Voltronic Axpert VM IV - Check the Boost on Mppt Board

30
Parts
Attribute
Reference values
Failure status
D82
Resistor
+ to -: 237k
- to +: OL
Short or explosion
Diode
+ to -: 0.458V
- to +: OL
D67/D73
Diode
+ to -: 0.47V
- to +: OL
Short or explosion
Q17
Resistor
GS: 1.195k
SD: 4.692k
DS: OL
Short or explosion
Diode
SD: 0.535V
DS: OL
R238
Resistor
0.7 ohm
Open or other values
R235
Resistor
0.999K ohm
Open or other values
R258
Resistor
1.195K ohm
Open or other values
R260
Resistor
22 ohm
Open or other values
U18
Resistor
PIN7 TO PIN5: 72k
PIN6 TO PIN5: 1.21k
Short or explosion
TX1
Resistor
PIN2 to PIN4: 2.7ohm
PIN7 to PIN9: 1.4ohm
Short or other values
When 09 fault happens, and you couldn’t find other damage, please check TX1!!
3.8 Check the Boost on MPPT board
Power devices
Boost IGBT Q1/Q6 and Diode D1