-30 3D print tool and nozzle head

Snapmaker 2.0
1

Hello,

So, I started a 3D job not my first but I use laser the most. Loaded, G-coded sent to SM. At the SM I calibrated all set up. Selected the job file started…Did the whole wait to heat up… Started fine, everything is looking good. About 15 min in it STOPS. Go to the display, I see the temp for nozzle went to -30 and bed to 0.

So I selected the option for raising the temp without canceling the job. Bed temp started going up and nozzle. Starts back up and then again stops, temps read the same. -30/0 nozzle and 0/ 57 and declining. So went to cancel the job and would not allow to cancel or stop.

So I powered off and left cause I had to. Came back later that day tried again same scenario. Deleted file and sent a new G-Code. Same. So a couple of weeks went by got super busy. Now I really need this next project for a family members dad’s passing.

So created a file, sent, calibrated. Started, everything was fine, sure enough about 7 min in again. Did some forum and Google, so I changed the nozzle that was fairly easy. Now here goes the worst part, when I went to plug back in little smoke came out. I unplugged right away.

Now it doesn’t even read the tool head. Fairly sure it fried, just wanted some feedback. Unlocked everywhere nothing really the same. Any tips?

2

Negative value temp measurements probably meant the thermocouple wasn’t connected up right, one of the wires might’ve come loose. Others have reported a little (non-electrically conductive!) thermal paste in the sensor hole of the hotend helps with the consistency of the measurement.

But letting the magic smoke out plugging in the module again (with power on?? No no!) sounds like you plugged it in backwards. While the connector has a ‘clip’ the pins themselves are not sized or spaced to prevent reversal, and the clip is flexible enough to not be a barrier to an oops like this.

3 Likes
3

Well, yesterday now that I had some time. I believe you are correct, there was a loose wire from the thermocouple. Yet, im afraid you are correct the tool head is not being read when connected… This really sucks as it was fairly brand new. Thank you for your reply.