Troubleshooting of STEVAL-IHM028V2

[Tarek_ben]

Hello,

While I did tests with my motor control STEVAL-IHM028V2, I made a mistake to schort-circuit the three-phase output ! Then, I smelled a burning smell and no voltage is given in the three-phase output . When I checked the bottom face of the device, I noticed that some resistors (R74, R75 and R69) are burned (see attached images). Also, the W7 and W8 jumpers are short-cicuited. How could I fix this issue ?

N.B. The schematic of the STEVAL-IHM028V2 is attached.

Cordially

Tarek

[Tarek_ben]

Any answer about this ?

[GMA]

Hello @Tarek_ben,

On your IHM028V2.jpg picture, nothing seems to be burned... 

[Tarek_ben]

Thank you for the answer.

If you zoom in on the resistances R74, R75 and R69, you can see a black line in the middle of these resistances.

[GMA · Accepted solution]

Hello @Tarek_ben,

You can try to replace all of these components (resistors/jumper).
Set a conservative limitation current on your external DC supply.
Verify that DC voltages are correctly generated on the board. 
Monitor the current consumption when relaunching test.

[Tarek_ben]

Thank you.