New Floodlight not powering on with live wires and switch/breaker on

[kplescia]

I replace two floodlight cameras with smart floodlight cameras. After replacing the second one on day 2, the first one stopped working that was replaced on day 1 (worked right before I turned power off). I swapped with an new one and even with the old floodlight and still not working. The circuit breakers are on and the switch is on that controls both floodlights that are on opposite sides of the back side of the house. The tester device indicates the power is live and power is reaching the floodlights, but they will not power on. I am not sure why the live wires on the one side won't power on any floodlights anymore. The wires are secured in the correct positions. Could something be wrong with the junction box behind after flipping the power too many times?

 

[Baddegg]

Have you checked the neutrals? Apologies have just seen you are in the states…..hang on I expect @Megawatt will be along soon