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i3 MK3 suddenly dead  

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lutz.b2
(@lutz-b2)
New Member
i3 MK3 suddenly dead

Hey there,
I printed some parts yesterday and normally switched the printer off afterwards. Today I installed a Raspberry Pi3+ with external case for octoprint. I connected the Pi (still powered off) with the USB cable from the i3 package. I moved the x axis by hand in order to check the placement of the cables and then powered the printer on. The only reproduceable thing happening now is a very short light on the LCD. I thought of some short circuit somewhere and started to remove every cable from the electronics. Now only the powersupply is connected and I only get a short blink of the green led near the reset button and the red led above the 15A fuse when powering on. I thought about a damaged flash and tried to reflash the firmware from within sclic3r, but avrdude times out.

Any suggestions? What can I try now?

Posted : 13/09/2018 3:21 pm
RH_Dreambox
(@rh_dreambox)
Prominent Member
Re: i3 MK3 suddenly dead

Did you use a separate power adapter for your Raspberry?
A Raspberry Pi3+ pulls so much power that your MK3 can not handle that load so you must use an external power adapter.
Have you checked that the fuse in your MK3 so that it is OK?

Bear MK3 with Bondtech extruder

Posted : 14/09/2018 3:55 pm
lutz.b2
(@lutz-b2)
New Member
Topic starter answered:
Re: i3 MK3 suddenly dead

I did not yet power the Pi at all. The only connection was the USB cable to the Rambo board.

Meanwhile I had contact with the support team and get a replacement PSU.

Posted : 14/09/2018 5:01 pm
lutz.b2
(@lutz-b2)
New Member
Topic starter answered:
Re: i3 MK3 suddenly dead

Problem solved with the new PSU. 😀

Posted : 19/09/2018 2:32 pm
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