Helping neighbor with her network extender. It was not working & system light was red (all others blue). I powered off & back on & watched as other lights changed to blue. System light was last & was blinking red, then changed to blue for a second then changed to green. No mention of green lights in troubleshooting guide. No change to modem or router. Internet connection to iPad working fine. Samsung network extender had been working. Repeated process & System light is definitely green. Extender is not working when checked with #48. Does anyone know what a green system light indicates?