Samsung Galaxy S8 no speaker sound? Usually, Damage of the speaker or malfunction of the speaker circuit can result in this issue. We need to confirm whether the speaker is in a normal status or not first. If yes, then continue to run diode mode measurement of the speaker contacts. And we can relate the fault to audio amplifier IC with the measured value of one contact being abnormal, At last, we complete the repairing work by replacing a new audio amplifier IC.