Question about LG 32LC7D Television

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TV Changing Channels on It's Own

I have a 32" LCD TV from LG (Model # 32LC7D) It just started to change channels continueousley whenever you try to change the channel. Normally you would think that this would be control module problem but there are other wierd things going on. If I stand next to the TV with my hand gently resting on the back, it will correct the problem. But only as long as my hand is there. For some reason I think it has something to do with static electricity or a ground loop problem created by the new air purifier I bought 2 days ago. It is a Honeywell (Model # HFD-120-Q) that cleans the air by charging the filters with static electricity. Both items were connected to the same outlet. I have disconnected them but the problem persists. Any help would be much appreciated. Thank you.

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  • Treis May 08, 2008

    Right, that is actually the first thing I did. Since I posted the above problem, I have moved the TV to a different location outside of my entertainment center onto a shelf and the problem is gone. It is still plugged into the same outlet and is connected in exactley the same way to all devices. (I did check all connections before it was moved, so that was not the problem.) I have been doing alot of research on this model and it appears that alot of these all have the same sort of problems with the tuning module in the TV.

  • tjd1000 Oct 04, 2008

    I have the exact same problem. the tv keeps changing channels. I actually threw out the remote after changing batteries. I bought a universal remote and cant get that to work at all.

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All helpful, but not a solution. Have the same, or similar problem - when the tv (32LC7D LG) is turned on, after about a minute and a half it starts changing channels like the channel down key is depressed. During this time, It will not take commands for the remote nor the side control. Every time I unplug the tv, it does this at irregular intervals and also stops abruptly after a long period of time, making it hard to tell what really is the problem.

I removed the side, key tact switch - a solution saw for a Samsung for what seems to be now a stuck key - that wasn't the problem. It then wires to the I/r, like your situation holding the channel up button will a lot me to turn the set off and take remote assume some control like power off yet the changing is so irregular and inconstant that 'fixing' the opposing key is not an option. It then plugs into the bottom of the mainboard, I took the mb casing off, everything "looks" fine but I'm not sure what to test and what to look for. There's so little in the way of literature and tech manuals, tutorials, diy videos to follow.

The channel down button just became volume down and the tv turns on by itself. Right now I am leaning toward whether it would be worth it to replace the main board or if there might be other problems (tech manuals would be nice for starters).

Posted on Nov 14, 2015

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Are you changing channels with the remote? Try taking the battery out of the remote, its buttons might just be getting stuck? If, when changing the channel by hand, it persists, then it is an electrical problem, and you should contact LG to see about getting your unit replaced.

Posted on May 08, 2008

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My LG 32LC7D was also changing channels on its own. I took the batteries out of all of my remotes (not a solution).

Then I tried wiggling the side buttons to see if they were stuck (not a solution).

Then I opened up my TV and disconnected the side button wiring from the main part of the circuitry (not a solution).

Then I disconnected the small circuit board connected to the side buttons to see if that part was the culprit (not a solution).

That leaves the problem in the main circuit boards, which I had no tools to test/check. I put my TV back together and came up with the following solution.

Take a piece of duct tape and a common scrabble piece "E". Use those two items to keep the channel button pressed in to counter the channel changing.

So with a piece of duct tape and a scrabble piece my TV now works like new.

Posted on Aug 27, 2008

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