The mystery was discovered…
Power company folk came to the house and checked the outdoor xfmr voltage and wiring connection, no issue was found. The voltage reading data is acceptable…
1. I replaced both LED light bulbs inside the ceiling light has dimming issue, it works fine… If replacing only one bulb and keep the other existing bulb, the dimming issue still exists. Total cost $3
2. The electrican checked voltage, replaced the defective 240V/120V, 25A/2P GFCI breaker serving the dryer with a new 30A/2P GFCI breaker, the issue solved. New Eaton GFCI breaker costs $165. Labor $70.
