Toshiba
Relay / Transformer Noise
Oven emits a buzzing or humming noise from the control area when heating.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Vibrating power transformer, Noisy relays, Loose mounting screws, Slight coil buzz under load
How to Fix / Troubleshooting
Safety first: Disconnect power before opening the control panel.
- Identify source: With the panel removed and power briefly applied (only if qualified), carefully listen to locate the buzzing component (transformer or relay).
- Tighten mounts: Turn power off and tighten screws securing the transformer or relays to reduce vibration.
- Inspect for overheating: If the buzzing component is also hot or discolored, replace it or the entire Toshiba control board.
- Acceptable noise: A faint hum can be normal, but loud or changing noises indicate a problem.
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Repair Difficulty
Medium
3/5
Required Part
Oven Control Board (PCB)
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