The lights have gone off to my Cerbo-S GX, multimetre says it’s still getting 50v DC power. I assume its time to try a warranty return, but thought I’d put it out there, any other ideas?
But is the Cerbo working? Meaning, can you access it through Remote Console or VRM?
Because you have an option in Cerbo to turn off the LEDs, option that if it’s enabled will turn off the LEDs, but when turning them back on will not work up until a new reboot (this is trailing bug not solved since forever, despite reporting it…)
So try first a cold start, meaning disconnect the power and then connect it back.
Wait a while and then check it on VRM if your system works.
Then, if you find it there, access the Remote Console and go to Settings → General → Enable status leds.
And then reboot again.