Comment on Elegoo Neptune 3 no longer turns on
papalonian@lemmy.world 8 months agoI also suspected a firmware issue but hadn’t yet tried anything. I just loaded the stock firmware on to an SD card and still no response from the printer.
I managed to find a circuit board diagram for what I believe is my main board. There are several indicator LEDs, but I think most of them are for indicating that a heating element or fan is turned on, I only see one LED in the diagram that looks like it should be on with the printer.
I’ve just tried completely disconnecting the BLTouch and reconnecting the stock cables. No change in behavior.
Note that in this picture the nozzle thermistor has been disconnected, but the behavior is still the same.
FuglyDuck@lemmy.world 8 months ago
When you flashed the firmware, did it do anything to show that it was taking the firmware?
either way, I’m thinking you’ll have to get help from Elegoo- either instructions to clear it, or a new board. Apparently, though there’s two boards in those printers that need flashing. (the main board and the LCD touch screen.)
papalonian@lemmy.world 8 months ago
I was unable to flash the firmware. Putting the SD with the stock firmware does nothing to alter the behavior. It’s still just a blank screen with the backlight on.
Here’s a link to the PDF I found of the board’s schematics, if you’re curious. The LED that lights up for me is on the 3rd sheet. All the others are connected to the hotend, bed, fans etc.
VehicleTree@lemmy.ca 8 months ago
According to elegoo’s firmware instructions, the screen itself has updatable firmware too. Maybe you could try updating that as well
papalonian@lemmy.world 8 months ago
Thanks, I had forgotten about the screen firmware. Unfortunately, I just tried that, to no avail.
FuglyDuck@lemmy.world 8 months ago
nothing that says what it does.
(would that be too much to ask for… Elegoo? or whoever made that board. those LED’s cost money. It’s such a shame they don’t have a top level “troubleshooting” guide that lists what they do… /sigh)
papalonian@lemmy.world 8 months ago
That LED is normally on. It’s been about a year since I’ve had the chassis open so I can’t recall if there are normally more than one on when it first boots up or if it’s only the one. Looking at the diagram it seems like it’s just a main power indicator.
Thanks for taking them time to respond. You may not have been able to fix the problem, but you’ve at least assured me there’s no other troubleshooting steps I can take until I hear from Elegoo.
I guess my DnD players will have to live with quarters and pen caps in lieu of customized minis. Haha.
papalonian@lemmy.world 8 months ago
Hey, in case you were curious, Elegoo emailed me back and diagnosed it as a motherboard failure. And since I’m a couple months out of warranty, they won’t send me a new part. 😔 I’m now debating if I want to pay for a new motherboard and wait a month to get it, or just save up some cash and buy a better printer a month from now.