820-2838 no keyboard no trackpad

[Sr. Robot]

Hi, got an 820-2838 with no keyboard and no trackpad.

Tried known working trackpad, TP Flex cable, and keyboard.

I get PP3V3_TPAD_CONN, PP5V_TPAD_FILT, SMC_LID and PP3V42_G3H

USB_TPAD_CONN_P USB_TPAD_CONN_N diode mode is the same as good board.

 

[2informaticos]

Check L5710 continuity.

 

[Sr. Robot]

I reflowed the CPU in case of bad solder. It did the trick. Thanks

 

[2informaticos]

MCP internal failure.
Very old board, it will not last too much...