The HPNA light is only on if a device is using that connection, usually a STB connected via coax (can be over twisted pair in rare situations like apartments). It sounds like your setup uses ethernet which would not turn on the HPNA light.
The previous scene is an excerpt from Brain on Fire: My Month of Madness, and just one of many hallucinations Susannah Cahalan experienced in 2009 during her month-long hospital stay, in which she was diagnosed with a rare neurological autoimmune disease, known as anti-NMDA receptor encephalitis.
In addition, Corsaut played the role of nurse Jesse Brewer in 1977 on the long-running ABC soap opera General Hospital when long-time portrayer Emily McLaughlin was too ill to work. She returned to the role of Helen Crump in two reunion shows, Return to Mayberry in 1986 and The Andy Griffith Show Reunion in 1993.As a writer, she co-authored The Mystery Reader's Quiz Book. On November 6, 1995, Corsaut died of cancer in Studio City, Los Angeles, California, just three days after her 62nd birthday.orsaut first appeared on the long-running Griffith show in 1963 as schoolteacher Helen Crump, who later became the Mayberry sheriff's wife on the first episode of the spinoff Mayberry R.F.D.