Question about LG 37LC7D 37 in. LCD HDTV
The TV sensors doesn't work and I need to know how to fix the problem. I know that it's not the remote control that is broken but it's the sensor light. I don't see the sensor light on the TV flashing whenever I use the remote. So my remote is useless.
Check the remote control for its infrared emission. Check it with fresh batteries. Check it by pressing all the keys. You can detect the presence of infra-red emission from the remote control, using a cell-phone camera. If you wish to get more details about how to check a remote control, please visit this site. One among the posts has details about it. In some cases, the remote control might need to clean.
Search the site by type in this key phrase "how to test a remote control "in the "search box at the top right of the display window of the Homepage" to get the related post quickly.
https://www.youtube.com/watch?v=jsSCNCW3IbQ [open and clean]
https://www.youtube.com/watch?v=Qp-l1uh-5gE [open and clean]
Posted on Mar 03, 2018
Believe it or not...THIS WORKS!!!!
Look on the back of your set for an external remote jack. It should be the same size as a small headphone jack. If it has one, use a spare headphone plug or your headphones, and plug them in and out about 50 times. This will clean the tarnished contacts and make your remote sensor start working. Your remote sensor goes through a switch on this jack.
Posted on May 04, 2010
sparrow00, your fix worked for me, and I think I know why. The 1/8" remote input jack on the back of the TV has electrical contacts inside that are probably there to sense the presence of a plug-in remote. When they detect the insertion of this plug they disable the front panel IR (infrared) receiver and the TV only responds to this plugged-in remote and the buttons on the TV itself. After some period of time these contacts get corroded and the circuit is no longer completed between them. The TV now thinks an external remote is plugged in, and it ignores its own front panel IR receiver.
When you plug a 1/8" plug into this remote socket on the back of the TV it wipes away the corrosion. When you remove the plug the internal contacts conduct properly again and the TV responds to its front panel IR receiver. For best results you should plug a 1/8" headphone plug into this remote jack and twist it a few times, then pull it out and repeat several times. Repeat every frew months or whenever the TV acts up.
Thanks for your solution!
Posted on Sep 01, 2010
First, check your batteries. Next, try using a small miniphone plug such as headphone and plug it into the remote sensor jack on the back, do that a couple of times to clean the contact switch inside, see if that will work first, if not, then you may have IR receiver board problem.
Posted on Nov 04, 2010
SOURCE: LG 37LC7D remote doesn't work
I heard that Best Buy is still selling these models despite this known problem- I am trying to have mione fixed but was told the replacement part is on back order until DECEMBER!
Posted on Oct 31, 2007
Have the technician check for 5 volts on the remote IR Sensor if present the the Remote sensor has failed. Have him replace it to factory Spec's. No need to replace entire main board when the sensor is no more 5 dollars....
Posted on Sep 29, 2009
Testimonial: "Thanks a lot. Seems you've done this yourself :)"
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