Here is a troubleshooting guide for the FuriousFPV flight controllers that you can follow to find out how to fix, or figure out if you need to get a replacement for your flight controller. We currently guide guides for:
To view the full table click on the image, or if you have any questions/suggestions let me know so I can add them to the guide.
Fortini FC Troubleshooting Guide
Kombini FC Troubleshooting Guide
Piko FC Troubleshooting Guide
Radiance FC Troubleshooting Guide
AcroWhoop Troubleshooting Guide