Spectrum Router Blinking Red

Diagnose in 5 minutes

1. Check the modem lights first. Ignore the router entirely for a moment. If the modem's 'online' or 'internet' light is off or blinking, the problem is upstream of the router.
2. Reseat the Ethernet cable between modem and router. Unplug both ends, plug them back in firmly. A loose connection here is the #1 cause of red-blink.
3. 60-second reboot. Unplug modem AND router, wait 60 seconds, plug modem in first, wait 2 minutes, then router.
4. Check the outage map. If nearby ZIPs are also spiking, it's a real outage — nothing to do but wait.

If the modem is online but router is still red

The Ethernet cable is bad, the router's WAN port is fried, or the router itself is dying. Test with a different Ethernet cable. If a new cable works, the old one was bad (surprisingly common — connectors wear out). If new cable also fails, the router is dying. Swap it at any Spectrum store — free rental replacements take 10 minutes.

Solid red vs. blinking red

Solid red on most Spectrum routers means catastrophic hardware failure — the router is done. Blinking red means 'trying but failing to reach internet.' Blinking is fixable; solid usually means replacement.