when I connected to Betaflight, it showed "no valid receiver signal is detected". Long time ago I burned my quad and left it for a long time.I wanted to fix my quad. motor FC ESC all broken.So I bought new motor FC ESC and capacitor. I'm sure DJI remote controller connected air unit, because both showed green, camera is fine as well. I also can play Liftoff with my remote controller. Should I buy a new DJI FPV air unit(without camera)?and when I watch DJI FPV goggles, there is a quad icon on the bottom-left corner, Does that mean signal or battery? and why is undulate?I changed another battery but still undulate.and when plugging the battery, a few seconds later it will show lower battery on the bottom-right. need help~
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