Two, make sure that the square dance speakers can play sound, there is an audio input jack, and the power is on, the volume in the middle position,
Three to confirm that the connecting line is normal, the plug and wire is not disconnected from the line is not in poor contact,
Three to confirm that the connecting line is from the laptop's audio output to the speaker's audio
Please check the above items, if they are all OK, usually not no sound,
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