Polk Hampden suddenly not producing sound

Hi, i just bought the polk hampden from amazon in June and when it finally arrived at my house, i immediately try out the speakers and it sounds great and everything works but suddenly today when i tried to play music from iTunes or foobar, there is no sound coming out of it, i even tried bluetooth using my iPhone 6 and there is no sound coming out of it either. I live in Indonesia and the standard voltage is 230 V and the frequency is 50 Hz and it should be no problem, is it the speakers or something else?

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