Hi I have a Hp 15 Quanta U92 rev:d with evidence of spillage on the dvd tray but no visible signs on the motherboard except for Sio which looks a bit grubby. Laptop powers up fine but to black screen and fan runs continuosly at full speed. .
Voltages at CN1 are pin2 1+2 = 19v
pins 4-7 =3.3v
pins 9-15= 0v
pins 16-23=0v
pins 24+25 = 3.3v
pins 26+27 = 0v
pin 28 =3v
pins 29,30 = 0v.

Pl18 = 72Ω
PL5 = 135kΩ
PL12 = 23Ω
PL17 = 10Ω
PL25 = 400Ω
PL15 = 118Ω
Pl22 = 7.8kΩ
PL21 = 15kΩ
The schematic Im using is for the 1a version and is different as some ics are not present on the rev d: board. Any help appreciated