I had a bit of a crash and had to replace my compass cable. After this repair, I have charged both my batteries and when insert them, I press the battery button once, then hold it for two seconds till it beeps as you should. The green light under the drone blinks once, then turns right off. The 4 green bars and the red button lights are all on, during this a startup process, but quickly shut off and nothing. I took it apart again today to make sure all cables inside were intact and connected, all seems good. Any ideas for repair would be appreciated.