After many requests, I have decided to flash the RCH Heli's 3GX gyro to version 3.0 on the firmware. In the next videos, we will be going through the full setup of the gyro.
This system is so old that if it did die, there is likely nothing that can be done to bring it back. V5 is not a good version, V2.1 in my opinion was the best of all of them, just sucks that it was missing some good features. However, there is a reason these are no longer made. I would look at upgrading to a newer, better gyro such as an iKon.