Question about LG 47LG70 42 in. LCD TV
You will need to replace the Sub PCB. Its about a $50 fix if you do it yourself.
You can find the part here.
Its part 510.
This circuit board controls the volume, channel, menu buttons, ect.
Posted on Dec 21, 2010
I have been recently having a very similar problem, and was wondering if when this happened to you did the tv also flip back and forth between the menu and the truemotion demo??
Mine will pop up and show a screen that shows no program info available (similar to if you are changing channel but it is running through hdmi) then it will change to trumotion demo for a few moments before randomly navigating the menu by itself and same as yours, no changes ever occur.
I have found that by continuously pressing the menu button on the side of the tv, it will prevent this until you let go........
I checked with LG, but unfortunately no recall :-(
Posted on May 18, 2011
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Posted on Jan 02, 2017
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