EFeru/hoverboard-firmware-hack-FOC
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Updated Troubleshooting (markdown)

Candas1
2022-07-04 08:53:29 +02:00
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Troubleshooting.md

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The board is not turning on, you hear the power stage buzz noise but no melody
The board is not turning on, you can't hear the power stage buzz noise, no melody, the led on the mainboard is off
* the top TIP127 mosfet might be defective (Q2 in [schematics](https://github.com/EFeru/hoverboard-firmware-hack-FOC/blob/main/docs/20150722_hoverboard_sch.pdf))
<br>
The board is not turning on, you hear the power stage buzz noise, no melody, the led on the mainboard is OFF
* Can happen if you haven't [flashed](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Compiling-and-flashing-the-firmware) the chip properly, make sure you hold the button while flashing so the chip is always powered
* If the led on the mainboard is ON when you press the button, but the board doesn't stay ON when you release the button, you might want to check if you have [another variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Firmware-Compatibility#mainboard) of the board
* The chip might be defective, can you connect to it with [st-link utility](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/How-to-Unlock-MCU-Flash) while keeping the button pressed? Even if you feed the board with 3.3v from the st-link ?
* The 5v or 3.3v dc-dc converters could be defective, you can usually find the same dc-dc converters on the sideboards
* If the board draws more than 100mA in idle, it's probably broken
<br>
The board is not turning on, you can't hear the power stage buzz noise, and no melody
* the top TIP127 mosfet might be defective (Q2 in [schematics](https://github.com/EFeru/hoverboard-firmware-hack-FOC/blob/main/docs/20150722_hoverboard_sch.pdf))
The board is not turning on, you hear the power stage buzz noise, no melody, the led on the mainboard is ON
* If the led on the mainboard is ON when you press the button, but the board doesn't stay ON when you release the button, you might want to check if you have [another variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Firmware-Compatibility#mainboard) of the board
<br>
The board is turning on as soon as the battery or charger is connected