It looks like your printer did a sudden reset. Avoid printing from Repetier. Print directly from the SD card. The Usb cable is very sensitive to noise and the printer to power surges. Avoid switching neon lights or electric motors on while printing. Or use a net filter or an UPS.
Well, it was static, only printing when it reboots. The power surge I don’t really buy. I have other Arduinos and beaglebones up and running, so I think we can cross that of the list.
About the USB cable. Can noise affecting the USB connection trigger reboot of the printer?
Check if the reset button of the LCD is not pressed against the frame. It might be triggered by the vibrations when printing. If this one is OK disconnect the reset button from the controller board.
The reset is free of the frame and the other reset button is disconnected.
Power cables are ok. Its not like it looses power, it just reboots, kind of like a computer that gets a kernel panic.
I have problems uploading 1.4 to the board, as per other threads that equally are unsolved and several other “odd” things happening, like filament retarding when you press start, the reboots while printing, so I have ordered a new main board. burning a boot loader onto the board didn’t work.
I have modified it to work with a heat bed and the printer just rocks now, other than the issues mentioned.
I just need to be sure the main board is ok, so we are not chasing ghosts.