Samsung Led TV UN55NU7100FXZA half dark screen repair

This is a 55 inch Samsung UHD Led Smart TV that comes on but one side of the television screen is very dark or completely black. This is a full step by step repair on replacing the backlight strips, which is the cause of the half dark screen on 1 side of the Picture.
This Samsung model UN55NU7100FXZA uses 2 edge lit back light strips part number BN96-45913A. Even though only 1 backlight strip is bad causing the half dark screen, we will still install both led strips to ensure long life for the TV itself.
To support the Channel make a purchase from our online store:bigdogelectronics.us/
For Samsung un55nu7100f LED Strips:
www.shopjimmy.com/samsung-bn9...

[@geojohnson6093]

I really want to thank you for every video you have made,because I have started a small home base business rebuilding TVs from home, that I pickup from off the street,I am 65 years old ,recovering from Prostate cancer and living on SSI in New York City, Big dog keep on doing what you do ,because your videos and skills are needed by people like myself and others. Thank You

[@jradd67]

Dude thank you. Fixed my TV today with my wife. Not only did it save us hundreds/thousands of dollars but it was a fun project with my bride. Great channel keep it coming!

[@Goda00100]

Keep up the good work. A lot of unexperienced engineers and technicians will hate you. You make things look simple. This is advice from an Old-Dog.

[@jimargeny86]

I replaced my LED strips with a set I bought off of Amazon for $22. I want to give a shoutout to BigDog, I couldn’t have done it without your video! nothin but praise for your help, let the haters hate!!

[@s.wilson5199]

Thank you for sharing your expertise! This enabled me to do this exact repair (same model and version). I really appreciate that you are willing to teach those of us who are wanting to do our own repairs.👍

[@livelovelaughwithme4223]

⁰⁰

[@RonHelton]

You are a great teacher. I wish there were more like you when I was in electronics school. You are very thorough in explaining the processes and how to prevent damage to the equipment that you are working on. Thank you!

[@bigdog8882]

Appreciate U Bro. Thanks for watching.

[@SS-fz8ml]

@@bigdog8882 can my Westinghouse tv fix ? It just flicking .

[@SS-fz8ml]

@@bigdog8882 wish I could WhatsApp you my tv condition

[@matthewsinclair7820]

Watched your video today and it enabled me to fix my own TV. I'm pretty good with my hands but I'm a mechanic by trade and without your tips and step by step process of taking apart the TV I would of been fishing in the dark. Ignore the haters and keep doing you man. Good job.

[@andrewkerrison8363]

Thanks a lot. I am a photocopier tech so I am used to pulling apart all sorts of machines. But when I got the back cover off my TV I will admit I was stumped. Your instructions are very clear and well paced. I had your video going on my phone while I worked on my tv and I felt that I had someone in the room with me helping me out. I almost wish I had another tv break so I can do it again.

[@bigdog8882]

Don't worry you will soon. lol

[@StageMan57]

I have been on KZbin since it started. I have never seen an instructor as thorough as you, and your an excellent videographer to boot! That's why I Subscribed and Liked.

[@bigdog8882]

Welcome aboard!

[@MohammedAneek]

Thanks a lot for you and all the other youtubers. I managed to watch these videos and fix my TV for just 1/10th of the repair cost.

[@DanielTPeace]

Brother Man it is no joke to not only do this kind of work well, but film it and be instructive too is a mighty blessing. Thank you for sharing with folks. Your work is appreciated.

[@adonica1]

Thanks so much for your content. Someone just gave me a 55 inch Samsung , the same TV with the same problem. I'm so glad that I found you. I just have to order the tools and led lights and I will be back for the step by step repair. Don't stop. Ppl like me ( single female teacher, no money) need ppl like you. 🥰🥰🥰

[@Dyaxxis]

41:14 I agree. I'm a factory trained technician turned degreed engineer (almost complete with my PhD) yet I work with and continually learn from as well as help ALL types of technicians and engineers, regardless of experience and/or education. Those haters appear to be typing just to hear themselves talk. You're a good person. Keep up the good work.

[@bigdog8882]

Appreciate your E service! Thanks.

[@rogercharles2470]

Excellent work. I have over 20 years in TV repairs and still repairing TVs to date. I enjoy your videos while still learning new things. Thanks again brother.

[@bigdog8882]

Thanks Roger, make sure you check out the course, its excellent for experienced TV techs like yourself who still want to learn.

[@mikes.8301]

I absolutely enjoy your content, you've helped me fix many tv's for my friends and family...myself included. The way you explain things is easy to understand without all the technical lingo that would make people shy away from even trying. You've helped progress Into learning how to repair and I appreciate what you do, thank you!! Keep doin you BigDog!!

[@randymalak1730]

Thank you for the very informative video. Just finished my TV today.. The only think I think you and all the other electronics repair guys should mention is a warning about the capacitors.

[@bigdog8882]

Great to hear!

[@jeffsanchez4774]

Dude I learned allot from watching you, don’t get upset for what idiots say, there’s always someone who will come out with negative comments, I’m an Army combat Veteran in California and I stay away from negativity, because I too can loose my temper, you’re a blessed man

[@williamstaib4623]

As a NASA engineer, I very much appreciate your videos. All the TVs in my house I got for free and got working for $30 and your how tos. Ok, I don't work for NASA.. but the rest is true.

[@bigdog8882]

That is awesome!

[@bradfordroofing3963]

Great video!Not many people are as thorough and informative walking viewers through each step ....I actually enjoyed the education and knowledge shared is priceless....Thank you very much! You helped me repair a tv that my family will now enjoy but better yet I can now understand and possibly repair other TV in future instead of throwing the TV away. Thank you for your time and for helping us.

[@neonsynth]

Bruh, you are a straight OG at this. I've looked far and wide for anything similar before I found your channel, and hey, don't let any of those haters get you wound bro. You're awesome at what you do, I learned a ton by watching you work and loved the commentary. I repair and upcycle electronics just to save them from the landfill and to help people, and you wouldn't believe how many TVs I've had donated to me since the local news in SLC ran a story on me. I'll give you 3 guesses on what the most common brand donated is. 😂 Now that I've found your channel and I'm stoked to be able to repair a lot of them quickly and efficiently, sell or give them away, and save people a lot of headaches and money. Thanks a ton for your work, you're a humble man but you have bragging rights for days. I've been an electrical engineer for 2 decades, and you know there's an enormous gap between the guys at NASA and the like, and those who actually take the time to reverse engineer, dissect, repair, and service electronics. In my experience, they're lost as hell at this kinda thing, and pretty terrible at it. Quick question for you my dude, do you have a good resource for finding replacement parts and/or service manuals? If you don't mind sharing, I'd appreciate it greatly. I have a UN75JU6500 v.TD01 that was donated. I have the same problem with it as this one, and am having a hard time finding the LED strips. I'm giving it away to a family next door that's living on a disability income, as a surprise. Again, phenomenal video, great pointers, solid work and a big help to many of us. Thank you 👊

[@Channel405]

Thanks to your video and tips I've just successfully replaced both LED strips in a similar model. I watched quite few videos but I must say mate yours was the best. A really straight forward and informative video....right up to you started swearing! Sorry mate, but the foul language spoilt it for me. You make a really good point about negative comments being unnecessary, but do us a favour mate and leave out the swearing! You can make a powerful point and communicate effectively with out the dodgy language. You're a decent engineer, keep up the good work bruv!

[@optimumwashleaders8189]

My dude, that feedback you gave for all of those fake techs, immediately made me put my tools down to give you a thumbs up 👍🏽! Keep doing you!

[@JohnMcAlpin-eg2nz]

Thanks BigDog, your video was of great help led strips were $34 at Amazon, TV works great.

[@gearhead366]

Thanks for the power supply checkout portion of this video. I don't have an LED tester, but I DO have a DMM, so this is perfect. I've found many videos for LED strip replacements, but none show how to check out the pwr supply. I have the 50" version of this tv, with one segment not illuminating. The power supply checks out fine, so I now know that I need to replace the LED strips. Haters... ignore them. I'm an EE, with lots of bench experience. I didn't see anything wrong with your troubleshooting & repair process. Keep up the good work.

[@richardkhedges]

Dude, super helpful video! Thank you for taking the time to make this. I wasn't looking forward to repairing mine but this video settled me and made it a whole lot easier. Fortunately my diffuser screen wasn't cracked. The LEDs weren't burned either, it just appears they died out.

[@rodwillett8814]

Excellent video as usual. Because of you I’m picking up free TVs & repairing & selling them.

[@devildog3644]

You are the best place to get information in fixing a television. Thanks for the step by step method. method.

[@saarike]

Simply great! Electronics, chess and other difficult things teaches us humbleness. I fixed 39 inch Samsung backlight by changing individual backlight. I learned from youtube, that by warming the strip under with hot air gun you can remove led quite easy. In my experiments 400 degree was quite good temperature. I have to say, that these repairs are more difficult in practice that you could imagine when you watch someone else doing these in youtube. So you have to be very humble, there is so many ways you can burn your pants. 😀😀😀

[@toosal]

Thank you so much for taking the time to put this video together for all of us to learn from! I appreciate how comprehensive it is so I can actually learn about how this tv works while I’m fixing it (I found one on the side of the road today that is perfect except for the one black side, what a come up 🙏)

[@Nilmoy]

me too, same event, same problem.

[@prof.grimes8937]

This video is outstanding! Thank you so much for creating such a thorough walk though of the LED replacement. The close ups provide exception detail. Unfortunately for me, I cracked the screen when installing the outer bezel. It was totally my fault. The screen was overlapping one of the edge guides just enough that it cracked when I applied pressure to snap the bezel in place. I can't stress this enough- double check to make sure the main screen is centered and within the bounds of the edge guides! Do not force it if the outer bezel is not going back on easily.

[@longnguyen5855]

Fixed my TV using your video! Big props! Thanks for sharing your expertise!!

[@misterfixit1952]

Bigdog, I love your commentary about interacting with customers. You are what I need and I thank you very much for the time you spend helping me. I used to do computer warranty repairs for Dell so I know exactly what you are saying about customers. Thanks, Bro, keep on keepin on.

[@whizzo55]

Another great video with a glimpse into your life. Who could ask for anything more? We two think alike, stay humble, not angry. Thanks man!

[@D1uft]

Thanks, Big Dog. You have helped me to mend my TV. I also like your chatting away to yourself 😅

[@euanarmit8730]

You are a hero. Thank you so much. You have saved me having to buy a new tv. Big up the big dogg!!!

[@K405V1LL3z]

There will always be haters. I have watched this vid twice. Once tearing my TV apart, and once putting it back together with new LEDs. My TV is full backlit and working like new because of your vid. Keep it up man, Cheers!

[@K405V1LL3z]

I have no experience with this type of repair, but for kicks I flipped my defuser screen 180 during the reassembly hoping the shading would be gone and it worked. This may not be the case with all defuser screens but it certainly worked for mine. Anyway...thanks again for your vid!

[@bigdog8882]

Glad it helped Stef.

[@Somanathan-hj7ge]

Sir,in this world no body repaired led TV's like you had done,in sleeping mode, you are awasome sir,😊 super, very good command in English language,clear English any body can follow your speaking, you are Handsome and brilliant 😊. From India 😊 all the best 👍

[@richiesavage8672]

Haters always going to hate because some haters can't do the same things that you do so keep doing what you do homeboy appreciate you

[@priyeshpatel4382]

Only repair guy ive seen with my own eyes with common sense. Now I will fix this shit on my tv with confidence.

[@TS-qd2uj]

New to your channel. Thank you for your time explaining things, right down to what to expect from different pins as well as understanding the boards. I look forward to watching more of your existing and future videos. I don't think you'll be running out of work anytime soon, given the poor quality of these TV's. Mine just went after two years. Used the tape method to get it back running but seeing too much green, purple and pink on the left side of my UN58TU7000FXZC, so I'll be going at it again soon and experimenting some more. There is no way I'm buying another TV anytime soon after just two years with this junk. Come to think of it, their fridges are garbage too and their new phones not far from it. But the other choices are no better. Thank you very much for taking the time, this is much appreciated.

[@franciscosandoval9766]

Thank you so much for this video. I was able to change the led light on my tv. Spend $30 plus 18 for the suction cups at Lowe"s. Never open a tv in my life. You would be a great teacher. Hello my friend from Palmdale California

[@bigdog8882]

Glad it helped

[@allengordinier2233]

Today I watched your video on how to fix a cracked screen, loved how you took it from using black tape to the one final step (Bang!). I laughed so loud my wife asked me what was going on. Loved it

[@sellomahlo9034]

My brother - i really do appreciate following how you do fault diagnosis - you are really good and i have been watching quite a number of times the methodology you have been applying - your content is always spot on second to none- keep it up.

[@SilentWeeb]

Thank you so much for making these videos! If it wasn't for you, I would be at Best Buy right now. Please keep making these.

[@houssemlaib7592]

Thanks man I replaced the LEDs on my tv and is all working great video

[@williesturner9398]

Thank you so much. Now I know how to fix the black spot in my daughters TV. Your instructions were superb, God bless, keep the videos coming.

[@vidalbelen775]

I have that same problem on my Samsung 55 inch tv. Following your instructions i am hoping to fix my tv because of the approach that you use. Thanks for your time and keep up the good work.

[@gobshite5150]

Dude you are my hero for this week, this is *exactly* what I needed. What is up with all these Samsung Smart TVs with the faulty LED strips!? My TV wasn't even 3 years old when half my screen suddenly got these 2 vertical shadows from bottom to top one day... but for 25.99 for the replacement LEDs I'm not even worried about it anymore. Thank you for posting sir!

[@buzzabuzza3494]

Very informative and interesting you have a lot of patience i must say.I have the same problem with my Samsung Tv unfortunately i definitely won’t be trying to fix it myself having seen how much work is involved.👏👏

[@ralphbhola8886]

Glad u got that off your chest brother. Definitely some haters out there. You funny too😂 .Great job.

[@kevinmcdonald4483]

Thanks big dog for your honesty we all have a past thank you for your service from across the pond God bless

[@pressleyneel7527]

Brother you doing a hell of a job and you save me a lot of confusing and time

[@druppy12th]

I washed your video for first time, and I’m so impressed by the way you teach us and shared all you experience, thanks God good persons like you are here helping people they don’t even know and those actions are to administration are those who think they know everything and write some shit, those people never help any body and don’t have nothing else that tray to bother a good people to help other’s like you, thank bro for your excellent job I’m learning a lot thanks and God bless you and your family.

[@bigdog8882]

Thank U for those very kind words Maurico. Blessings to U also.

[@kurtismckeown3687]

Thank you so much for this tutorial, I had a similar model of Samsung TV with the same issue and was able to repair it for a total cost of about £30.

[@Luka7517]

Best video I have seen about fixing TV's on KZbin. Best explanation, best tips, best dissembly tutorial, best commentary, overall 10/10. And as you said there will always be haters just don't let them discouraged you, we have right to do whatever we want and however we want. If someone don't agrees or likes your content they should have keep it to themselves or go watch something else! Anyway seeing you teaching us how to fix our TV's gave me strength to try and fix some of my own broken TV's. Thank you so much, I am new to your channel and I am definitely subscribing.

[@bigdog8882]

Appreciate U Dusko, Thanks!

[@racerx2k2001]

Thank you so much for making this video. I have this exact TV with the same issue except the middle part is dark. This helps tremendously!

[@aberodriguez4149]

Great video !!! Great tutorial !!! By the way I too was into TV repair when we had to wait for the vacuum tubes to heat up, LOL my TV is the same brand only it's the 65" model and now that I see the actual work and process and space required to get the job done. I am really thinking hard about finding a TV Tech out here or buy another TV on sale. Thank you for your time and knowledge sharing GOD bless you !!!

[@ufumbduck]

Oh man my TV same model as this has LED out. This is a perfect tutorial. Thank you for posting this up amd saving me hundreds!

[@bigdog8882]

You are welcome!

[@thedarkweeally]

Samsung learned their lesson with that flawed design in later models as they put a plastic bracket (with holes for the leds) between the chassis bottom and the perspex defuser sheet to introduce an air gap to aid cooling in the hopes to avoid the burn out you see here. I've attempted to repair over 100 of these "edge lit" led tvs and only successfully managed less that ten due to this issue and the lack of spare perspex sheets. You'll always get the unit up and running but the burn marks will streak across the screen from bottom to top and will be very noticeable on every picture unless it's a night scene. My advice to anyone looking in - if you find these burns - save your coin and invest in a new TV - unless you can get that perspex sheet of course, otherwise bin that suckka!

[@jamespeters920]

Damn, i can't believe people don't appreciate your videos. I find them very informative. Please accept my thanks for posting dude!

[@iancollins8084]

I'm from England and I've watched your videos time and time again bro, I'm gunna fix my Samsung 55" led screen this week from watching your videos. Ain't nobody explains it like you do 💯👊 Mass respect bro 💯👊.

[@iancollins8084]

Fixed my telly with all the gratitude in this world for this man BigDog, without your expertise, intelligence and knowledge this WOULD have been a costly repair. I got the TV for free from a relative because the picture was showing dark line then within a week half the screen black and then gone Zero picture. The diffuser board also got a few scorch marks on it as well!!! But never mind that, at the end of the day it's SORTED 👌 !!!!**FIXED**!!!! Thanks again man.👊💯🇬🇧

[@briang.7206]

Big Dog a lot of skill in needed in just taking these sets apart and putting them back together. And you do an excellent job of that.

[@Sonkalino]

I have a similar EU version of this TV, an UE55NU7102. It has smaller differences, but the disassembly and edgelight change is the same. Mine was in worse shape, it had like a dozen cracks on the diffusor, and bigger burn-ins. I screwed up and ruined the panel sadly. But I would not have even tried if it wasn't for your great tutorial. It went decently, despite i've never done it before. Thank you for your in-depth video, greetings from Hungary!

[@brandon3482]

as you may know democracy is under attack. The freedom of information is key to the success of the democracy. you spread knowledge and information. You have become a target. god bless and keep up the fight! your videos are hot fire my man. I almost watched 35min until I even realized that the video was 1:10 long lol. smooth.

[@michaelfox1882]

AWSEOME Father-Son Project on a Saturday! Thank you so much for your video!

[@bassman8564]

Thank you very much for sharing your talent. Really appreciate it. Keep up the good works and pay no mind to the heaters. 🙏🏾👍🏾

[@maligno1000]

Thank you for this video. It was very helpful I'm going to do my son's TV as soon as the suction cups come in.i am also from chi town ;)

[@melvinvillalobos3060]

Thank you so much for the videos. I follow all your steps and I was able to fix my 55” Samsung, working like new again all thanks to your video and 49 bucks for the parts. Thank you.

[@bigdog8882]

Nice work!

[@CuddaBrown]

Man they brought the hood outta my man right quick.. Don't let the trolls wreck ya cool my bro. As a black television tech on KZbin you make me proud. We need more like you.

[@bigdog8882]

Lol.

[@mattmarasch2929]

Awesome explanation. Thank you!

[@Aintright1965]

Thank You for explaning this process My Samsung is dark on one side like this one is and I'm going to fix it Myself thanks to You!!!! I appreciate You more than You know!!!

[@dougscott5859]

Great video. Helped alot. Keep up the good work. Ignore the haters, like you said they can stay in their lane.

[@6figures60]

I found this very informative. I watched another informative video that showed there had been a small fire in the LED lights, but it was a different type of LED lighting from what is shown here. I think this may have happened to my TV. About 1/5 of my screen is smoky (no distortion), but not completely dark. It's about 10 years old. I will try to open to see, because if it shows fire damage, I will trash it and buy another TV. If it's this type of LED lighting I don't think I would be able to do this, but at least I understand the issue if I decide to have it repaired. Thank you.

[@normanbates2909]

I love your overall attitude bro. What got you into repairing TV's? My youngest son just gave me this exact TV and I am so looking forward to troubleshooting and repairing it. I worked for Time Warner for over 22yrs. before my first lumbar fusion back on 2005, had my last one in 2020. You give me a voltage meter and a decent set of tools and I can fix it. If not, then the damn thing is BROKE. You keep up the excellent work and us old timers will show these youngsters how it gets done!!!!!

[@crawdaddy34]

Thanks for sharing, great detail in your videos. Shout out from Canada. Keep 'em coming eh?😀

[@GlycerinZ]

There's always gonna be haters; pay them no mind. I like the way you work, because it's similar to how I work: Meticulous and doing the job correctly. Thanks for the vids

[@johnnyhernandez8899]

Thank You so much Big Dogg ur the best and god bless u and fam and a big thanks brother for taking time on doing this type of video cause I been learning a lot from u this is like my 7th Tv I have fix and is so easy just follow ur steps. TV I just did right now is a Samsung UN55NU6900BXZA that I found a week ago and only cost me $20 for the LED strips and 2hrs of labor. Thanks again big Dogg

[@angelc7984]

You’ve helped a lot, thank you. Great job.

[@bigdog8882]

Glad it helped!

[@coinsagE46m3]

This was a huge help, thank you very much for taking the time to make this video

[@ricky5176]

Sr ur camera work is on point. I will attempt to do a repair. I do want to be responsible and lessen the e waste on the land fields.

[@mikeallen468]

Excellent, easy to follow video! I need this exact repair. Thank you for sharing your knowledge.

[@kevinmcdonald4483]

Your doing a fantastic job in what you are doing I learn a lot from you please don't stop for no body God bless you

[@zachgreen1946]

Thank you BigDog! First video I've seen of yours and had a successful repair the first time following your tutorial. Much appreciated. 👍

[@bigdog8882]

u BET!

[@DenisKoutser]

Thank you!!! great video! with your manual i changed leds in my 7100!

[@bigdog8882]

Nice work!

[@joeharley7989]

Thank you for sharing this info on TV repair

[@Sophomore451]

Great instructions video. Just perfect demonstration. Thank you.

[@evilanas]

You are a great man, love from Africa

[@johnparker9482]

Outstanding work Big Dog

[@davidsago9756]

You tell them my friend. Have a great day

[@bigdog8882]

Thanks, you too!

[@peterwin1719]

Thx for the vid. Really helped with your step by step.

[@dadwillfixit1907]

Great video mate thank you for the content

[@nashjobsen8280]

Thank you for your contribution. Because of this video, it helps me save some money. Kudos, I like your style of explanation and instructions.

[@bigdog8882]

Glad it was helpful!

[@Themothership90]

Hey dude thanks for making this. I was able to take my tv apart, slightly different model but same set up. And even with this model same thing with the cracked screen. I believe that customer had power surge bc similar to mine i have all but like 9 of the bulbs out i got to replace the 2 strips. But i was able to find that out thanks to u. Much appreciated and keep doing what you do.

[@mco717]

Thank you! This was a great video. Just fixed my tv. You're awesome.

[@bigdog8882]

Great to hear!

[@skippyvb]

Hi BigDog, awesome job and video! love the rant in the middle 😂, totally agree with you. My wife took this TV home from work after it developed a darker section on the screen. I took it apart with your help and found several LED's out. Now waiting for replacement strips. We'll see if I can put it back together without breaking anything (already cracket the bezel taking that off... oh well). BTW I'm a big Bears fan and am looking forward to this upcoming season, let's hope the O-line will be and stay healthy and ball out! I hope you are doing well and take care. Thanks Again!

[@MrFatboy192]

Awesome video I've just repaired my exact same TV only difference I did was not lift the very back sheet out, I just slid it up and changed the LEDs, the white paper was stuck in the middle a little did get a belt off the LEDs tho, one connecter was stuck, next time I discharge the caps! Top tip put it on a blanket on the table and slide it around,

[@armorkat-autoworks]

Thanks, great video . Got a 43" Samsung that has issues with one side out. Can get both to light up individually with an LED tester, but both will not work. If I disconnect one the other works. Going to change the LEDs as both have a few burnt out. One has 8 of the 28 out. Hope the board is not the issue.

[@genesmith4019]

Thanks Dog!

[@TerenceLeaf1]

Don’t let Man Baby’s or Haters get you down I watched your videos I appreciate your work I’m sure there is a lot more people who like your videos and a hell of lot less of those Man Baby’s out here keep up the good work !

[@patrickleuck6387]

Thank you very helpful