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42LF652V - how to change dual audio digital TV on remote?


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I couldn't find anywhere on how to change dual audio with single or button combination on digital tv.

Tried with arrow up and yellow button, nothing happens.

AD button is for audio description on/off.

On some channels someone puts dolby digital as primary (second audio) and instead of hearing stereo it pushes, as it seems, RR/RL channels - no voice.

I can change in menu - programmes - audio language to first. But as soon as I change channel and revert back it reverts to secondary. This happens rarely (depending on what kind of broadcast puts by default), but is there an easier way to change it by remote?

I could do it on my previous LG 32LD750, but this one???

Thanks in advance.

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