Possible motherboard breakdown

[z-axis-3d 4]

I have had 3 or 4 print failures recently where the behaviour was that it seemed to be incrementing too far on the Z axis, and making a part that resembled the actualy part but just more like a birds nest. In fact it was quite clear that the printer was extruding at least 10mm above the bed where the part was only about 4mm high.

The same gcode sometimes works and sometimes exhibits the error. I assumed there was an error or corruption, so I remade it a couple of times, both in s3D and Cura, but I have seen the behaviour from both.

I also updated to the latest firmware (I was 1 minor version behind) and I still saw the issue afterwards.

More recently I had a screen glitch as follows:

In this state the print continued and finished successfully, but I was not able to interact with the printer at all via the dial; and the screen stayed like this until completion.

Does anyone have any suggestions? I am printing another batch right now with no issues so far, but I need to prepare for the eventuality that something is failing.

Actually I just had a thought while typing this message. Maybe replace the SD card before I do anything more major.

Thanks,

Greg

[z-axis-3d 4]

Ok so with a new SD card I still have the same issue. Has anyone else seen an issue like this? Oversized z-increments ?

Thx

Greg

[z-axis-3d 4]

Today my UM2 just froze mid print. Heaters stayed on but it stopped moving.

This could be a hazard. I probably shouldn't use it until I have figured out the issue. So far no one recognise any of this behaviour? Could be a connection, power supply issue, motherboard, where do I start?

Thx, any responses would be greatly appreciated

Greg

[Ilara 1]

I had this happen (the freeze) the other day, luckily I was standing near it to realise. It stopped moving but everything else was still going, it continued extruding etc. I turned it off and rehomed it. Fortunately it was at the end of the print so I only had a bit of filament to clean up. Could have been a lot worse I imagine. I've also had it happen where the dial has become unresponsive, no error issues though. The display also flickers at times and the machine likes to reboot itself when I'm selecting a print/tuning something. I've been in contact with the company I purchased it from, as I've had mine less than 2 weeks, and been told just to see how it goes as it may need to be sent away for repair. Sadly no advice here but will let you know how mine fares!

Ilara

[z-axis-3d 4]

Thanks for the response Ilara

This is the younger of my UM2s. The other has been going for a couple of years. This one has been trouble free for several months. They are really great printers. The fact that I bought a second one after having the first for so long should attest to that.

Cheers,

Greg

[greenlee 2]

Setup a fan to blow under the printer where the mainboard is located, see if that gives different result.

[z-axis-3d 4]

Setup a fan to blow under the printer where the mainboard is located, see if that gives different result.

 

Thanks I will be trying this later. I got a lot of response on 3D Hubs talk as well

https://www.3dhubs.com/talk/thread/um2-failing-any-advice

Edited May 19, 2016 by Guest

[z-axis-3d 4]

The glitch I described above is identical to

https://ultimaker.com/en/community/18135-screen-input-freezing-but-still-printing

[greenscreener 0]

I've got a UM2 that suffers from an unresponsive selector dial/button. Can't seem to find anything definitive, but is this related? (similar to what Ilara posted) or anyone know a fix...

thanks,

David