3DPrinting

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3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

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Elegoo Neptune 3 no longer turns on (self.3dprinting)

submitted 9 months ago* (last edited 9 months ago) by papalonian to c/3dprinting

32 comments fedilink hide all child comments

Hi all. Yesterday, my printer stopped responding to commands from the touch screen, so I shut the printer off and turned it back on. Now, the printer and screen turn on (power fan spins and screen backlight comes on), but the screen does not display anything, and the printer cannot be reached via USB. Multiple power outlets and cables have been tried, and all cables inside the main chassis are securely connected except for the Z- cable (which has been replaced by a BLTouch). There is a single red LED on the motherboard that lights up when the machine is powered on. Does anyone have any ideas how I can try to diagnose this? I've sent an email to elegoo, but I've heard it can take weeks to get a response, and I'm trying to get things ready for a DnD campaign starting this weekend.. thanks for any tips.

Edit: for anyone finding this post looking for help, you're SOL. Elegoo responded to me, and after sending them a couple pictures, they've determined my motherboard to be dead, and are not willing to provide a free replacement since I'm just outside of warranty. Now I'm torn between getting a new motherboard (waiting on a quote from them) or just saving for a better printer.

Edit 2: after some very light complaining, Elegoo is making right and sending me a new motherboard free of charge.

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[–] [email protected] 1 points 9 months ago (1 children)

I found this diagram for V2.2 which looks the same. The lit LED is D5 which is the one you mentioned on the 3rd page. It looks like it only indicates that the 5V to 3.3V regulator beside it is working and has power.

[–] papalonian 1 points 9 months ago

That LED being lit at least more or less confirms that power is not the issue. Thanks for digging that up.