Mechanical
Noise/Hum/Vibration
Quick Check
Symptoms | Quick Check | ||
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Noise/Hum/Vibration | 1. | Verify that the vents on the bottom system are | |
• | Buzzing noise |
| free of dust and other obstructions that might |
• | Rattling noise |
| inhibit proper airflow through the system. . |
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• | Ticking noise | 2. | Launch Applications/Utilities/Activity Monitor. |
• | Squeaking noise |
| Determine whether an application or process is |
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| consuming a high percentage of CPU bandwidth. |
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| CPU intensive applications can cause the fans |
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| to run fast in order to maintain the proper |
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| internal system temperatures. If needed, quit the |
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| application or restart the system to resolve the |
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| issue. |
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| 3. | Play sound sample at loud and soft volume |
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| levels to determine if the noise is caused by the |
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| speaker or the amplifier circuit. Jump to ‘Distorted |
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| sound from |
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| additional information. |
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Mac mini (Late 2009) Symptom Charts — Mechanical 76 |
