Change to v4.2.7 on Ender 3 Pro and smoke at power up



  • Hi all,
    I just changed my 4.2.2 on my Ender 3 Pro to v4.2.7 to get some silence...
    I took the opportunity to replace the hotend fan to a SUNON one with a DC/DC converter and also install a BLTouch v3.1...

    When I powered up the printer for the first time, I had some smoke so I switched everything off.

    Here are the picture of the complete board and also the damaged area...

    147032986_10221840012462216_5684097448785953118_o.jpg
    147078412_10221840025302537_8713154946249052777_o.jpg
    Any idea ?

    It looks like it is linked to the Y-Axis driver....


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