A loud, noisy microwave can be disruptive and annoying, especially if it’s located in a common area of your home. Danby microwaves are known for reliability, but some models can be quite loud during operation.
In this article, we’ll cover the common reasons for microwave noise and provide actionable tips to minimize or silence the sound on various Danby models. With simple adjustments and troubleshooting, you can have a quieter, more peaceful microwave experience.
Reasons for Microwave Noise
Before detailing solutions, let’s first understand why Danby microwaves generate noise:
Most microwaves have a built-in vent fan that pushes hot air out while cooking. This fan spins at high speeds, causing whooshing sounds. If the fan blades become damaged or collect debris, the airflow is disrupted, leading to louder turbulence.
The magnetron tube converts electrical energy into microwaves to heat food. As the microwaves are generated, the tube vibrates, causing an audible humming or buzzing. Over time, the tube’s components can wear out, making these sounds more pronounced.
Internal components like the turntable ring, roller guide, or door latch can become loose over time. This allows vibration and rattling noises as the parts shift during microwave operation.
Microwaves require high voltage to power the magnetron tube. The inverter circuit converts lower household voltage to this high voltage. Some inverters, especially older ones, can emit a high-pitched squeal during the voltage conversion process.
Now that we know the source of microwave noise, let’s discuss solutions.
Simple Sound Reduction Tips
Here are some basic tips to dampen noises from your Danby microwave:
- Lubricate parts: Apply a small amount of lubricant like cooking oil or grease to the turntable ring and roller guide. This prevents squeaking and scraping noises.
- Adjust door: If the door is misaligned, it can rattle when closed. Carefully bend the door tabs to hold the door more firmly against the chassis.
- Add dampening: Place adhesive-backed rubber cabinet bumpers on interior surfaces to absorb vibrations and dampen sound. Line the interior cavity with non-metal shelf liner for more absorption.
- Level the unit: An unleveled microwave is prone to humming and rattling noises. Place the unit on a solid, level surface, using shims to precisely adjust as needed.
- Clean the fan: Use compressed air to dislodge debris on the fan blades. A clean fan allows proper airflow, reducing turbulence sounds.
These simple solutions provide a good starting point. For more stubborn noise issues, continue reading for additional tips.
Advanced Troubleshooting for Noisy Danby Microwaves
If basic sound dampening doesn’t resolve the noises, then more investigation and troubleshooting is likely needed:
Listen Closely to Identify the Sound
Carefully listen and pinpoint the location and characteristics of the bothersome sound. This helps diagnose the root cause. For example, a high-pitched squeal likely indicates inverter trouble, while a loud whooshing is probably the vent fan.
Inspect and Replace Worn Parts
Examine visible interior parts like the stirrer fan, magnetron, waveguide cover, and door hinges. Look for damage like cracks or loose connections. Replace any deteriorated parts that may be rattling or vibrating.
Test Components with Multimeter
Use a multimeter to check parts like the high voltage capacitor, diode, and magnetron tube. If readings are outside the specification range, replace the faulty component. This helps reduce abnormal humming and buzzing.
Add Vibration Dampening Mounts
Hard-mounting can transmit vibrations that cause noise. Adding rubber mounts between components and the chassis helps absorb this energy. Pay special attention to mounting the magnetron and transformer.
Modify Spinning Turntable
The rotating glass turntable can resonate and amplify noise. Try placing vibration dampening pads under the turntable ring or replace the glass tray with a microwave-safe plastic tray.
Upgrade Vent Fan Motor
If the main blower motor is loud, consider replacing it with a higher quality fan designed for quiet operation. This directly address the airflow whooshing noise.
Install External Vent Duct
For models with top or rear vents, attach a vent duct to redirect the hot exhaust air outside. This removes the sound rather than muffling it. An exterior vent kit tailored for your model may be available.
Add a Noise-Reducing Enclosure
For severely bothersome microwave noise, place the unit inside a secondary enclosure lined with acoustic insulation like mass loaded vinyl. Line ventilation holes with exhaust mufflers to allow airflow while containing noise.
With targeted troubleshooting and repairs, you can successfully reduce unwanted noises from your Danby microwave. Be sure to address safety concerns like proper grounding, ventilation, and leak testing when working on microwave components. With patience, most annoying humming, rattling and whooshing sounds can be eliminated.
Tips for Specific Danby Models
Certain Danby microwave models are prone to particular noise problems based on their design. Here are some model-specific tips:
- Lubricate the turntable ring and tighten door latch screws to eliminate scraping and rattling noises.
- Replace the stirrer fan motor if excessive humming is present. Access it by removing the waveguide cover.
- Add insulation like polyfill stuffing inside air ducts to muffle the fan blowing sound.
Danby Designer DMW1951BLS
- Adjust or replace the door latch assembly if the door rattles excessively.
- Place small rubber feet under the unit to reduce vibrations transmitted through countertops.
- Clean the vent fan blades and consider upgrading to a quieter replacement fan motor.
Danby Contemporary Classic DMW7700SLDD
- Remove and remount the magnetron using rubber isolators to reduce humming from vibrations.
- Lubricate moving turntable parts and ensure the glass tray is centered properly.
- Install an inline exhaust muffler to lower the external venting noise.
Danby Designer DMW099BLSDD
- Add acoustic damping pads inside the unit near the magnetron and other humming components.
- Replace the high voltage capacitor if squealing or whining noises come from the inverter.
- Remount any loose interior parts like the waveguide cover that can rattle against the chassis.
Maintaining a Quiet Danby Microwave
To keep your Danby microwave running quietly for the long haul:
- Periodically inspect for loose screws, worn parts, and accumulated dirt/grease.
- Clean the vent fan blades, cavities, and turntable ring with compressed air.
- Test components like the magnetron, inverter, and capacitor and replace if out of spec.
- Lubricate movable parts like hinges and rollers with microwave-safe lubricant spray.
- Listen for changes in sound over time. Address new noises right away before they worsen.
- When necessary, don’t hesitate to replace particularly loud components like the fan motor or transformer.
With attentive care and maintenance, your Danby microwave can operate reliably for years without excessive noise disturbances.
Warning Signs to Never Ignore
While addressing microwave noise, be alert for any signs of potential safety hazards:
- Sparking or arcing inside the unit
- Visible burn or scorch marks
- Microwave energy leakage (disturbing operation of wireless devices placed nearby)
- Overheating, smoking, or burning smells
- Loose or damaged door, hinges, or latch
If you observe any of these warning signs, immediately stop using the microwave and have it inspected by a professional service technician to identify and resolve the fault before continuing operation. Safety should always be the top priority.
Silence Your Danby Microwave for Peaceful Cooking
Dealing with unpleasant humming, rattling, or whooshing from your microwave can really be frustrating. But in most cases, the noise can be successfully reduced or eliminated with some targeted troubleshooting and repairs.
Use the tips in this article to quiet your noisy Danby microwave and restore some peace to your kitchen. With the proper techniques, you can make your microwave as silent or close to silent as possible.