FW update broke literally everything  

RE: FW update broke literally everything

Been using 3.14.1 for a few weeks no issues on a MK3s+.   As a tech, I suspect you ended up with a different issue at the same time as the firmware upgrade since installing the older code still indicates an issue, even after a factory reset.

Thermal code needs to calibrate and is part of the safety procedure.  As I have had a printer overheat, I appreciate the safety feature.  Here are some details.  Also the resistance for the thermistor and heater are listed here to check.  At room temperature, the hotend thermistor should have a resistance in the range of 80 kΩ - 125 kΩ.The hotend heater has an expected resistance in the range of 12.3 Ω - 15.1Ω. 

Thermal model calibration

I would ensure all cables are firmly seated on the Einsy.  

RE:

I think I might have just experienced the most insane of coincidences ever.

So the printer worked fine printing better than ever before. All axis worked perfectly. Printer heated to 230 C. 

We can conclude that
1. The FW upgrade actually messed with the stepper motor range (full range was like 3 cm instead of whole axis). I found some other people having problems after upgrade. Factory reset "ALL DATA" fixed this issue. This was FW upgrade related. 

2. When this was fixed by some freak accident without me even touching the printer it seems that the heating cartridge have gone bad. Remember it worked 10 minutes ago before the FW upgrade (i replaced filament at 230C) and I haven't even touched it. However after an hour or so of frustration I started to take things apart and indeed the heating cartridge measured 17 kOhm. Jiggling the wire a bit (extruder side) and it gave me varying results of 500 Ohm to ~17kOhm. 

So I have a new one on order but I still don't understand the odds of hitting both these issues the same 5 minutes on a printer I've used for 7 years without any faults... 

RE: FW update broke literally everything

HI,

I had a MK3S which worked perfectly.  I did an upgrade of the FW to 3.14.1 and to put no too fine a point on it .... it broke.

Version

initially (using prusaslicer) i cannot get a print for the printer I have,  It is a MK3S with a MMU2s sitting on it and I have always used  that setting in Prusaslicer.   Now i get a message that it is a different printer.   I have tried the other options but have the same issues.

Temperature

I was watching the print with the temperature set to 230 deg.  I watched it drop to 215/230.  This has never happened before.  Ironically after you stop a print it wont remove the filament until it heats back up to 230/230.  This happens 80% the way through a small print and the quality looks like it was used for artillery practice with holes and lumps everywhere.   

Even at 215 this should not happen as it is within the scope of PLA (only just)

Same as Massy above, I have used this machine for many years and never had this issue.

I have the XL so I need to have the latest prusaslicer.   Can anyone assist with this issue.

Paul

RE: FW update broke literally everything

Hi all,

A bit of playing around found this one,  the problem is not 3.14.1 it is in the slicer 2.9.2.  The update to the slicer changed two things.  

the speed of the middle layers and the type of infill.

the Mk3  (well mine anyway) did not like the grid infill.  the hot end basically bounced over the first lines of the grid.   Additionally I slowed the above first layer slightly. 

The settings in 2.9.2 are ok for the mk4 with the nextruder but not the Mk3.   Create and save a setting for the MK3 with gyroid (squiggly lines) for infill and if that does not work completely slow down the print.   

This turned my prints from looking like they had pimples back to perfect.

The original settings on the upgrade had my prints  

RE:

I feel the thtead has become sidetracked.

My issue in the end was:

1. FW update messed with axis length/stepper motor calibration. Extruder traveled 3-5 cm thinking it had traveled the entire rod. Factory reset fixed this. 

2. Somehow by some freak accident my heater cartridge of 7 years broke at the same time. So after the factory reset it wouldn't heat up the extruder. 

3. Printer complained about x axis not being straight... No idea why. 

After factory reset and replacement of heater (which I btw wouldn't say is difficult easy as listed by Prusa manual  after 7 years of plastic goo is stuck to the screw and heater cartridge itself) cartridge everything was fine. I can't explain point 3 but now everything is OK. Printed fine for 4 hours.

RE: FW update broke literally everything

Decades of tech troubleshooting work, I have seen so many situations where one thing causes a problem and other things break as well.  I made good money because of things like that.  Of course there are the "finger" errors where someone connects things wrong and thinks it is correct.  

I thought I had a slicer 2.9.2 with my MK3S+ as I was getting error messages that file was sliced for the wrong printer.  I made a change in one of my config files at the same time and that was the issue. 

Massy, glad to hear things are working again.

RE: FW update broke literally everything

HI Robin,

Well said.  It does not matter what you are working with, a coincidental breakdown is sooo annoying.

May I ask what you changed and then reversed to fix the wrong printer message.  Although mine is now printing perfectly I still get the message

Thanks

RE: FW update broke literally everything

If I remember correctly, I changed the printer to a MK3S+ and got the message.  I removed the "+" sign since it wasn't listed in any of the gcode I had created before when I was looking and trying to figure out what happened with the update.  I would have to look at my gcode files from the time again.  Change was in the printer profile I was working with.  Just looking through my printer *.ini files and I see the change from the old one to the current one.  I make some changes via a text editor so I have automatic backups of the old files.

> printer_model = MK3s+       Fails

< printer_model = MK3S        Works   - And was in all my old gcode files as the printer model.

Remove the plus sign and all is well since.  

It was during a printer upgrade to ASA parts, and major overhaul, move to steel nozzle and new material that I have never printed with before.  Many things at once and not enough notes which is my fault.