Driver "exploded" on duet 3 mini 5+ v1.01

[kuon]

I am building a small plotter. For this, I bought a duet 3 mini 5+ v1.01.

I use 2x 1.5A nema 17 motors, in config.g I have M906 X1200 Y1200

I did a few movements (about 1 minute) and suddenly one of the unused driver "exploded" (drivers 0 and 1 were in use and driver 3 exploded). I checked wiring and vin (13.5V) and everything was OK. I plugged the machine with same config (I swapped the SD card) on another board (same model) and it ran for 1 hour without issue with the same GCode file.

The board has been sourced from E3D on october 15 2022.

Would that be serviceable under warranty?

[Phaedrux]

Please share your config.g and the results of M122.
Also please capture some close up, well lit, photos of the board, particularly the damaged area.

[kuon]

@Phaedrux Here is a picture.

I have disconnected the board. Should I power it on without steppers to run the M122?

Here is the config.g I had running when I tested the motion:

G21                                        ; use millimeters
G90                                        ; absolute coordinates
 
M569 P0.0 S0                               ; X goes backward
M569 P0.1 S0                               ; Y goes backward
 
M584 X0.0 Y 0.1                            ; Drive mapping
M92 X200 Y200                              ; Step per mm
M350 X32 Y32                               ; microstepping
M906 X1200 Y1200                           ; motor peak current
M203 X12000 Y12000                         ; max speed mm/m
M201 X5000 Y5000                           ; max accel mm/s2
M208 X0 Y0 S1                              ; axis minima
M208 X410 Y410 S0                          ; axis maxima
 
M84 S20                                    ; idle timeout
 
M204 P2000 T2000                           ; print move acceleration
 
M574 X1 S1 P"io1.in"                       ; X endstop
M574 Y1 S1 P"io3.in"                       ; Y endstop

[dc42]

@kuon was anything connected to that driver output at the time? Is there any chance that the underside of the board (especially in the area of that output connector) could have shorted against something conductive?

[kuon]

@dc42 Nothing was connected to the driver, and the board was standing on a wood board.

[kuon]

@kuon

Here is the other side.

[dc42]

@kuon thanks. I'm sorry that your board has failed, and we will replace it. Please send an email to warranty@duet3d.com including a link to this thread. You will receive a reply later today with a link to a form to fill in.

[kuon]

@dc42 No problem. It's my first fail in about 50 boards, so I'm not complaining. I will follow your instructions. Thanks