Troubleshooting

The board is not turning on, you hear the power stage buzz noise but no melody

• Can happen if you haven't flashed the chip properly, make sure you hold the button while flashing so the chip is always powered
• The chip might be defective, can you connect to it with st-link utility ?
• The 5v or 3.3v dc-dc converters could be defective, you can usually find the same dc-dc converters on the sideboards

The board is not turning on, you can't hear the power stage buzz noise, and no melody

• the first TIP127 mosfet might be defective
• Check that power is connected and voltage is >36V while flashing. If the board draws more than 100mA in idle, it's probably broken

The board is turning on as soon as the battery is connected

• The first TIP127 mosfet is shorted, check it with a multi-meter

You are unable to unlock the chip or flash the firmware

• Check this section

The board turns on/off/on/off.....

• Make sure all option bytes are checked in st-link utility

The board is turning off

• Check the Battery troubleshooting section

You hear beeps

• Check Diagnostics section
• Please also check in the Wiki the troubleshooting section of the variant you are using

The board turns on, there are no error beeps, wheels are not spinning

• Make sure you did proper Auto-Calibration

Wheels are not spinning in a smooth/normal way

• You board might have phases/hall wires mapped in a different way, check firmware compatibility section