Question about LG 42LC2D 42 in. LCD HDTV

28 Answers

How do I replace the IR remote sensor on my LG TV?

My TV doesn't respond to any remotes, I've tried all of the other solutions involving remotes and I know that it needs a new IR remote sensor. I have already ordered a new IR remote sensor, all I want to know is if it is easy enough to replace the sensor for someone who doesn't have a lot of experience with this kind of stuff to do; and/or preferably how to do it.

Thank you!

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  • chrisnelena
    chrisnelena Aug 04, 2012

    Worked for me too! Thanks for the info!

  • Dal Carioni Aug 28, 2012

    Fantastic...worked for me after 3 times into the repair shop

  • dianelav01
    dianelav01 Feb 03, 2013

    Wow - this simple solution worked! We were just about to either take it to a technician or just buy a new TV. Thanks!

  • paul y
    paul y Dec 07, 2013

    I had tried for 2 days to program remote,i did the remote in with a audio jack shazaam it worked

  • jon macht
    jon macht Mar 31, 2017

    This simple answer, cleaning out dust in the remote control jack on the back of the tv set by taking a mini plug and pushing it in and out a couple of times, WORKED!!!! Thank you for the advice of this brilliant tv technician! That's all it was -- dust inside that cleaning the contacts out in this simple way, saved me having to buy an entirely new tv set!!! YAY!!!

  • Terri Z
    Terri Z Nov 17, 2018

    You rock! Totally worked!

  • Diane Cloutier
    Diane Cloutier Nov 18, 2018

    i looked for a remote control jack on the back of the set, but don''t see anything that is labelled "remote". There are a couple of empty audio jacks. Any ideas?

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28 Answers

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My LG TV stopped responding to the remote. A very helpful repair technician told me to stick a head phone jack in the sensor jack on the back of the TV a few times to clean out the contacts. Now the remote control works fine.

Posted on Nov 11, 2009

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  • Cathy Needs to Fix Jul 16, 2012

    Perfect solution. Can't believe it was so simple. Saved me repairs, how to get TV to shop or in-home visit. MANY THANKS. Cathy B

  • Bill L Jan 29, 2013

    I used the compressed air and headphone jack to fix the problem. it does work. apparently dirt fools the TV into thinking a wired remote is plugged in. Consider covering the wired remote socket to prevent it from happening again.

  • Terri P Mar 17, 2013

    My TV remotes died suddenly and I did what he suggested with the headphone jack. Unbelievable but it came right on. Whoever came up with this solution is a genius!

  • Allan Schwarz Jun 20, 2013

    Wow!!! After buying a new remote and it not working. I was about to order a new IR sensor. Thank god I didn't waste my time and money. The person that thought of this ROCKS.

  • Willis Chen
    Willis Chen Jan 28, 2015

    Oh my gosh! Thank you this worked!

  • jon macht
    jon macht Mar 31, 2017

    This simple answer, cleaning out dust in the remote control jack on the back of the tv set by taking a mini plug and pushing it in and out a couple of times, WORKED!!!! Thank you for the advice of this brilliant tv technician! That's all it was -- dust inside that cleaning the contacts out in this simple way, saved me having to buy an entirely new tv set!!! YAY!!!

  • Tricia Duggin
    Tricia Duggin Jun 04, 2017

    YEHHHAAAAHHHH!!! THIS WORKS!!!! Thank you so much!!! We used a vacuum cleaner with a very small nozzle (used for car cleaning) and then wiggled the headphone jack. Cannot thank enough the person who came up with this :)

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My LG 42LC2D remote sensor stopped working too. Seems common. I unplugged the TV and took batteries out of the remote. Also plugged in a headphone jack into remote control jack on the rear of the TV, as one person suggested. Voila, that's all it took. Saved me hundreds of dollars and a big headache.

Posted on Nov 18, 2009

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  • Golfer Doc Aug 29, 2011

    Incredible. This tech challenged old doc thought I would be in for another soaking. It worked perfectly. Thanks

  • capp171351
    capp171351 Dec 05, 2012

    tried and it worked on ours as well ...thank u thank u thank u !!!!

  • jon macht
    jon macht Mar 31, 2017

    This simple answer, cleaning out dust in the remote control jack on the back of the tv set by taking a mini plug and pushing it in and out a couple of times, WORKED!!!! Thank you for the advice of this brilliant tv technician! That's all it was -- dust inside that cleaning the contacts out in this simple way, saved me having to buy an entirely new tv set!!! YAY!!!

  • M Mirza
    M Mirza Jun 16, 2017

    Jon, I just got the same issue with my LG TV (42LC7D). Can you please explain a bit more.

  • Terri Z
    Terri Z Nov 17, 2018

    Thanks a million...worked on my LG too.

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As unlikely as it seems it ACTUALLY works. Plug in ANY 1/8" headphones to the "REMOTE IN" jack and then unplug the unit for 30 seconds, then replug and the remote worked. Not sure why but it works.

Posted on Dec 20, 2009

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  • Brandon Stone
    Brandon Stone Apr 14, 2014

    That's awesome.. Worked for me.. I wonder why this works? Does it reset the remote system??

  • Geoff Walker
    Geoff Walker May 04, 2016

    When you plug a WIRED remote control into the TV's Remote Control jack, a pair of physical contacts in the jack disables the IR receiver. This is the same concept as a speaker being disabled when you plug a headphone into any audio device. Plugging ANY plug in and out of the jack several times "exercises" (cleans) the contacts in the jack, ensuring that the IR receiver remains enabled.

  • jon macht
    jon macht Mar 31, 2017

    This simple answer, cleaning out dust in the remote control jack on the back of the tv set by taking a mini plug and pushing it in and out a couple of times, WORKED!!!! Thank you for the advice of this brilliant tv technician! That's all it was -- dust inside that cleaning the contacts out in this simple way, saved me having to buy an entirely new tv set!!! YAY!!!

  • Nancy Little
    Nancy Little Jan 28, 2018

    Um. WOW!!!! I feel so competent. Thanks so much for this easy solution! Made my day.

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I would like to thank all of you for posting this solution as it certainly worked for me as well on my 47LG70 LCD TV. I proceeded to thoroughly dust all of the component input/outputs on the TV with an air-can. The remote works fine and I do not need to keep the headphones plugged in.

I'd been racking my brain trying to fix this problem; I even switched out remote control sensor board. I couldn't understand why the remote controls weren't working, but this solution, which seems completely irrelevant worked. Who would have guessed!!!

Posted on Jan 24, 2010

  • lcmartinez1 Aug 27, 2010

    you know guys it works!!!
    Spent $400 repairing my 42LC2D last year and thought I just about had enough
    Thanks to all

  • jon macht
    jon macht Mar 31, 2017

    This simple answer, cleaning out dust in the remote control jack on the back of the tv set by taking a mini plug and pushing it in and out a couple of times, WORKED!!!! Thank you for the advice of this brilliant tv technician! That's all it was -- dust inside that cleaning the contacts out in this simple way, saved me having to buy an entirely new tv set!!! YAY!!!

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I had the exact same problem. Came across this site and the solution and it worked!! I unplugged the tv, used compressed air to blow the remote in opening, then plugged my headphones in (this only being needed to clean it). Now works perfectly. Great tip, thanks to whoever came up with this.

Posted on Feb 09, 2010

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This is amazing. I have a two year old 32LC7D which is discontinued now. I have been having remote control issues not receiving the signal. I tried the head phone jack trick in REMOTE IN, and it totally worked. The LG phone support wanted me to call a technician and pay $$$$$$$ for a service call, or buy a new TV.

Posted on Dec 21, 2009

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Glad my wife found this post. I would not have thought of this, it is so stupid but explains some other issues. I can guess the cause being a former electronics designer.

When the extenal remote connection is active it liekly disconnects the IR sensor input. For some reason this model is prone to false detection of the jack plug. When you plug in the jack for real and remove it, it clears the false detection. This could be hardware issue but likely is some buggy logic in either the hardware or some chip software.

Posted on Feb 23, 2010

  • awarnold Feb 25, 2015

    To follow up, it appears to be dust collecting in the open port causing the false positive. Plugging a connector in and out clears the dust. I put a piece of electrical tape over the unused input and the problem ceased.

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Plugging my headphones into the remote control input on the back of my tv worked for me.

Posted on Jan 05, 2010

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Our LG 37" suddenly wouldn't turn on with any remote or let us adjust the volume. We read on here that spraying cleaning duster into the audio input jacks would solve the problem. We took the TV off the bracket and sprayed directly into all the jacks and the put it back on the wall. When we plugged it in, it worked!!! Wow!! Give it a try, it only took us 10 minutes!!!

Posted on Oct 04, 2010

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  • OleJD Jan 08, 2011

    My remote sensor stopped working yesterday. I changed batteries, used a different remote and nothing helped. I assumed I had lost my IR Sensor. It occurred to me that I might be able to fix this by plugging in an IR extender. After a quick GOOGLE search caused this threaded discussion to appear, I shot compressed air in the Remote Sensor jack in the back of my LG and immediately, the remotes started working again. Many thanks to those who have helped us save an expensive service call for a problem that is easy to fix.

  • Lee Johnson Jan 18, 2011

    Didn't believe this when I read it, but I'll be dam*ed, it worked!

  • Barry Bristow Nov 27, 2011

    It worked for me too. I guess there was enough dust in the romote in socket to fool the set into believing there was aplug in it. Cleaning it with a headphone jack worked immediately. Thanks all for the tip!

  • wine976
    wine976 Nov 11, 2012

    Worked for me too. Amazing.

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Yes ,you can do this your self . be careful of the back screws . they are different sizes

Posted on Jul 09, 2009

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My cable box remote wouldn\'t even work on this tv anymore. And guys I as skeptical as they come. But after reading what you guys suggested, I got my can of compressed air from my computer desk and sprayed it into the remote input jack as well as ones near it. And the gates opened up and the angels sang. THIS ACTUALLY WORKS!! Funny thing is, I stumbled on this website after I called the nearest LG repair center to tell them that I was bringing my TV in tomorrow. Whew, I just saved a 50 mile round trip and mega bucks. Thanks guys for all your help.

Posted on Jul 30, 2010

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  • bohdle Oct 23, 2010

    The canned air worked for us too! Thank you so much. When we called LG all they did was refer us to a repair center. Is this their best kept secret? It sure saved us a lot of money.

  • Onagain Oct 24, 2010

    Onagain here again. Since the initial compressed air trick. The remote sensor stopped working a couple of days later. I used a headphone jack and plugged it into the auto output as well as nearby surrounding jack ports. This along with respraying with compressed air did the trick again. It is now over 3 months later and I have had no problems with this since.

  • oops82 Nov 03, 2010

    Worked Great!!!! I have a 42LC2D and the remote stopped working. LG tech answers worked through a few things but nothing worked. Said I needed to get a tech out to look at it as it was the remote sensor. Found this website, vacuumed off the remote control port on the back of the TV and everything works fine. Thanks

  • Lee Johnson Jan 18, 2011

    Worked like a charm, whoever figured that out is awesome.

  • jesup Jun 09, 2011

    LG 42LC2D here - all remotes stopped controlling the TV. Pulled it off the wall (UGH), sprayed the remote-in jack, and poof - works perfectly.

    Undoubtedly the chip controlling the remote sensor sees enough conductance from the dust to decide something is plugged into the jack.

  • Onagain Jan 29, 2015

    5 year follow up to this cleanout option. To this day nothing has happened. All remotes still work with no issues. Seems it could have been more then just dust, or it could have been dust caused during manufactoring.

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My LG LCD TV quite responding to any remotes. I tried the compressed air trick by blowing the compressed air into the headphone jack and plugging headphones in and out a few times. This seemed to do the trick. Thanks everyone for posting this I would have never known!!

Posted on Aug 18, 2010

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  • janevandewil Aug 19, 2010

    We were also havng trouble with the remote control - the LG technicians "didn't have any idea" and referred us to a repair place. We were ready to do that, when we found these suggestions about using WD-40 on the remote input................voila it was instant success!!! thank you

  • k1211 Aug 25, 2010

    Yessssssssssss this works just plug into the sensor jack with head phones fixes the problem

  • FIXITWIFE201 Sep 01, 2010

    Thank you everyone. The compressed air worked. I am so happy.

  • jesup Jun 09, 2011

    The important jack for many LG's (and probably some other TVs too) is the "Remote-In" jack. Too much dust makes it think another remote sensor is plugged in there.

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Same thing - I tried the same old trick with a headphone jack and it worked. Cant believe my eyes

Posted on Aug 01, 2010

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This worked for me!!...as I mixed my audio out headphone type plug with the remote headphone type plug

Posted on Dec 28, 2009

  • Sam Bristol
    Sam Bristol Aug 01, 2015

    Where is the headphone jack please I'm having the same problem

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I think I like free. I have a LG 32 inch. There is no Headphone jack input in the back of the set but there is a remote input. I cleaned all inputs with air can: voila! My remotes now work! This Website saved me a few bucks. THANKS!

Posted on Apr 12, 2010

  • Linda Jan 28, 2013

    Where is the remote input on the back of the tv?

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Tried the jack trick and it appeared to work but next day back to normal. nothing.

Posted on Dec 26, 2009

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OMG, I can't believe the compressed air solution in the remote sensor jack really works!!! I actually need to thank the Best Buy sales person who found this web site and told me to give it a try. Just saved hundreds of dollars paying some tech. I don't care why but it is cool!!!
Thanks to whomever found it!

Posted on Jan 29, 2011

  • jackwcan Jun 12, 2011

    Yes, this works! I used an ear syringe -- two or three shots of air into the remote sensor jack removed the dust. TV works AOK now -- Thanks!

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I tried the compressed air trick. It worked! Just shoot some compressed air into the remote input and follow with inserting the headphone jack in the remote input several times. Plugged TV back in and voila!

Posted on Jul 25, 2010

  • rabbitsrun Sep 09, 2010

    I had DTV out

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My 5 yr old Philips 42 in Plasma has been one of the best I have ever owned.No complaints until recently when after a storm my remote would not operate the TV.I checked the TROUBLESHOOTING guide and tried everything it suggested but nothing worked.THEN,I read something that caught my eye:the TV is never truly powered down UNLESS it is unplugged.Today's TV's are just like computed.Sometimes,you just have to re-boot so that is what I did.I un-plugged the TV and left it off about a minute and plugged it back in.It came on automatically and when I tried the remote>VIOLA!!! Maybe this will help someone I hope!

Posted on Jun 16, 2010

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Wow, we were about to sell our 42" for $150 and just go buy a new one. Don't know how it works or what it did but don't really care. Thanx for the tip!

Posted on Aug 17, 2012

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I really didn't believe that a solution so simple could solve this problem..... I have bought multiple universal replacement remotes, and finally a manufacturers' remote.....none worked. I took a can of duster, sprayed out and inserted a headphone jack into the IR remote outlet in the back and amazingly, IT WORKED!!!! What a simple solution for a potentially expensive problem.

Thanks!!!!!

HAC, Louisville

Posted on Jul 02, 2014

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I was skeptical at first but I figured may as well don't cost nothing to try. Slipped in the head phone jack and it works. So to whom ever thought of that THANK YOU!

Posted on Oct 28, 2012

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My remote quite working on my LG 42LB5D set after the power outage of the June 28, 2012 derecho in Virginia. I just unplugged the set, put in the headphone plug in the remote jack, took it out, replugged the power and the remote started working again. Great solution. Thank you.

Posted on Jul 04, 2012

  • sidney812
    sidney812 Jul 04, 2012

    My remote quite working on my LG 42LB5D set after the power outage of the June 28, 2012 derecho in Virginia. I just unplugged the set, put in the headphone plug in the remote jack, took it out, replugged the power and the remote started working again. Great solution. Thank you.

  • Romy Fleming Feb 18, 2013

    I dont see a remote jack......my samsung remote and all others stopped working suddently, i tried putting headphone plug in but got nothing still...turned tv off unpluggged bla bla...nothing which input do i use?

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I have a 4 year old LG TV model # 42LC7D. Both the LG and DirecTV remotes quit working. I blew compressed air in to the remote sensor port and both remotes are working again. Thanks for the solution.
Tom

Posted on Aug 07, 2011

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Does that fix work if you do not have the manufacturer remote? I have an universal remote.¿

Posted on Feb 21, 2016

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I was panicked and desperate and shockingly enough this works!! Plug in your headphones into the back, power off any way you can and hold for a few seconds then turn back on and bam BAM BAM!

Posted on Sep 19, 2015

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Call a tv company

Posted on Sep 03, 2015

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It Worked!!! I used the headphones and the compressed air. Our electronics company told us there was no fix and we needed to buy a new TV. The a/v guys thought I was nuts when I had them dismount the tv so I could try it and it worked! They laughed about thinking how crazy I was, but now they have this knowledge.

Posted on Aug 30, 2015

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SOURCE: How do I fix the ir remote sensor on my lg 50PC3D plasma

RE-Program the rc to the TV

Posted on Nov 25, 2012

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SOURCE: LG 32LD320-ZA remote sensor

Replace the remote sensor. this component can be located just behind the infrared window at the front panel.

Posted on Jun 14, 2012

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LG LCD TV won't respond to remote controllers


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!

Jul 07, 2009 | LG 47LC7DF 47 in. LCD HDTV

1 Answer

LG 42LC2D not responded to remote


The IR sensor is in fact a "plug in device" .
The TV will have to be disassembled to replace the sensor.

You should make sure the remote is functioning before you do anything as drastic as taking your tv apart.

I am sure you have tried fresh batteries so the next step would be to hold down any button on the remote, the led light should have a faint pulse, it may be hard to see and you may have to go in a dark room but the led will pulse if the remote is good.

If you have a universal remote, program it for your tv and test functionality.

An RCA universal remote will work with your tv, if the codes don't work do a search with the remote.

If you decide to replace the sensor you should be able to find one at http://www.shopjimmy.com or http://partstore.com.

Let me know if I can be of further assistance.

Please rate this solution, the only compensation I receive is a good rating from you.

Lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

Apr 29, 2009 | LG 42LC2D 42 in. LCD HDTV

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