SKR E3 DIP V1.1 Rebooting Issue


Without a doubt the SKR E3 DIP V1.1 rebooting issue while printing had caused me some major headaches. However after troubleshooting I found an answer that may help others.

The Issue

All was well and dandy until a new replacement part cooling fan was installed. Moreover this fan hand been soldered badly by the manufacturer. Consequentially the wiring become loose presumably through vibration, as it had a strain relief. Naturally the wiring caused a short-circuit and fried the original SKR E3 DIP V1.0 board. I was more annoyed with myself for not checking the new fan on this occurrence. Why didn’t I? Pass, I broke my own rule and paid the price.

Anyhow after getting the SKR E3 DIP V1.1 as a replacement, all was fine and it was happily running the usual test calibration cubes. In order to check that I didn’t knock the belt tensioners while installing the new board.

However once I began printing anything longer than 20-25 minutes the printer would stop printing, no errors, no thermal runaways. Naturally I start to look into the likely issues.

Trial and Error

Firstly I was running a newer firmware version than on the original SKR E3 DIP V1.0, so I reverted back to the same firmware version, but still the same issue. Secondly I was trying out the PrusaSlicer for the test cubes, so let’s try with another slicer to see if it will stop the SKR E3 DIP V1.1 rebooting issue. With this in mind I changed slicer to Cura and then Simplify3d. But still the issue remained. However I still found myself re-checking the Marlin firmware for errors multiple times.

Without a doubt at this point I was scratching my head wondering what could be the cause. Perhaps the stepper motors are over heating, nope 3-5˚C above ambient. Ambient temperature in enclosure 25-30˚C. For this reason I started to believe that a wire was shorting some where. Clearly my Creality Ender 3 Pro was feeling a bond with C-3PO at this point. Importantly after checking every wire and replacing all the connectors I felt sure I solved the issue. NOPE! Ok, let’s double check the PSU connector for the 5th time. FFS the issue is still there.

Food for thought

Consequentially at this point my mind was made up, it had to be the board. But what? Is the board faulty? It’s a different version to the original, yet not much had changed. Why would it print one minute and not the next? Are the stepper drivers over heating? Is the Microcontroller over heating despite the heatsink? But why would it be getting much warmer than the original? The boards cooling fan had been performing in its usual full speed and noisy manner.

Ok do I get a replacement fan to check that? However even that could still result in parts of the board overheating in the Ender 3 Pro board enclosure. Luckily before the original board fried and I started experiencing the rebooting issue on the SKR E3 DIP V1.1. I had printed a new external board case that used a 140mm fan, so let’s give that a go.

Solution

While cursing the temporary transplant into the new case and mumbling to myself like Muttley from Dick Dastardly. I temporarily attached the housing to the inside of the printer enclosure. In order to ensure no more re-wiring was required with exception of the 140mm 12v fan into the buck convertor.

Finally the board and wiring is moved to the new case, bed warmed up, hot end is to temperature and ready. Next I selected a 2 hour file to print. Needless to say I was on tender hooks expecting the the printer to show once again the rebooting issue I have been experiencing with the SKR E3 DIP V1.1. However none arose and now the printer is back to its usual self.

SKR E3 DIP V1.1 Reboot Fix

While I am uncertain if replacing the original creality board cooling fan would have solved the issue of the SKR E3 DIP V1.1 rebooting. It does appear that heat was the issue in this instance. So if like me you are experiencing not only the rebooting issue but also hair loss, have a good look at the boards cooling fan.

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