whelp it was a good run. I had my replacement running for a bit. I recently started having an issue with filament snapping so I decided to add a filament monitoring switch. 2 wire setup going from ground to e1 stop no center pin. I plugged it in and e1 fan started running. suddenly i noticed the wifi had no power. I unplugged the switch and reset the board still no wifi power led. I plugged in USB and nothing. This seems like exactly the symptoms as last time except I did not get a smoking hole in an SD card. Also happen right around when I hooked up my 3rd end stop.

@dc42 Thank You!!!

Just wanted to post an update. i have re-installed my old controller (Rambo) and swapped back all of my electronics and nothing seems a miss. I want to point out i had not changed any 5v connectors during the swap to or from the duet and i did not install or move any 24v connectors (bed,hotend) while the system was powered on.

For posterity here is the SD card

And a screen shot of my voltage from the web console

@bearer said in SD Card Smoked and Burned:

@skywurz said in SD Card Smoked and Burned:

I have tried 2 usb cables 2 computers and no dice on connectivity.

yeah, long shot. with a hole in U10 you woulnd't be able to run motors no matter what happened; odds are you'll need a couple of chips replaced.

Yeah trying the instructions when i jumper the erase pin i do not get the diag light and then the board starts smelling hot. the large chip becomes hot to the touch.

@bearer said in SD Card Smoked and Burned:

Maybe try firmware recovery but its a long shot.

If anything on the board feels hot when running of USB then stop.

Btw, just lighting or a hole?

Ah yeah good catch i did not see that! Looks like a hole to me.

I have tried 2 usb cables 2 computers and no dice on connectivity.

I already unplugged everything. when i plug in USB all of the lights seem to come on. I do not see any burned chips or anything like that

Hello All

I was setting up my new Duet 2 WIFI. I had been having issues with my end stops not working so i decided to go with stall detection. Everything seemed to be working fine i removed my end stop wires from the board and continued testing. when suddenly i started smelling smoke. I turned off the machine and found that the SD card was very hot (burned me a little when i ejected it) the SD card has clear heat damaged and looks like it started to burn. Now the board is not responsive. I unplugged everything (except the heated bed and hotend because they dont unplug) and tried to turn the system back on. after a few min i noticed a burning smell, my hot end was on full blast. Im not sure whats wrong any ideas? it will not connect to USB and when i plug in the SD card when it is on usb power it starts smoking again.