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NNHDesign
(@nnhdesign)
Active Member
Faulty mini

Hi there everyone

My mini has been running perfect for almost 1/2 year now but Now it keeps rebooting after a very short while printing..?

Does anybody else have the same problem and do you have a solution..?

Best regards

Nicki Holm

Denmark

 

Faulty Mini

This topic was modified 6 months ago by NNHDesign
Posted : 04/04/2022 8:05 am
Kalimero
(@kalimero)
Reputable Member
RE: Faulty mini

The printer restarts when the system board supply voltage drops. Or in case of a program error (watchdog). It can be a faulty wiring, a faulty power supply, or a faulty firmware.

OnShape, PrusaSlicer, MINI, PETG; engineer; I am not an employee of Prusa.

Posted : 04/04/2022 4:07 pm
NNHDesign
(@nnhdesign)
Active Member
Topic starter answered:
RE: Faulty mini

It doesn't Come with any massage on the screen. I've chatted with the prusa support and followed their instruktions and they say that there are no loose wires 🤔

Posted : 04/04/2022 7:06 pm
Kalimero
(@kalimero)
Reputable Member
RE: Faulty mini

there are no loose wires

I mean the power lines to the printer. The voltage may fluctuate.

It doesn't Come with any massage on the screen.

Nothing can be displayed on the screen during restart.

I recommend measuring the 24V supply voltage with a memory oscilloscope.

OnShape, PrusaSlicer, MINI, PETG; engineer; I am not an employee of Prusa.

Posted : 04/04/2022 7:17 pm
Kalimero
(@kalimero)
Reputable Member
RE: Faulty mini

Restarting the printer can be caused by:

1. button, it can be excluded

2. firmware error, can be reloaded

3. by a drop in the supply voltage

4. motherboard failure

 

OnShape, PrusaSlicer, MINI, PETG; engineer; I am not an employee of Prusa.

Posted : 04/04/2022 7:30 pm
NNHDesign
(@nnhdesign)
Active Member
Topic starter answered:
RE: Faulty mini

The funny thing is that it will print some files but others just reboots it..? 

I've tried the same files on my ender 3 and there it works ? 🤔

Posted : 05/04/2022 8:29 am
Kalimero
(@kalimero)
Reputable Member
RE: Faulty mini

That is understandable. Another printer may not have the same problem.

OnShape, PrusaSlicer, MINI, PETG; engineer; I am not an employee of Prusa.

Posted : 06/04/2022 6:11 pm
3DK
 3DK
(@3dk)
Eminent Member
RE: Faulty mini

Have you tried a different USB memory stick? 

Posted : 06/04/2022 7:13 pm
EinTiroler
(@eintiroler)
New Member
RE: Faulty mini

I have been experiencing the same problem for three days. I thought I reset the Mini to factory settings and since then the wizard also comes after switching on and aborts with a reboot.

If I do not run the wizard, then I can not print. At print start or when changing filament the printer crashes.

Wiring looks good.

If I heat the nozzle with the heat bed, then I can print.

I have updated firmware - without success.

Posted : 06/04/2022 9:30 pm
Kalimero
(@kalimero)
Reputable Member
RE: Faulty mini

Probably a motherboard failure. Contact support.

OnShape, PrusaSlicer, MINI, PETG; engineer; I am not an employee of Prusa.

Posted : 07/04/2022 6:31 am
Zoltan
(@zoltan)
Moderator
RE: Faulty mini

Hi @nnhdesign,

could you please extend your info according to this link structure? We want to help you, you have to tell us ... – https://forum.prusa3d.com/forum/english-forum-general-discussion-announcements-and-releases/we-want-to-help-you-you-have-to-tell-us/

even an old man can learn new things 🙂
Standard I3 mk3s, FW 3.10.1 RC1, MMU2S, no closed box, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI FW 4.3.4, Prusa Connect Beta

Posted : 11/04/2022 9:03 am
NNHDesign
(@nnhdesign)
Active Member
Topic starter answered:
RE: Faulty mini

Doesn't help and like i wrote above this i can print litho on it but nothing Else right now 🙁

Posted : 11/04/2022 11:21 am
NNHDesign
(@nnhdesign)
Active Member
Topic starter answered:
RE: Faulty mini

I have chatted with the prusa chat for 2 1/2 hours and tried everything they told me and still problems 🙁

Posted : 11/04/2022 11:22 am
Zoltan
(@zoltan)
Moderator
RE: Faulty mini

If you do not provide detailes, nobody will be able to help you.

even an old man can learn new things 🙂
Standard I3 mk3s, FW 3.10.1 RC1, MMU2S, no closed box, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI FW 4.3.4, Prusa Connect Beta

Posted : 12/04/2022 4:57 pm
Zoltan
(@zoltan)
Moderator
RE: Faulty mini

Can you attach the gcode file which makes your mini crashing?

even an old man can learn new things 🙂
Standard I3 mk3s, FW 3.10.1 RC1, MMU2S, no closed box, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI FW 4.3.4, Prusa Connect Beta

Posted : 12/04/2022 4:58 pm
NNHDesign
(@nnhdesign)
Active Member
Topic starter answered:
RE: Faulty mini

It's everything i print beside litho prints that makes it reboot 🙁  can't tell anymore than what the video in the top of this shows 

Posted : 12/04/2022 6:43 pm
jcadcell
(@jcadcell)
New Member
RE: Faulty mini

I second the suggestion by @3dk to try a different USB flash thumb drive. I have been having gcode corrupted on the stick supplied with the printer which causes the printer to do strange things, including restart the bed leveling in the middle of a print. Plus, it's really easy to try this one - no oscilloscope needed.

Posted : 28/04/2022 1:19 am
Zoltan
(@zoltan)
Moderator
RE:

@nnhdesign

1. Did you slice and positioned the stl file with PrusaSlicer and set for MINI - I suspect not, because printing the circle appeares not centred to the sheet?

2. Or did you print directly from gcode file you downloaded?

3. Does it fail all the time or only for specific .gcode files?

4. You did not provide any .stl nor gcode file to verify, the files are good for other MINI printer.

This post was modified 5 months ago by Zoltan

even an old man can learn new things 🙂
Standard I3 mk3s, FW 3.10.1 RC1, MMU2S, no closed box, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI FW 4.3.4, Prusa Connect Beta

Posted : 28/04/2022 6:37 am
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