Device light not lit ex6110 ac1200 other 3 lights ok I have done a WPS reset but still the same

Not sure why this says problem solved but I'm having the exact same issue. My device light has always been on until today. I keep 3 devices connected to it; however, now my connections work for short periods of time. For streaming, every 10-20 minutes I drop service and have to recast. So, is the light going out a warning sign that the device likely needs to b stripped down or replaced?