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is it safe to use a 42lg70-ua LCD tv main board on a 47lg70-ua lcd tv
Brent Lavallee, connectors and layout are different, so I would not even try. Hope this helps, good luck.
May be it will some help you. Unplug power cable and all AV cables from rear of TV and carefully lay TV face down on a clean flat working surface ensuring that you don’t damage the LCD screen