Another thing to check is the mute switch, as if it’s in-between mute and unmute, the green light won’t be on, and neither will the red which indicates that it’s muted. This happens to mine as well, and it goes back to working fine once I click the switch over to either side. To help your particular troubleshooting or anyone else with this problem, the speakers still work when it’s the switch being in-between, and they won’t work if it’s a power issue like Josh was talking about.