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[MOVED] Changhong factory mode

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I has do this way :-changhong service menu Hi
For service mode
set volume to
minimum .Then
press " MUTE " key
( on remote ) and holding it press "
MENU " key ( on tv
set ) . Red " S "
must appear on the
screen....But it doesn't work on my Changhong Lcd tv,there is other way?

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