LG 4kuhd webos tv strange remote issue

Feb 14, 2020 8:34AM PST

Hi can anyone help me I have a strange problem with my tv when the tv is off the standard/sky remote will turn tv on and control tv for about 5 seconds then the tv stops responding to the remotes it still responds to the mobile app and a mini usb wireless mouse and keyboard I have I don't want to keep having to get my phone out to control my tv and the keyboard has limited functions for example I can't select input. Iv tried unplugging everything some time iv reset to factory settings nothing work.
Has anyone heard of this before any info would be appreciated
Thanks in advance

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That sounds like a warranty issue.
Feb 14, 2020 9:39AM PST

The usual is to factory reset the TV and test which has been done. if it still fails then it's back to the seller or maker depending on who the warranty is with.

I'd not tell them about the keyboard or other things. Stick to things the maker supplies. For the LG, only use the LG remote as the test device as that must work or they have a defect to correct.

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One Weird Possibility
Feb 14, 2020 7:54PM PST

Several years ago I encountered a similar problem on a friend's TV. In that case it was a button on the remote that was stuck. It kept sending a signal or command to the TV even though the button didn't appear to be pressed down. When he used a different remote the problem went away. His choice was to get one of those Harmony remotes that can handle about 5 different components. He set it up at the Logitech Harmony website to control his TV, A/V receiver, and a Blu-ray player. Problem solved. Not sayin' that will work for you, but it's one possibility.

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Another weird possibility
Feb 14, 2020 9:02PM PST

Let me call it "infrared pollution."

It can take a number of forms. In one case it was a matter of the evening sun shining in and "flooding" the infrared sensor, so that the remote doesn't get through. Other remotes in the same area or - one of my favourites - a "remote blaster" (those gadgets that allow you to control, say, the satellite receiver in the lounge from the kitchen or the bedroom) could also flood the sensor.

Something that can be eminently useful for spotting a runaway infrared source is a digital camera (the one in your phone should be perfect for this.) Just point it at a remote so that you can see the LED sending the signal. When you push a button on the remote you will see the LED light up on the camera's screen. The camera's sensor can see infrared light that we can't see. Any infrared source that is on without a button being pushed is your clue.

Counter-experiment: When your room is fairly dark in the evening, shield your TV's IR receiver and the remote from any possibly interfering IR light and see if you can get a reaction under these more "controlled" circumstances. If not it appears that the TV's firmware is running into a strange loop, which would then constitute a warranty case. (If you take the TV back to the shop, expect them to perform a test like that before they accept the case. In shops, by the way, you sometimes find the strangest interference between remotes - changing the volume on the TV simultaneously switches channels on the receiver and stuff like that. Or - as I had at home: Switching on the TV in the kitchen also switches off the running TV in the bedroom - through a blaster that transports the signal - different brand TV, but apparently the same innards.)

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