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The lack of sound after the Bluetooth nightlight connection may be caused by the following reasons
1, the motherboard connected to the speaker of the transmission line welding, resulting in the speaker can not play sound.
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2, the Bluetooth module of the Bluetooth speaker is damaged, resulting in the received audio signal can not be played.
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3, the horn is broken, although the chance of damage to the horn is relatively low, but not excluded.
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4, may be the problem of mobile phone software, it is recommended to change a mobile phone to try.
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5, power failure, there may be transformer short circuit, fuse break, rectifier tube penetration, etc., the fault performance is no sound or there is a big hum.