I've a Sony Vaio PCG71911M with motherboard MBX-247, problem is PQ31 on Pin 1 19V instead of 9,5V to switch 19V on Pin4
Here voltages of faulty motherboard
PQ3 Pin2 and Pin3 = 9,5V
Pin5 and Pin6 = 0V
PQ5 Pin1 and Pin6 = 19V
Pin2 and Pin3 = 0V
Here right voltages from a same but working motherboard
PQ3 Pin5 = 11,25V
Pin6 = 18,97V
PQ5 Pin1 = 19V
Pin2 = 18,97V
Pin3 = 18,97V
Pin6 = 9,5V
Here voltages of faulty motherboard
PQ3 Pin2 and Pin3 = 9,5V
Pin5 and Pin6 = 0V
PQ5 Pin1 and Pin6 = 19V
Pin2 and Pin3 = 0V
Here right voltages from a same but working motherboard
PQ3 Pin5 = 11,25V
Pin6 = 18,97V
PQ5 Pin1 = 19V
Pin2 = 18,97V
Pin3 = 18,97V
Pin6 = 9,5V