Comment on Biqu B1 - Not heating the hotend

• papalonian@lemmy.world ⁨3⁩ ⁨months⁩ ago

  so which board is defect? The little one in the hotend or the board on the other side of the USB-C cable?

  My money is on the main board inside the printer. The “board” on your hotend (if it’s like others) doesn’t really have any computers or controllers on it, it’s more like a fancy cable connector between the main board and those components.

  If you test the voltage and get nothing, it’s either the main board or the mosfet for the heater. If you test it and it gives you a stable 24v, the problem lies somewhere between the main board and the heat cartridge (cable, connector, the hotend board, cartridge itself).

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  • UncleStewart@sh.itjust.works ⁨3⁩ ⁨months⁩ ago

    Image

    1. Power from PDU = OK
    2. Power to bed heater = OK
    3. Looks like power to the nozzle heater = same results as when checking volts directly on the hotend.
    4. Empty

    #3 goes up to a board back on the printer. This board has multiple outlets, and one USB-C that goes up to the hotend.

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    • UncleStewart@sh.itjust.works ⁨3⁩ ⁨months⁩ ago

      Image
      This is the board that has a USB-C on the outside for the hotend

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      • UncleStewart@sh.itjust.works ⁨3⁩ ⁨months⁩ ago

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        The outside view

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