Hi,
I'm assuming that there is no audio coming from either the left or the right speaker, is this correct and which speaker is it?
Have you tried a different 3.5mm stereo audio cable, optical cable or RCA audio cable between the source of the audio and the speakers?
Did you try connecting the speakers to another audio source e.g. headphone jack of a mobile phone and play audio to listen if the audio is coming from both speakers, to prove whether the problem is with the speakers or the source of the audio.
What have you tried to do to fix the problem?