Have recently been using the Omnibus F4 i got from this store and was all working fine up until the other day.
Somehow the signal wire on an ESC was caught and detached on the ESC side (when i was transporting the quad). Not knowing this at the time, i tried arming it and only 3 motors span up. Since then i have replaced the ESC and solder joint, but now the FC will not show any signs of life whilst plugged into the USB or through the Power pack.
My question is, is it possible to fry the F4 board when its armed without a signal wire connected ? My guess is yes because i can't think of any other reason it would be dead.
If so, is there any way of bringing it back to life now its all wired up properly again ?