ?

i tested other 2018 same result

I put the old LCD on and to my surprise the keyboard light came on. the broken lcd belongs to core i5 2020 not M1 the good lcd is 2018

i Will connect original broken lcd and connect to external monitor and test. O don’t have other working board to test

No new lcd I took from other laptop The original is broken

Both lines has 425 ohms

R8556/58 has continuity with J8500

The resistors are good No shorted to the ground

You meant R8556/58

No members to help this?

I can’t check traces because I don’t have other motherboard to copy. Do you have one to help see continuity with multimeter?

I can’t check traces because I don’t have other motherboard to copy. Do you have one to help see continuity with multimeter?

Screen backlight don’t reacts

after replacing coil webcam works But still no keyboard light

webcam initially didn’t work Now is working

yes

Hi I have macbook Air 2020 motherboard 820-01958 the keyboard light does not turn on and the laptop does not sleep when closing the lcd and no longer turns on when opening the laptop. the problem started when i was changing the lcd, i connected the lcd without disconnecting the battery. he broke...

Need help to fix