Drone won't "fully" power on unless connected to battery and computer Micro-USB at same time.

[tbraun]

Hey everyone,

Starting yesterday, when I plugged the battery into my Quad, it would not connect to the FPV Goggles or transmitter (red LED on FC would still illuminate). After debugging, I found that if connected to both the Micro-USB from my computer (or battery bank) and battery at the same time, everything would function normally. I was wondering if you guys had any recommendations on how to further debug/fix the issue.

I am using a:
FrSky Taranis X9D+ 2019 SE Transmitter
DJI Goggles & Air Unit
FrSky Archer M+ micro Receiver(access)
Lumenier LUX F7 FC

Thanks

 

[MCCV]

I had the same problem, it has to do with you 5v converter on your FC, ESC or PDB. For me it was a ground pad shorted to a 5v, after fixing the short it worked perfectly fine. Try checking and or resoldering all your connections. If that doesn't work, replace the part that your 5v comes from.