How to export audio from LG43LF5400 TV to 2.1 speakers while playing video from usb port?

rgxania

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Oct 27, 2015
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How to export audio from LG43LF5400 TV to 2.1 speakers while playing video from usb port? The 2.1 speaker has stereo female for audio in and TV does not have earphone socket or optical socket or RCA. I have tried scart to RCA but the sound comes out from 2.1 speakers only when channels are playing. When video from usb is playing the sound come out only from tv speakers.