Customer reported that the built-in Frigidaire microwave was not powering on. Diagnostics confirmed a faulty noise filter board, which interrupted power flow. We replaced it with an OEM part, and the unit powered on and operated normally.
• Confirmed no power to display or controls
• Tested line voltage and internal fuses
• Identified failed noise filter (line filter board)
• Removed microwave from cabinet housing
• Installed OEM noise filter board
• Reassembled and tested full heating and safety functions
When a microwave won’t power on, one of the most overlooked components is the noise filter board. This Frigidaire FGMO226NUFA repair in Raleigh (ZIP 27608) involved replacing a faulty line filter that was blocking power to the unit.
The noise filter (or line filter) protects your appliance from electrical interference and surges. When it fails, the microwave may appear completely dead — no lights, no response, and no internal sound.
After replacement, the microwave powered on normally and heated without issues. The customer avoided the cost of a full replacement by repairing a single failed component.
Swift Appliance Repair specializes in Frigidaire microwave diagnostics and repairs, including noise filters, magnetrons, and control boards. Fast, professional service for built-in models throughout the Raleigh area.