Hi, I've recently got the chimera 7 and I can only fly about 100m before failsafe. I've got 2 other quads set the same which works perfect. When I go into tx/rx a betaflight message on my radio master tx16s comes up. Only on the one quad. Please help I'm pulling what hair I've got left out

Hi Stephen,
what message do you get?

Failsafe on Crossfire at 100m is bad unless you flew through a bando or high RF area such as around a cell tower.

Check region settings, make sure you are flying 868MHz EU or 915MHz rest of the world mostly.

Double check your antenna, both on receiver and transmitter. Often the antenna can be broken internally and should not much external damage.

I'm having the same issue with one of my Nano RXs - The power level resets to 0 after the lipo is unplugged - Only happens with this one unit, so I am assuming there is something wrong with it - Check the power level right after you plug the battery in, and see if it got reset to 0