flight controller issues

I believe I have a dead FC, but wanted to run by my approach & findings with all of you to see if you have anything else to add. Starts off when I was attempting to install a Hellgate Buzzer onto an SPF3 FC. Things didn't go very well, and long story short, it ends with the quad not working...

I have been facing this problem of calibrating the DJI n3 board using the DJI Assistant 2 software. Everything is calibrated except the IMU which is showing an error of magnetic interference. Please help me out with calibration. I have triwed it for more than 20 times at different places but...

I am having a problem with my seriously pro f3 flight controller where one of the motor channels has a delayed response to stick input. I can see it on cleanflight where when I raise the throttle, motor channel 3 stay at 1070 (or whatever my min throttle is) while the others raise normally until...

Started a new build. Tarot zyx-m flight controller. I set everything up in the software and plugged Al the pluges. The transmitter and receiver are set. In the tarot manual I read that to start the motors I need to push the sticks in the transmitter down and towards each other or down and away...