Hi there!

I had the same problem...Here are some pictures:

This is such an informative well written post. Thank you Hecot. I'll be saving this for future reference.

I had the same problem with my Davinci 1.0A that it stops without a reason in the middle of a print! Short print jobs usually went well but on longer print jobs I had these random resets. There was no Error message on the screen - it simply stops the print and returns the extruder to home position.

When I looked in the Internet I found other people had this problem too but I couldn't find any solution. A general recommendation was to add extra power line filters or power conditioners. So I tried all kind of stuff to improve the power supply - I've added ferrite coils, extra capacitors, even external power supplies ... I spend so much time and wasted prints as theses random failures are very hard to find ...

To cut a long story short: It turns out that a loose contact of the heating element connector caused this trouble! This connector is exposed to heat and vibration so once in a while it looses contact making the firmware to assume the heating element failed!

As the warranty of the printer already expired I simply removed the plastic housing of the connector, pushed two stripes of shrinking tubes on the cables and stick the contacts back together. Then I've made a solid connection by soldering the contacts together, shrinking the tubes - no more trouble!!! The advantage of reusing the old contacts is that they act as a strain relief and the cable length stays the same. 

Here are some pictures:

Before soldering:

Finished:

I hope that this will help some of you facing the same problem!

Take care!

I had exactly the same problem.
Probably I have found the reason and a solution.
Since I work in the way described below the problem stays away, but I'm not sure this is the solution, so please:
- correct  me  if I am wrong or
- testify if this is the right solution.

I think Jin described the problem. Above Jin writes: "I am suspecting that da vinci is not good at reading more than one model/model which is not in one whole piece".
That was my experience too: the problem occurred at my Da Vinci only with multiple objects.

I tried the following solution and until now the problem has not occurred anymore
1. Put on your plater the multiple objects you want to print.
2. Save them in a tempory .stl file (not gcode)
3. Hit the "Delete all" button in slic3r, you plater is now empty
4. Open the tempory saved .stl file, remark: it is now ONE consolidated object on your plater
5. Adjust your slic3r settings and generate the gcode file.

Does this also work at your place?

Andre
The Netherlands

I had/ have a similar issue.

See this thread: http://www.soliforum.com/topic/12654/da … eshooting/

My situation:

Symptoms
Prints would randomly fail mid extrusion. Extruder and bed would stay on. Printer menu still accessible, printer temperature/ progress information was displayed on the computer- sometimes it would be continuously updating, other times it would seem to stop sending data, but Repetier still recognized that the printer was connected by USB. Reflashed multiple times, problem persisted.

On the LCD, the Buffer would have 1 item waiting and it would never change.

Initial Troubleshooting
1. The failures wouldn't occur at the same point in the print if I retried the job. I.E. first failure, it fails on the 21st layer. Reload same exact Gcode and immediately begin- second failure occurs at the 32nd layer

2. Laptop and Da Vinci were both run to the same surge-protected, battery back-up enabled power strip. Failure still occurred

3. Much more likely to fail on a longer print

4. Print failure occurs on SD card or through live USB print

5. Disabling the vibration protection feature in the Slicer settings didn't resolve the issue

6. Tweaking the cache size didn't help

7.  Baudrate set correctly

Attempted Fixes
1. Cooling the printer's motherboad, motors, etc. had no significant effect on print success
2. There were no 'wire snags' pulling connectors apart causing print failure after X number of layers
3. Tweaking settings as mentioned above

Temporary solution:
When I reflashed to stock XYZWare, all problems disappeared immediately and they haven't returned after about 90 hours of printing.

It's been suggested that DaVinci on Repetier has problems printing multiple small items. Also, supposedly 0.92.6 may have a fix for this issue.

I find the machine is extremely sensitive to static electricity. It seems every time I get near it or touch it while it's printing, it beeps. Today, I hit the light button to check on print progress and the print cancelled. This is this first time it has ever done that.

Maybe over time, the firmware slowly gets corrupted to the point where the machine starts failing more often. Time to flash Repetier maybe?

Sounds like yours has a ground problem. Can you measure continuity between the ground prong on the power cord and the metal frame? Otherwise maybe your home wiring is not earth grounded at that outlet atleast.

Maybe over time, the firmware slowly gets corrupted to the point where the machine starts failing more often. Time to flash Repetier maybe?

I have printed several previously with and without supports but never using the other cartridge to print the supports.

When I am printing an object with supports from the second extruder it will not finish, but when the supports are turned off or printed with extruder one it is able to complete the print.

Why would this be happening?

I think Jin described the problem. Above Jin writes: "I am suspecting that da vinci is not good at reading more than one model/model which is not in one whole piece".
That was my experience too: the problem occurred at my Da Vinci only with multiple objects.

I tried the following solution and until now the problem has not occurred anymore
1. Put on your plater the multiple objects you want to print.
2. Save them in a tempory .stl file (not gcode)
3. Hit the "Delete all" button in slic3r, you plater is now empty
4. Open the tempory saved .stl file, remark: it is now ONE consolidated object on your plater
5. Adjust your slic3r settings and generate the gcode file.

Does this also work at your place?

Andre
The Netherlands

Not sure it is a coincidence or what.

If I keep my usb cable to my computer the whole time(without closing xyzware, my print won't fail. It happened couple of times.

Try and tell us if it works.

Honestly I am not sure how it works after you press print in xyzware as to whether you can unplug your computer or not. I have not printed anything large yet, but I just leave my laptop plugged in... Are you saying you unplug your computer after sending the file to the printer? perhaps the file is too big and it doesnt all fit on the sd card on the printer, so when it runs out of memory and tries to send more the computer has to remain hooked up to do so?  This is just speculation on my part though..

If I keep my usb cable to my computer the whole time(without closing xyzware, my print won't fail. It happened couple of times.

Try and tell us if it works.