It seems like its a cable issue indeed. Today the memory wire of the left part suddenly fall off from the stock cable lol. Guess its broken internally. Thanks guys

Hi guys, I have been using the IM70 since 2014.   Since yesterday the left side has totally no sound, i have tried connecting to different device and clean the connector but no luck.   Is this more like a cable problem or body/driver problem ? Could changing a new cable revive my IM70? Thanks