bjf
Member
I have an 820-3115 board without obvious liquid-damage that boots fine but has no trackpad. Testing with known-good trackpad and cable plugged in. 5V is present going to U5805. Boost circuit is not working. Z2_BOOST_EN is at 0.043V. The boost circuit area looks clean. R5811 is measuring fine at 100KΩ. Any thoughts on why Z2_BOOST_EN is not coming on?