I attempted to power up the C5 controller this morning. It initially showed some signs of life, but soon it stopped working and refused to charge. I tried holding the power button for 15-20 seconds while plugged in to the charger. It didn't work. Any ideas on how to troubleshoot a problem like this?

Hello, there. Thank you for reaching out. Please know that only the DJI RC-N1 model is compatible with the DJI MIni 2 SE. We encourage you to contact the dealer where you purchased this said remote controller for further assistance. Thank you for your understanding.

Same here for C5 Controller for the DJI Mini 2. An hour ago it disconnected mid-flight although it showed 3/4 battery before.
Remains dead, trying to charge it doesn't light up a LED and also holding the RC power button for 15-20 seconds doesn't do anything. Tried with multiple chargers, seems like a bricked controller. What's next?

djiuser_37TgUJ3KP3s4 Posted at 1-17 15:29
Same here for C5 Controller for the DJI Mini 2. An hour ago it disconnected mid-flight although it showed 3/4 battery before.
Remains dead, trying to charge it doesn't light up a LED and also holding the RC power button for 15-20 seconds doesn't do anything. Tried with multiple chargers, seems like a bricked controller. What's next?

Hello, there. Sorry to hear about this situation. Please know that it's recommended to contact your dealer for further assistance regarding this matter. Should you have further concerns, kindly let us know.