Hi, got here a new problem case. Received it with only little info. little corrosion around u7000 Fixed it easy. Was booting fine but very slow hihg CPU usage while Idle. Checked all set sensors nothing missing or no high temps. After another cleaning with flux around the u7000. Now won't boot. I checked all the power rails.
USB-C amp 20v up to 0,4a than steady 0,05a
All there even
ALL_SYS_PWRGD 1,8 v after 10 sec back to 0v
PM_PCH_SYS_PWROK
But no
PPVCC_S0_CPU 0v
Checked for corrosion around u7220 and u7210. looks clean.
What can It be?
USB-C amp 20v up to 0,4a than steady 0,05a
All there even
ALL_SYS_PWRGD 1,8 v after 10 sec back to 0v
PM_PCH_SYS_PWROK
But no
PPVCC_S0_CPU 0v
Checked for corrosion around u7220 and u7210. looks clean.
What can It be?