On it's 4th flight my PV2+ met up with a tree resulting with me replacing the shell. No props were damaged. After replacing the shell I tested it without props then after it appeared to test OK I put on the props and test flew it. Everything appeared to work as it should including the camera except the left front light does not light up red in GPS mode during flight, only the front right arm lights up steady red. It was this arm that required the shell replacement. Upon further checking all lights on that arm work except the red . Suspecting a loose wire I removed the top cover but no loose wires were found. I even unplugged and replaced the connectors to the board. I did not remove the board and motor to inspect the bottom of the board or the LEDS. Any suggestions? Thanks