Editing Macintosh IIsi Troubleshooting (section)

== Audio Problems ==

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{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+ '''Sound Issues'''
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! Symptom !! Possible Cause !! Recommended Action
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| No sound from internal speaker || Speaker contact failure, speaker wire disconnected || Clean speaker daughterboard contacts with pencil eraser; check speaker connections
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| Sound works through headphones only || Speaker contact corrosion || Remove logic board; clean spring contacts on speaker daughterboard
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| Intermittent audio dropouts || Speaker contact fretting || Clean and reseat speaker contacts; apply contact enhancer
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| Distorted or crackling audio || Failed capacitor near audio circuit || Recap logic board; check audio DAC
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| No sound at all (speaker or headphones) || Audio chip failure, capacitor damage || Check for capacitor leakage; may require logic board repair
|}