SERVICE MANUAL
5KVA-220V/230V
10
V201703A
Power devices
DC/DC MOSFET: Q13/Q18/Q23 & Q11/Q17/Q20 & Q21/Q22/Q12 & Q26/Q25/Q14
Q13 Q18 Q23
Q11 Q17 Q20
Q21 Q22 Q12
Q26 Q25 Q14
Parts
Attribute
Reference values
Failure status
All:
Resistor
1
GS: 11.7K
GD: 250K
DS: 0.55M
Short or explosion
Diode
SD: 0.43V
DS: OL
Note1:
When you use the multimeter to measure the resistor of the transistor, because of the capacitor in
the circuit, it will cause the changing of the values when you measure the DS and GD. So we recommend
you measure the diode forward voltage of SD, and the resistor of GS. These two values can reflect the
situation of the transistor more correctly.
Note:
If one or more of them were damaged, please replace all of them.