The commenter reports persistent humming in one ear at home after a power-system upgrade.

The commenter reports persistent humming in one ear at home after a power-system upgrade.

• Power lines, wiring & solar: “live in my current home since 2002. Once the upgrade to power system happened I have constant humming in my right ear when home.”
• Neurological symptoms & sleep: “ the upgrade to power system happened I have constant humming in my right ear when home.”

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