LG No Picture, Screen Flash 47LN5200 47LN5400 47LA6200 47LN5700 47LN5750 47LN5790 

1st time I had my TV repaired it cost $250. I was determined to never go through it again. And this video made it happen. Thank you!

Great work! I actually saw three lights out but amazingly enough, no visible difference in picture quality. I'm looking forward to your next fix. I always learn alot from what you do in your shop. Thanks for taking the time to share your knowledge with us.

Thanks so much for the posting. Even though I found many other, I found your video first and because it looked complicated at first, I almost didn't do it. The TV was free, so I figured "why not?". I'm glade I did. Even if my repair doesn't end up lasting that long, I now know that it's not that hard for me to do. I'm better at this stuff than I give myself credit. It only took me 20 minutes to disassemble enough to get to the LED strips. I wanted to add a few comments that will hopefully be useful to someone else. First, in every video I've watched, the screen is taken out from the top. It's much easier to first remove the plastic face frame while the screen is vertical and the stand removed, lifting and rotating the entire TV as needed for access all the way around the frame. Then with the screen flat down on a surface big enough to, at least almost entirely support the LCD panel, remove the the top and bottom metal retainers, then the sides. That way, as long as you have the ribbon cables from the timing controller board disconnected at the LCD panel, you can carefully maneuver the thin board permanently attached to the LCD panel out of the backlight frame and prevent damage to those ribbon cables, their connection points or the thin board they're attached to. Then just lift the backlight panel up and the LCD panel stays flat on the table. For me, this was important because I don't have that much space. It then allowed me to handle removing the diffusion layer retainer frame while the back light was vertical, again carefully working my way around it, rotating it as needed. I could then simply remove the diffusion layers and put them in the same orientation on the LCD panel to prevent dust and damage. Then I removed the stand-offs, a few cables from the main board and all but one screw from the main board, just enough to rotate it to remove the final stand-off and then I reattached the main board back in place and reattach the cables to it. Then I just turned the backlight around and removed the reflector and put it face down on the diffusion layers, again in same orientation as when assembled. Watching another video of someone using an LED rework station from Shop Jimmy, I was inspired to clamp the handle of an old iron I normally use for applying melamine edging to melt the solder. I removed the adhesive just where I was changing a LED so it would not melt to the iron. Like most irons, this one has an automatic shut-off that does kick in, but if a plugged it in and set on high, I found it would get just hot enough to melt the solder for removal and re-solder before the automatic shut-off would kick in. If I needed longer, I just reached over and unplugged/replugged it to reset the safety cut-off and give me more time. I replaced three LEDs this way and it worked perfect every time. Where I removed the short sections of adhesive tape, I just used the thin 3M double-sided office tape they sell in small rolls already in a dispenser as a replacement.

Thank you for making this video. Ive manage to fix a 50" lg led tv which suffered 2 led failures. tested the strips using a 30v bench power supply, brought 2 6v led's and fitted them using a rework station. Made the job easy having the right tools but this video was my guide!

You are a life saver! after checking many many forums and calls to lg, which do nothing btw, i finally found this video. After pulling the tv apart and testing the leds i had the same exact repsonse. i ordered 2 strips of L2 which hopefully has enough spare leds to last me for a while. You saved me from LG and their $299 repair for only $30

I know this video is dated, but I found one of these sets thrown away so I snagged it just for curiosities sake. I found it to have the same issue as in your video. I bought a full set of LEDs and a power board since it blew while testing, installed and now I have a perfectly good working 47" LG TV thanks to your vid. I appreciate your time spent to teach us how to T/S and repair - Thanks from Houston Texas and keep up the good work!

Thank you so much for this video. I have an LG 50LN5100 that had the exact same symptom. Replaced the LED strips and all is well now. Your video was invaluable to me.

Great video, great information, great presentation! The LED issue is real! Being a tech myself, most of the sets in my home are landfill saves that I picked up on CL for cheap. The most daunting was a 70" Sharp AQUOS LED replacement. Next, up is one of these 47" LG's...it should be fun!

This was very informative. Thank you so much. I feel pretty confident I can fix my tv now. I'm guilty of running it at 100 on the backlight. I will change that as soon as I get it fixed.

Thank you very much sir! This video was very helpful and allowed me to fix one of these TV's that a friend was getting rid of. I now have a "new" tv in my house.

I fixed a friend of mine his LG 47LA6200 with the instructions of this video. Bought the LED backlights on the web and followed the video to replace all the led strips. Worked on it for a good day and it's fixed! Exactly the same problem btw Big thanks to the publisher of this video !!! :D

Great video, explained very clearly about the back light led fault symptoms and how to disassemble the TV in stages in order to replace them. Having just watched this video I'm now sorry that I've ordered the av board earlier on today as this has convinced me that the fault is indeed with the back light led's which I knew I should have checked first but didn't. I'm just about to completely strip the TV and check them. Thanks for the great video that has probably saved a lot of extra work.

Great video. I am in the middle of this process with a VIZIO 470i-AO. Waiting on a set of LED strips now. I too habitually set my screen to the brightest setting but not anymore. Between the costs for the LED strips($85.00 with shipping) and two sided tape, add in labor cost of $30.00/hour, it would have cost me $275.00 to have this professionally repaired. So, aside from saving $190.00, i also learned a very valuable lesson on preserving the lifetime of my televisions.

Just wanted to say thank you very much. I had the same issue 2 days ago, bought the LED strips for £25, took me an hour to replace every strip in the tv and it's now back up and like new again😁 great video and very helpful and informative😎

Awesome video, thank you. Watching this Im fairly sure this is what I just had done to my TV (thankfully under warranty) FYI it failed in the same way 2 months later so they are taking it back tomorrow. Great stuff, thanks for the information.

I was very impressed with your video - informative, clear and very well presented. I have no doubt that the problem you have shown in this video is the same that affects my own LG 50AL6230. Hopefully I'll be able to use the techniques that you have described to fix my own TV. Thank you.

Terrific video! You are a very skilled but humble technician. One of the first videos I did not fast forward through at any point in time. You don't need me to tell you to keep up the good work but I'll say it anyways; "keep up the good work!"

I fixed my TV with your tutorial. I am very grateful to you. Model LG47LA6208. Thanks again!

Just finished, friend did all the work. Thanks! It worked! Heat gun helps A LOT

Great tutorial thank you! I have repaired my mothers tv with your help :)

GREAT advice...the first thing I did when my parents bought a CHEAP ( $400 !!!) SEIKI 4K TV 6 years ago was tell them to keep the backlight at no more than 75-80%. They haven't had problem one with it, while so many on Amazon were complaining of this CHEAP BRAND of 4K TV burning out so fast ! Turn down your backlighting off of 100% !!!

Okay, I'm not going to lie. I hummed your background music the whole time I was putting my TV back together. Thank you for the great step by step instructions. It was really pretty simple once I got over worrying about taking it apart. It was already not working. Why worry.

Dude is an OG...once I saw that 7v 1980s Makita! You rock!

Nicely explained. I would definitely follow keeping the backlight low recommendation.

Great Vid, your commentry was just right, concise, yet detailed, also love the way you edited your clip. Loved it, thank you for making it, and allowing us to benefit by it. Ray H. from the UK.

Great vid, showed the exact symptoms my tv is having. I tweeted LG asking for advice when the problem first developed but as the TV was 2 years old and out of warranty they weren't interested. Needless to say my next TV purchase won't be an LG.

Thank you for this! Worked perfectly!

Fortunately, now new strips are not only available but very cheap, too. So, no need to work these individual LEDs unless you have to. But, very useful instructional video, thanks, I came into one of these for free and am determined to make it work again.

Thanks for the tip, brought mine down from 20 to 10, a Samsung 32" LED TV

Thanks for posting this very informative video. I didn't know what was wrong with my TV until I watched this video and saw that it was the same problem I was having. Thanks to you I was able to repair my TV !

I would tell people to max the backlight at no more than 50 %....but, everyone always bumps them to 100 % because it's so vivid.....and as you said, it destroys them in short order....stumbled across this video, brings back memories of the old days. Hope all is well Steve. Best wishes. Frank. P.S....I sometimes look at your DLP and CC backlight videos....seems like it was ancient history...😄... I miss those repairs, they seemed so tenuous when we did them, I'd love to go back to those days..!

Because of this video, I fixed a free TV I found thrown out in a back alleyway. I found the correct LED strips on Aliexpress. It was a $20 repair and took a couple evenings of work, but now I have a $20 TV :)

Awesome Video. Helped me tremendously. Thank you for taking the time to video this!

excellent video. thanks for making it and the the thorough explanations. now with the current pandemic situation then now is the perfect time to obtain free or near free TVs with non-function backlights for repairs.

Thank you so much for this video! I was trying to find the solution to this exact problem, and now I can repair my tv! ^_^

The best video on RU-vid. I'm now a subscriber. Very good.

Thank you very much for all yours videos that you poted on RU-vid it's really very helpful. Boualem Algeria

Thank You for the Excellent instruction.

excellent presentation, thank you. now i'll go buy a new tv...and set the backlight low.

wow. awesome. thank you for sharing. I couldn't figure out voltage for led's.

Great job, Man! Thanks for the lessons and sharing the knowledge.

Great video ! My LG 47LN5400 powers up, quick flash, then shuts down.

norcal715 - Thanks so much for the video and sharing your expertise. My 47LN5700 is back up & running good as new. Shop Jimmy is still out of LED kits, so I found new ones on eBay. LG has printed the part description on each strip, so it easy to search for replacement parts. THANKS AGAIN!!!

Thanks for the video - fixed our TV using this :)

Panasonic 50" LED-backlit set here with brightness set to 80, have reduced to 65 (the lowest I can stand) on your suggestion, hopefully this will extend its life as the newer sets just don't seem to have the quality any more. Thanks :-) This fix looks almost manageable for a hobbyist like myself as well, although actually diagnosing the problem in the first place would be less than straightforward!

Thanks! Bought a complete set of LEDs on ebay. Watched this great video. Knocked it out in about half an hour.

Excellent Video series, Thank You!

outstanding troubleshoot. .. good job sir norcal715 as always...

Excellent video Thank You

Very good, I am here in Brazil, but the video is very good, it took me doubt that I found here. Thank you very much.

Completed last night. Haha I just paid $30 for a $700 tv. Thank you for posting video

You are brilliant. Thanks for the video!!

Thank you for the tutorial. Very clear. The only question I have is the part number of the LED to use to repair my LG 47LB5830-UV. Thanks

Its very informative and educational video for me , thanks. And i think that we can change the whole Led Strip too, if we get it from the Market.

Thank you for sharing, great vid! What model are the LEDs?

You saved me alot of money! Thank you!

Such a great video thank you for sharing!!!!!!

well done, thank you.

I have a Samsung 21" CRT tv. It`s going about 16 year. Still works. Only 1 driver capaciitor 47 microforad and a main resistor change. The sycret? Contrast, always on 50 %. LCD com screen 30 % contrast, more than 12 year, still no problems.

Awesome video and answers my questions. I am a computer tech of over 20 years and frankly for my 5 year old 47LN5750 this much work is not worth my time. It just died last night but unless I can find a repair place in Ottawa going to fix this for less then $200 I think investing $200 in a new one makes more sense. Thank you and I subscribed because of your great work and video.

Awesome video! Thanks for sharing!

I had the same problem and I replaced the led strips from ShopJimmy and the tv worked again , however now the picture has a faint issue of like looking through a window screen with small squares showing in the background. I can send you pictures of my problem if it would help. Your video was a great help replacing my leds.

superb..so how does contrast control differ from backlight? some sets doesnt come with backlight control.

Nice video. Thanks for sharing your ideas!

Great video, fantastic job.

Great video..awesome dude..professional work

Holy Shite! Looks like these things were made to be disposable. Repair is way too laborious for the layman. One huge takeaway though. Turning down the backlight is a great piece of advice. Also, sounds like a good reason to NOT buy a display model from a store as their TVs are on all day and at the brightest settings. I'm sure that would burn those LEDs out a lot quicker. A couple of humorous notes: Gilligan's Island can be seen playing on a different TV through the reflection on the screen while laying flat. Brings back memories. And, when the repaired TV is on for demenstration, it looks like the weatherman is doing the talking (obviously not, however) as his gestures appear to match up. Thanks for the video!

Your the best! Great work..

thanks for the info. great vídeo.

Really Really Really informative video👍👍 Thank you

Great video, good work. Very helpful

thank you so much. this helps me to fix my hitachi that has been in the closet for a year.

thanks... this helps my work

great work very informative 👍👍

Awesome video ! thank you

Thanks for the video, very helpful. I was working specifically on a LG 47LN575V-ZE from the UK. I ended up with a cracked panel by taking out the plastic frame and not taking each layer out like you did. I also highly suggest everyone copies your cradling method by putting their arm under the panel before lifting out. The frame on mine went flexible and allowed the panel to sag in the middle allowing enough pressure from gravity to make the dreaded noise :(

Great work Norcal :D

Great video! learning how to do electrical repair with the help you tube. This is my last tv I need to fix for my multiple computer monitor setup. Still don't under stand the meter thing at the beginning, tried it couldn't get same readings. I have harbor freight 95683 digital clamp meter cen-tech tried all volt settings got 1 on 200m the rest nothing. So my question is can I get your readings on cent-tech multi meter. Tv has same flash and has pic with flashlight. Last tv fix had no flash and found bad transmitter thanks again for video

This was helpful, just curious , is it normal for a T-Con board to read positive voltages on the left and negative on the right?

I've repaired two LG Tv's now with this same problem. an LG 47LN5700 and LG 47LN5750. In both cases a few LEDs were out. I replaced them and the TVs Functioned again. Couple of tips 1) I just taped the speakers down to the Back panel rather than remove them. Less loose stuff laying around 2) No point in testing the LEDs like he does here BUT you should replace all 12 LEDs otherwise you could repair it and then another LED that you didn't replace would go out and you'd be back to tearing the TV down again. 3) Keep note of the labeling of the LEDS Strips R1,L1 so you know where to put the replacement LED strips. To get the LED Strips off, I used a heat gun to soften/loosen the adhesive and then used a metal spudger to lift the LED strips off the panel. If no heat gun, you might be able to use a hair dryer.

you are great thank you for this formation

thank you, thank you, thank you !!

That was excellent. Thank you.Great tutorial as always.Never miss an episode.

Helped me fix mine. Thanks

Thanks for the video, I have bought replacement LED strips and I will replace them all!

Great Video!!! Thank you.

Thank you, you are awesome

Hi norcal715, How the heck did you get the tv to stay on if there are a few led`s still out? The set should detect this and shut down.

Hello Steve,I just found your video and must say its the best Ive ever seen.I do beleive that a novice could do this by following your instructions.Do you teach TV repair by chance?

Thanks for the great video. We can get rid of the TV now.

You are the best my brother......

Great video. I had done the flashlight test and had image that I could see with full sound. I have the LG 47LN5750 and have replaced the T-Con Board, Power Board and all 12 LED strips. Did each one before ordering the next in that order. I don't think there is anything left to replace other than the main board but I can still see an image with the flashlight test. I show maybe 1 volt on one side and 1/2 volt on the other side going to the strips. Any other ideas?

I'm wondering, where do you get these specific LED's?

Great work done well

thank you very much.

Dude, taking that screen out without using suction cups really had me on edge. Not only could it easily break, but you've just smudged all your fingerprints on the back of the screen!

Great video and explanation of how to repair an LED screen. I have an LG 50LN5100-UB that does not have any voltage at the LED connectors. I have removed the LED connector and still have no power at the connector. The power light turns on and at some point the screen does flash for about a 1/2 second. Would you think that the power board is bad in my case?

Great video, I have the same problem. Did the voltage checks exactly as you showed but I have no return voltage on either side. Would it still be the led strips?

I've got a 2013 one on my bench with the same issue. It appears that the LED's already mounted on the strips are for sale at not too much $$... so for those who don't want the soldering adventure, you can snag those.

Done well , we'll I have have learned! !! Regards with thanks! !!! wow.