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Shane

My Ultimaker 2+ Extended turns itself off then restarts

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My machine, during heat up before a print will suddenly shut down then restart as if the power switch

had turned off and on. I went into maintenance and manually heated the nozzle, raised and lowered the bed, and performed the bed leveling process with no problems. Tried to print again and same problem. while heating the bed, right before the nozzle started to heat it shut down then restarted. Any help would be appreciated.

Edited by Guest

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DSC02060.thumb.JPG.17f0397eb6c68d7a552c76ffd2ff69c6.JPGI tried a few different prints. All with the same problem. Started a print and tuned the bed temp down. While changing the bed temp the machine shut down. Loaded a new print file with bed temps off and this worked. The machine actually started to print. I've included a pic of my power source. Any ideas on what would cause this.

THanks Everybody I sincerely appreciate the Help.

DSC02060.thumb.JPG.17f0397eb6c68d7a552c76ffd2ff69c6.JPG

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That happened once to me. It was a heater that was almost dead.

First I got random shutdowns, then they occurred after 1-2mins into print and in the end as soon as I heated the hotend the power did shutdown.

It's there anyway with a tester to know if a heater it's working right/wrong?

Also it might just be a cable that isn't properly secured on the board?

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Heating elements can be checked by measuring the resistance between the two wires. I don't

know what the reading should be. I need a reading from a good one to compare. Did anybody notice my pic. The number of my power brick doesn't match the pic neotko posted.

I'll check the resistance on the heater for the bed and post this. I've only had the machine for about 2 months. Does anybody know if this is covered under the 1 year warranty.

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Just finished reading some older post and found one with the exact symptoms.

The lights start to flicker then the power goes out. That's how mine started. In the post they claimed to have replaced the motherboard and build plate to no avail. They were advised

to replace the power supply but didn't say if this worked. Anybody remember the post and remedy.

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Just to be sure. You can heat the bed but when the nozzle heats, it shutdowns. Or you can heat both and sometime after it shutdowns? Have you try to heat just bed and wait X amount of time and then turn it off (the bed) and just turn the hotend and wait again to see which one it's the one making the off/on ? (ofc if you try this try to have the hotend without filament with an atomic pull so you don't burn filament inside the nozzle)

Also, if you do the hotend test, try to set the fans at max, so the hotend must use as much power as possible to stay at the temp.

Maybe this can help to pinpoint the origin?

Btw I did check my 24W heater (not plugged) and it reads 25.4 ohms (maybe I did something wrong with the reading since I know very little about electricity resistance and ohms)

Edited by Guest

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I'll check again in about an hour. Currently I've got the machine pulled apart. I pulled the build plate and checked the connections, resistance in the wires and all looks good. No resistance or damaged wires. Checked voltage at the power terminal on the board. I've got 24.1V.

I'm going to reassemble and try again. I'll get back to you shortly. thanks for the help.

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