820-01987

board is pretty clean no liquid damage or corrosion. the keyboard and touchbar both do not work. i have tried with 2 known good topcases still no keyboard.

i have 1.8v power on keyboard while on. diode values on keyboard pins match obdata values on flexboard view. could use a little help on where to go here.
 

2informaticos

Administrator
Staff member
I'm pretty sure your problem is travkpad related.
KB information pass through TP, on its way to T2.

Check J6801's power rails.
Also check IPD_LID_OPEN and TPAD_SPI_3V3_EN?
 
trackpad is working on this with old topcase and new one. (it came with trackpad). this board has its own keyboard connection, and doesn't go through trackpad, however i may be mistaken.
IPD_LID_OPEN diode mode checks with obdata values (.706)
TPAD_3v3_SPI_EN is same. (.592)
 

2informaticos

Administrator
Staff member
"this board has its own keyboard connection, and doesn't go through trackpad"
Then what do the lines I2C_KBD_SCL/SDA lines?

BTW, mea culpa for non-working trackpad; you've wrote touchbar.

Complete non-working keyboard can't be caused by keyboard itself.
Check U6701/2 area and mentioned connections to trackpad connector.
I hope R6710-13 are all good.
 
looks like c6270 and r6722 were fried to a crisp. replaced them both along with u6702 but still no keyboard or touchbar
 
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