UM2 Random Crashing

[neo-ninja 1]

Hey Guys,

One of my UM2 machines is randomly crashing during prints if its printing something towards the middle of the bed.

It does it at random locations and random layer heights.

 

I can print the same item on my other um2, Um3 and UM5s absolutely fine. 

 

Im assuming its something sort of cable issue that when the head moves to a certain location it trips out, but the printer basically crashes, the bed and head dont move but the head does stay hot. 

 

I cant work it out, Any ideas?

[gr5 2,330]

when you say "crashes" do you mean two things are colliding?

 

Do you mean the computer crashes?

 

The power brick is operating always just a bit over it's rated power on the UM2 and often it gets upset and the computer in the power brick cuts power for a few tenths of a second which causes the firmware to reboot.  Could that be it?  Does it end up at a working home screen?

 

There are some cases where tinker firmware crashes randomly and hangs up.  I have workarounds if this is the issue.

 

Please supply more information.  Maybe send me a DM if I don't respond within 10 hours as I often "lose sight" of threads.

[neo-ninja 1]

2 hours ago, gr5 said:

when you say "crashes" do you mean two things are colliding?

 

Do you mean the computer crashes?

 

The power brick is operating always just a bit over it's rated power on the UM2 and often it gets upset and the computer in the power brick cuts power for a few tenths of a second which causes the firmware to reboot.  Could that be it?  Does it end up at a working home screen?

 

There are some cases where tinker firmware crashes randomly and hangs up.  I have workarounds if this is the issue.

 

Please supply more information.  Maybe send me a DM if I don't respond within 10 hours as I often "lose sight" of threads.

 

Hey!

 

So when I say crashes, it locks up the menu still shows that it's printing but the head isn't moving and neither is the bed. But the screen is locked up so you can't abort etc. You have to turn off and back on again. 

 

The fw is up to date, and u have tried three different power packs to see if another one makes a difference and still no luck.

[gr5 2,330]

23 hours ago, neo-ninja said:

it locks up the menu still shows that it's printing but the head isn't moving

 

That's not typical behavior for a bad brick.  That sounds like your standard crash.

 

Do you have standard firmware that came with the printer or did you upgrade to tinkerMarlin?

 

If you have tinkermarlin then take it out of geek mode and I think you'll find it stops crashing.  If you have standard Marlin then I think you need to replace the PCB.  Contact your reseller for prices on the UM2 PCB.

[neo-ninja 1]

20 hours ago, gr5 said:

 

That's not typical behavior for a bad brick.  That sounds like your standard crash.

 

Do you have standard firmware that came with the printer or did you upgrade to tinkerMarlin?

 

If you have tinkermarlin then take it out of geek mode and I think you'll find it stops crashing.  If you have standard Marlin then I think you need to replace the PCB.  Contact your reseller for prices on the UM2 PCB.

 

I updated the FW to the latest official one for UM2 machines.

[gr5 2,330]

I don't know then.  I didn't think that version was crashing at all.  It could be a bad arduino?  That's all I can come up with.

 

Wait - had you updated the firmware recently before it started crashing?  I don't think the firmware for um2/um2+ has changed in the last 2 years.  Not sure.  I've been using tinkerMarlin on my um2s for the last few years.  But crashes are quite rare.  So most likely you need a new PCB.  Maybe?

 

[neo-ninja 1]

On 4/9/2019 at 4:18 AM, gr5 said:

I don't know then.  I didn't think that version was crashing at all.  It could be a bad arduino?  That's all I can come up with.

 

Wait - had you updated the firmware recently before it started crashing?  I don't think the firmware for um2/um2+ has changed in the last 2 years.  Not sure.  I've been using tinkerMarlin on my um2s for the last few years.  But crashes are quite rare.  So most likely you need a new PCB.  Maybe?

 

 

No i updated after actrually as i assumed it could be that.