Ok guys I am at my wits end here. My son bought a Arris C250 FPV racing drone that worked great for a few days and then suddenly it fried the FC mid flight. I could not return it so I decided to crash course myself in racing drones. I replaced it with the Omnibus FC. Worked great for two flights then it fried. Same as the last one. I decided it must be the PDB so I bought the Omnibus 4 in 1 to go with it. Again flew great for a couple days and now I have a different problem. The FC has not fried but I am not getting any power to the 5v or the USB 5v. I was running my receiver and FPV off of the 5v as suggested by Omnibus. I can plug it into beta flight everything seems fine. The 9v is powered up fine on the board. Let me know what you guys think!

Anyone?