What does a solid red Power LED mean on the CAX80?
A solid red Power LED indicates the modem router is in thermal cutoff mode. You should power off the modem router, let it cool, and move it away from heat sources such as a TV, DVD player, or speakers. Keep it vertical in open air to allow proper ventilation. (Page 11)
From the official Netgear CAX80 Modem Router manual, page 11
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