Troubleshooting iFlight Borg ESC and Flight Controller Connection

i have the iflight Borg 60RS 60A 4-8S BLHeli_32 4-in-1 ESC and the iFlight Borg 5S F4 Flight Controller w/ ELRS 2.4GHz Rx and I have 2 motor soldered on the esc and the battery lead soldered to but when I plug in a battery I hear the esc turn on but not the fc what could my problem be. I can provide photos if needed