Printing suddenly interrupts. Nozzle stops above the object

Vertex 3D Printer Vertex - Wiring and electronics
1

After a year of good printing, I have a serious problem with my printer, it seems.

During printing, after some minutes, the printer stops over the object. Not in home position.
But no failure report.

Also, I recognized, that the display sometimes shows double or multiple same file names, when I am scrolling through the objects, I want to print.

So, my question is: Is the card-reader defect? Or just the SD-card (I still have to check it with another SD-card).
Would Velleman repair card-readers, while I order a new card reader from my distributor and keep the old repaired one for reserve?

Or do I have even mor problems with the mainboard, etc.?

2

Yesterday, I printed again with no problems.

I only can assume that I had problems at the weekend on an Star Wars event in an electro-market, because we plugged two 3D-printers including a seperate fan and a camera system in a current distributor and so in the same power outlet.
I think there were voltage fluctuations what had the same effect like pushing the reset-button.

Can someone copy that?

3

I can easily kill my prints when switching off the fluorescent light in the room.
The induction in the lamp freezes the printer immediately.

Same happened in my office room, where I have 12V Halogen lamp, switching that off, the magnetic field kills the printer.

So the mentioned impact is possible

4

Thank you Frank for your answer. That shows me that I am not allone with this problem.
So, an independent power supply to buffer such fluctuations via a lead accumulator would not be bad, I think.
Someone already realized that?

5

I have had a short discussion about it with RABY, he uses something like that… He will probably answer here if he comes along.
I was thinking of such a device, but at the moment I use a LED-lamp in the room and IKEA LEDs in the printer.
That is enough of light for printing.

Another issue could be the usb cable. There are several shielded cables around. You should get a decent one, just to make sure the interference do not comes over the cable (I use a cheap one)

6

But I print in stand alone mode. What do you mean with the USB cable?

7

Hi,
if you have the printer connected to your PC or to a RPI, and sending the GCode via the USB to the printer (as with normal printers),
the length and the shield of the USB cable matters.

Simple said, the magnetic field or any other interferences will goto the printer by using the cable which is not shielded properly.

But as you print from SD, then there are local interferences possible, like any electrical equipment which transformers in it, meaning generating magnetic fields while switched off

8

I’m printing with my printer plugged on a UPS and never had that kind of problem. Recently I installed a Rapsberry Pi to remote monitor the printer. And then I experienced some random resets. I had used the stock USB cable to connect the RPI to the printer. Bad idea. You definitely need a shielded USB cable.