Repair Hack Explained | How to Fix TV Horizontal Lines - Part 2

In this part 2 video I show you how to remove horizontal lines with tape and explain why it works.
GET THE FREE PDF (26 pages). My best tips on how to diagnose a broken LCD TV without taking anything apart → frugalrepair.c...
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Tools Used in this Video (the amazon links below are affiliate links) :
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[@FrugalRepair]

Do you have more questions about how LCDs work?

[@yusakchannel6473]

I'm from Indonesian your video is very good but I don't understand English. Please translate it into Indonesian.thanks

[@FrugalRepair]

@@yusakchannel6473 I wish I knew how my friend. I am sorry. Let me know if you know a way I can translate it. Maybe you can find an english speaking friend to help you.

[@yusakchannel6473]

@@FrugalRepair ok thanks my friend.

[@kylenickels973]

@@FrugalRepair Is there anyway to direct message you? I'm having a unique issue with an lcd tv that I'd really love your help with. I've searched for weeks to find a right direction to go in and your tape methos seems like it could help my my problem is a little unique from what I can gather.

[@kylenickels973]

@@FrugalRepair my issue is from top to bottom on the right hand side of the screen, about 5 inches wide. Every so often it'll flicker black and white horizontal lines. The TCon board is built into the mainboard. Ive tried 4 new boards and 2 new PSU. If I change the ribbon cables the issue will switch from the left to the right side of the screen. 1 long and 1 short cable the problem will be on both sides. 2 short cables it only happens on the right. Its very intermittent.

[@Mina-pq3rm]

I can’t believe it. I fixed it. You saved me hundreds and hundreds of dollars on a new tv. I had barely had this one for more than a year. I’m so relieved.

[@oluwatobiAdeniyi-rp1ix]

Is your TV still working

[@robc9623]

I bought an LG cinema 3d TV for $50 at a thrift store. It was made in 2013. It was brought in because, although it worked OK, it had some fine horizontal lines on the left of the screen. Before purchasing it, I remembered something about the problem from a You Tube video I saw a while back (Your one!). I took a chance, brought it home, reviewed your video again, used the trial and error technique to identify the problem lines, taped 'em up and BAM, the lines are now gone! The picture is now perfect. I can enjoy my 3d movies again. Thank you so much!

[@FrugalRepair]

Wow, that’s so great to hear! Congratulations!

[@LuckyMTS]

Yep that’s the best story time ever made.

[@bobbarnaby3298]

Its refreshing to hear a clear spoken video, not 50 oks n yeas...your a breath of fresh air.... thanks I look forward to watching your videos.... this Bob

[@FrugalRepair]

Thanks for watching!

[@regisateparece]

Cheers from Brazil. I took me 3-4 hours cutting tapes stripes and checking results, but I’m the end it was fixed 100%. I checked your video about the LCD patent also. Amazing video - the best I find out. Very very good! Thank you again… my SONY 4K 65 inches is back on track! Great!

[@FrugalRepair]

Great to hear! Congratulations.

[@kunalraut9509]

I use to repair Lcd/Led tv repair on regular basis. Came across these issues frequently and have resolved many in the past with these techniques. I appreciate ur efforts with visual explanation that even non-technical person can give it a try before throwing their stuff as a scrap.. Great work.keep going👍

[@FrugalRepair]

Thank you for your encouragement!

[@omarhussien6671]

You saved me from being deceived by reformers, I live in Jordan, and no one understands these things well, and you have to pay a lot of money. Thank you

[@FrugalRepair]

Glad to hear it helped!

[@fadelshaker1257]

اللسلام عليكم ممكن اخي اعرف اي جزء الصقه وشكرا

[@omarhussien6671]

@@fadelshaker1257 اخي لا تعتمد وديته عند مصلح و صلحلي اياه على الة كبيرة ما زبطت طريقته و خطرة

[@omarhussien6671]

@@fadelshaker1257 وعليكم السلام

[@abandoned_acc]

I have lines that are almost transparent and move do you know how to fix this lg phone screen problem

[@bobikbobikowy5458]

DUDE, YOU JUST SAVED MY TV! It was working only 2 years and lines apeared 1 month after warranty end. I tried to fix it, but diagnosed its faulty matrix and was about to throw it out. Today i tried using tape on random pins, and it works like new! THANKS A LOT FOR THIS VIDEO

[@FrugalRepair]

That’s so great to hear! Congratulations on the fix.

[@diveshrustagi6188]

@@FrugalRepair Sir I have a 55 inch vu led tv which hai horizontal lines in it and tried to fix it with tape but I believe I cannot find where to put the tape. Also when I remove one of the strip from t-con board the other part of the screen didn't go black like yours did. So is this normal or there is some problem with the panel ?

[@anjalymeldhose]

Amazing!!! Really..I have a two year old IFFALCON LED TV 55inch. All of a sudden it started having horizontal moving lines. As usual I called the customer care and a service tech visited my home. He said the panel is gone.Replacing it will cost about 85% of new tv cost. That's when I found your video and thought will give a try. I don't understand electronics or anything. I couldn't read whatever is written on the board.I tried the try and error and VOILA!! My tv is now working. There are few black lines in bottom left. But I don't mind those few lines in such a big tv.Even 4k looks good only. So thankyou sooooo much.

[@FrugalRepair]

Great job!

[@hitro2247]

Hey dude how long did your tv last after fixing with the tape or is it still rocking ?

[@carlitomadrona6211]

so far this is the most detailed tv repair tips and explainations, thank you sir.

[@FrugalRepair]

Thanks for watching!

[@DIYDaveOK]

I just fixed a three-year-old Vizio M558-G1 by applying the opposite logic on the image vs control lines. Vertical lines dominated the picture, and removing the TCON cables revealed the problem to be on the left-hand side. From your video, wherein you pointed out image data is vertical and control/timing data is horizontal, that told me I had an image information issue. Before then, I had no idea which pins to cover. That data limited the shorted vertical image processor to one of six on the right and I inferred that meant six control lines. Covered them all, and the picture came back immediately with a shadow in the lower left corner. I then started working one at a time, starting with line 6, then 5, and *bingo*, the picture was back with no flutter. I put it back together and it has been running perfectly for about four hours now. You just saved me $1,600 I was getting ready to plunk down on an LG G2!! ❤️

[@rickdelpino472]

You’re explaining this more in depth!!!! Thanks!!! But I would really really want to repair the clock signal...I love too much my TV and want to learn more about replacement components.

[@FrugalRepair]

Thanks! My guess is that the problem is somewhere embedded in the panel. Maybe with the right tools you could get in there without damaging the panel. It would be tricky though. I would like to have a full schematic of the panel, that might help to pinpoint where the issue is.

[@Pfirtzer]

@@FrugalRepair I saw some guys on YT repaired it by cutting the connection on the board it self instead of using tape. I have a Samsung I got for free a 42'' inch or so, bought a Panasonic for 60 euro's a good one and 12 euro's for the remote. I have the feeling older tv's lasted much longer than the flatscreen do, they are just a throw it away. My mom bought in the 80's a Schneider that had an ITT tube, worked for 17,5 years constantly on, many people told us, it was trash, well known brands were gone sooner than our tv set.

[@kaleidstone7153]

Thanks for describing the relationship between the transistor and capacitor and the vertical and horizontal exchange of data and frequency band

[@rajneshlal7267]

Thanks for such a great explanation I have never seen someone explain about this problem so well and organized

[@FrugalRepair]

Glad it was helpful!

[@TheJerad1]

I tried this method with my LG 75UH6550, There was marking on the board itself that said which pins were clock pins, so I taped them off and it worked!! The tape was about the same width and at the same place as in the video. Thank you for making this video, it saved my Superbowl Sunday!

[@FrugalRepair]

Congratulations on the fix! And just in time for the Super Bowl!

[@danc8355]

Thanks so much for making these videos! I looked around for repair insights like this back in march, but glad I kept the broken TV "just in case". Also, your continuity test "swipe" at around 5:25 was really reassuring, as I would've worried I could short something else out by just probing those tiny traces at random. Thanks especially for that!

[@FrugalRepair]

Thanks! I hope you can get your TV repaired.

[@ktolwal]

@@FrugalRepair Hey bud, my TCL qled panel got damaged , my son threw a hanger at the screen, there was a crack and white vertical lines about 2 inches in that region, after a month of r&d the tcl person gave me a about 200$ quote, now my question is how can i figure out whether he has fit a qled panel or a UHD panel

[@quadsearcherjohns2647]

@@ktolwal If TCL quoted a price lower than new purchase price of an entire similar TV, there must be a misunderstanding. LCD panels always cost more than a new TV especially considering shipping and installation. To answer the question, There is only one specific panel for a given TV, no substitutions.

[@Dragon-Slay3r]

Thanks commentor you can be frank too

[@mahaliadaniels183]

Thanks so much for this video,I found it yesterday,and it helped me fix the flickering of my Toshiba 3D 40inch that I have packed and dump since January this year 2020 and was trying to sell it off for less than $50 dollars still no one was willing to buy which I am now so grateful no one bought it😀😀 now my 4yrs old daughter is so happy she got her own TV now😍😍.thank you thank you thank you.

[@ricardoe.berbis2312]

Extraordinaria forma de explicar una solución y, al mismo tiempo enseñar como funcionan las pantallas lcd. eres un buen ser humano. Muchas gracias God bless you

[@zainabbas422]

Man !!! You are legend ! Ive been banging my head with lvd ribbon cable, even swapped tcon board but couldn't figure out whats going on. Your explanation answered my question..and ur method worked 100%. For me (Samsung 50" smart) it was the last set of 7 lines in right ribbon cable (if looking from rear of TV) I did like 20-25 hit and trials of 7 lines wide tape and finally hit the exact set of lines ! Thank you so much brother, you earned some prayers from me :)

[@FrugalRepair]

That’s so great to hear! Thanks for sharing and congratulations.

[@hburgtech]

Thank you for figuring this out. You are a great person. Blessings to you and your family.

[@FrugalRepair]

Thank you for the encouragement!

[@rustymit6399]

Thanks so much for being here. I have collected all the things I need but am stumped at locating the clock pins. I’m working with a Sony tv and the board is an le650aqp. Is there a certain page or specific language to use to find which pins on the board are the clk’s. Thanks in advance for any help you can provide.

[@FrugalRepair]

You can use a multimeter in continuity setting to find pins that are electrically connected on both sides. Look for a group of them in a row and that’s probably them

[@rustymit6399]

Thanks so much, I’ll do that.

[@rustymit6399]

Good morning, I’m still having a problem finding the clk pins. The t con board has 4 ribbons and I’m not sure which set to use. Any suggestions?

[@markmartin4719]

FINALLY the Louis Rossmann of LCD TVs!! Your last video troubleshot a TCL LCD, I just had a 43" 4k TCL flicker then the backlight seemed to fade out on the right side. I see the image across the entire screen however it gradually gets darker the further to the right. Any troubleshooting suggestions or can you perhaps create a video on how to repair / troubleshoot backlighting on LCD panel? Big thanks, thumbs up and sharing your channel.

[@FrugalRepair]

I feel honored being compared to Louis Rossman. Thanks for the comment and share! Did you get my pdf? I have a led backlight suggestion in there. Sounds like you need to replace some of the LED modules. I’ll create a video sometime, I’ve got a pile of free TV’s people have given me.

[@markmartin4719]

@@FrugalRepair Joined the email list but have not received the pdf.

[@FrugalRepair]

Let me know if you haven’t received it. It takes a few minutes to send out after someone subscribes.

[@markmartin4719]

@@FrugalRepair I received the link, thank you! I've tried dimming the brightness as suggested but the dimmed side is dropping in brightness as well. I would expect the bright side to match the dark side when decreasing the brightness at some point IF a backlight LED was out. When the startup screen appears after a hard restart the entire screen is PERFECT for 2 seconds, then the dimmed area appears. Possible power/short issue I wonder? Any suggestions would be awesome, thank you.

[@FrugalRepair]

Good to hear you got the link. What you are describing sounds like there is at least one shorted LED module on the darker side. The reason you get full brightness at boot up is that the power supply ramps up the voltage all the way and then the short circuit happens to take it out some others LEDs (maybe it's localized to one of the LED strips).

[@ysw6725]

I waited for 2 years to find a solution for my 55EX720 3D TV double image problem, and today I managed to fix the issue, as suggested by using a tiny strip of cellophane tape. Thank You.

[@FrugalRepair]

Congrats on the repair!

[@Nelson93]

This is the most detailed video on how modern led TVs work. pixel level detail. awesome. please make more videos

[@FrugalRepair]

Thanks! I plan to! Let me know if you have any suggestions. Next video is about my diy solar install.

[@edwardumoh4844]

Hi am so happy to meet someone like u on KZbin that knows so much and explain stuff well. I have some problems with electronics.

[@dutch6649]

Amazing video man! I really appreciate the time and effort you put into this. I spent way too many hours on this when you summed it up in mins. Other videos wouldn't go down to the details that you did, leaving for an incomplete understanding. Thank you.

[@FrugalRepair]

Thanks for watching! Glad you enjoyed it.

[@caldershot9702]

Looking forward to trying this with my Samsung 65”. Thanks for all your knowledge. Stay safe.

[@FrugalRepair]

Hope it works! Let me know how it goes.

[@djwilliams4714]

Good explanation. I have been doing this for years as a repair shop. I have found it a lot easier to use a post it note (non sticky side) and cut in varying size strips and moving from side to side.

[@FrugalRepair]

Thanks! Glad to hear you have been doing this too to bring back the picture on the screen.

[@MCPizzle313]

I can’t thank you enough! So awesome! Found the rows, cut the tape and the tv works perfect!

[@FrugalRepair]

Awesome! Congratulations and thanks for coming back to let us all know.

[@arianmelegrito5858]

hi. which area need to put a tape

[@peter84collins]

I've watched a few videos about using the tape trick, but have always been mystified how it works. Thanks for explaining.

[@Binodbinubinod123]

When all you wanted was to fix a tv but you come out as a tv expert

[@junosprite007]

Bro, this basically fixed our TV. We taped over the left-most 4 pins on the left side ribbon (looking at the back of the TV, oriented right side up). The only down side is that it seems the red LEDs are affected by this. There are horizontal wavy patterns every time a lot of red is shown on the screen (like in Netflix, for example). Either way, our TV literally randomly started showing lines and color stains, and this helped us completely get rid of those, so our TV is watchable once again. Thank you so much, dude!!!

[@FrugalRepair]

Congrats, thanks for letting us know!

[@junosprite007]

@@FrugalRepair It's so appreciated. We noticed when watching shows now that the right side of the screen is really missing a lot of red in the color. It's like when character move from left to right, they get dreary and depressed as they lose their vibrancy haha. Might do the same thing with the other side of the screen so that there's at least no difference. Do you know why this would happen?

[@nbaua3454]

You saved tons plastic + e-waste, some smart guys definitely be using this trick.

[@chrisconlon7970]

Well done. Your intense and thorough studies paid off. I looked at so many fake rubbish videos I almost gave up. Thanks for the real answer.

[@FrugalRepair]

Thank you for your kind words.

[@serafincastilla]

Awesome, i just discovered your channel yesterday and now I'm wondering what do you do with all of these repaired TV's?

[@FrugalRepair]

I hope you’ve enjoyed the videos! Haha, I have lots of TVs. But some are friends that I fix for them, some I might give away, some we keep, some I might sell.

[@Daniel-dl6fp]

Omg it worked i cant thank you enough i really wanted to buy a tv for my room but i spent my money on a pc i recently got a free lg 32" tv from adverts i spent 2 days troubleshooting and now it works you really inspire you i cant thankyou enough for your info i want to do electrical engineering or repair when im older and i have leared so much from your video keep up the incredible work

[@FrugalRepair]

I’m so glad to hear you fixed the picture on the tv. Congratulations!

[@juliaosborne5020]

Thank you very much for this video. My LG 42UB820V developed the same fault as described in your video. I located which side was causing the issue and identified the clock pins (there was 8 from pin 3 to pin 10 on the ribbon). Small piece of sticky tape over the 8 pins and all back to normal. What an incredible fix, sheer genius!!

[@revolverabdo00]

Hey, how did you locate the faulty pins?

[@welshdave5263]

Dude! Thanks for the explanation! Picked up a free Samsung smart TV and watch two videos showing to use tape but they didn't show the fault finding process, now I'm off to give it a try.

[@nuieaatkins7729]

Took me a while to decipher the signals but managed to figure it out. Really good video 👍

[@FrugalRepair]

Congratulations! That’s great to hear.

[@narasimharao1268]

Hi Sir, I am Rao from India. I did as you described and solved the issue of horizontal lines. Thank you 😊.

[@DumbSkippy]

You are such a nice guy for sharing your knowledge. Thanks a million from Perth Western Australia!

[@FrugalRepair]

Thanks! I want to help as many as I can to be inspired to tackle projects themselves and repair things rather than throw them away.

[@robertespindola1255]

Today, after watching your video, we fixed 3 TVs that TLC said were out of warranty. Thank you.

[@FrugalRepair]

That's awesome! Thanks for letting me know.

[@Bada4ever]

If you use trial and error again, like you did in another of your videos, could you find which exact line or lines were causing the malfunction? Therefore, wouldn't less tape blockage boost the signal by chance? Thanks again for your content! I'm trying to fix horizontal lines on a TV given to me.

[@FrugalRepair]

Finding the exact cause can be tricky because it is likely something not visible (or accessible) inside the lcd assembly. So you need to do trial and error diagnostics from the outside (ie mess with the row signals) to try to narrow it down. The row signals are individual so there isn't a boost, per se. It's a bit complicated to explain but that's what I was hoping to do in this video, lol.

[@johnsack7903]

just used this method on an Insignia 50" 4k tv with horizontal line across it and it worked...I just took a small piece of tape and just moved it around and i found the spot....Thanks

[@FrugalRepair]

So great to hear!

[@bignormster]

Thanks for the insight, I managed to repair my LG TV, that I was just about to throw away, with just a little piece of tape! Awesome!!

[@FrugalRepair]

Congrats!

[@laneiaroman4189]

Great videos. I have a Vizio and it started to darken in the top right corner, I was thinking it was the light. After watching your video and now my tv screen has a line going all across on top. I would love to repair it myself if I can. I would appreciate any help. Thank you in advance.

[@FrugalRepair]

Thanks. It might be the backlight or the lcd panel or both. Try the isolation test and if both sides show the same problem then I might suspect the tcon board is bad

[@bernardlim128]

Thank you very much for sharing the engineering behind the TV signal. This is really very good. I learn so much from such a short video. Awesome!

[@FrugalRepair]

Thanks for watching!

[@baldwinyinkore9441]

Just tested this on my Hisense TV which had double lines on it and YES! it worked after about 3 trials. Screen all clear

[@FrugalRepair]

Congratulations!

[@ethaneberly]

The man the myth the legend 🚫🧢

[@FrugalRepair]

Not quite, but hope you enjoyed it!

[@faridaali7997]

Thank you so much...my husband tried this and it works very well now.Thank you from Trinidad 🇹🇹🇹🇹🇹🇹🇹🇹👍👍👍🙌🙌👏👏

[@FrugalRepair]

Wonderful!

[@beard-monster]

This is awesome! What if you wanted to actually fix the problem though? Is this issue caused by a bad resistor, cap or chip?

[@stevejeffrey11]

Could try opening the TV & replacing the T board & screen tape but it's probably cheaper & easier to get another TV

[@db33519]

Just come across your video, it has saved me. My tv was exactly this and a little bit of tape sorted it out. Thanks bud 👍

[@FrugalRepair]

Awesome! Congratulations on the repair.

[@glaxylin]

Thank you for making this video with clear explanations. I used to work in lcd panel factory in Taiwan as a HR, but the factory R&D never taught me such a useful tip, even though I may not be able to open the cover, test the voltage, and fix it by myself. Still thanks anyway.

[@FrugalRepair]

Glad it was helpful!

[@antoniska123]

Thank you very much for making these videos. I need your help with a Samsung TV that I have. Once I disconnect the one of two ribbon cable I see half white screen with horizontal lines . Once I disconnect the second the other one I see the same half white screen again with horizontal lines but on the other side. Is it a symptom that t-con board is faulty or I need to place a tape in the correct pins on it? Thanks in advance Theo

[@FrugalRepair]

If the issue is consistent on both halves during the test, then I would suspect the tcon next

[@Kurtis761]

I've fixed 4 different models of LCD tv's with one simple solution. Remove the back cover of the tv, take a good can of compressed air, and blow out as much of the dust as possible. Make sure to concentrate around all the capacitors. And I'll guarantee you 80% of the time, this will fix your issue and the lines will disappear. So try this fix before contacting a repair centre, or even replacing the tv.

[@joshuaabere3503]

Thanks

[@MWFE]

80% of the time it works every time. lol

[@hectorguevara6069]

+FrugalRepair Thank you for the explanation. I had seen people using tape, but they did not explain WHY. I have an electrionics degree, struggling to understand why blocking signal fixed a screen issue. You have shown the theory behind the repair. Much appreciated.

[@FrugalRepair]

Thanks for watching!

[@AG-ru4je]

Frugal Repair - I watch tons of your videos just because I like to learn stuff like this in case I ever need to know it. Haha. You have a great way of explaining things, and keeping the videos super interesting. (Especially with the extreme close-up footage, and heat tracking elements). However!! I need your help, I know that this is a two-year-old video clip right now, but I am hoping that you are still reviewing comments. If yes! Please shoot me a reply. I have a 2019 Insignia LED/LCD TV. That has perfect horizontal lines, across the entire tv screen. (Top to bottom, left to right). Help me Obi Wan FrugalNobi! You're my only hope!!

[@FrugalRepair]

Thanks for watching and your encouragement! Did you try everything in these two tape videos? That should help you narrow down if it’s the lcd assembly or the tcon is at fault

[@AG-ru4je]

@@FrugalRepair I am trying to determine where to start, because it's the whole screen (literally 100%, perfectly even lines. The only anomaly is at the very bottom of the screen, there is what looks like a dotted white-blue line riiiiight where the edge of the screen meets the plastic bezel). Regarding the tape trick, and trying to tape off pins 1 by 1... How do I know which TCON ribbon to start with? I left the TV powered on, while I removed and reattached the TCON ribbon cables... And the lines were still present regardless of which I unplugged. So.... Would I need to just block them 1 by 1? That would take hours, lol. They are practically microscopic pins haha 😂 I'd love you shoot you an email with some photos or a video. To get your input! Thanks so much for the fast reply!! You are awesome. 😎

[@AG-ru4je]

Any feedback or input on this??

[@AG-ru4je]

Darn..... Guess I'm stuck on this one... really don't want to throw this TV away... i think it could likely work for years to come! :(

[@user-zg2ym2ql9p]

should've watched this long time ago,one of my sisters always ahve a big flat screen with lines and they always just throw them or just leave it laying around unused

[@wintermoot3298]

Been looking for a fix for my tv for a while. Was about to give up and replace it. Good as new now. Thanks a lot!

[@FrugalRepair]

Congratulations! That’s great to hear.

[@camokid95]

This actually worked for me! Thank you! I had a single pixel-length black horizontal line a third way down from the top of my Samsung TV, that faded as it went from left to right. After placing a mm of electrical tape on the 15th trace on the ribbon connected to the TCON board, it got rid of it. The only complication like you mentioned at 7:20, I have faint lines from top to bottom accross my TV, but they're barely noticeable unless I am standing 3 feet or closer.

[@FrugalRepair]

Congrats! That's great.

[@therealeffingdeal]

Hey Cam. How did you narrow it down to the 15th trace?

[@camokid95]

@@therealeffingdeal A lot of trial and error. I just kept blocking 2 traces at a time until I noticed a difference on the screen.

[@therealeffingdeal]

@@camokid95 im working on a QLED with a single line across the screen. I don't want to block off half a dozen tracks and loose picture quality since I reason that is likely a single trace that's the issue. How does your picture look with your fix? Do you see any diminished picture quality in the trouble area?

[@camokid95]

@@therealeffingdeal It appears diminished, but not that noticeable from a distance. You should only block the trace relevant to the line that's a showing the dead pixels.

[@donovanpl]

Thanks for the explanation. I “fixed” mine a number of years ago and couldn’t understand why it worked.

[@FrugalRepair]

You used the blocking method on the row signals?

[@Ghosthuntert1]

Hey Rhys.. I have a question.. When you do a continuity test on the signal lines, cant that damage the sub pixels ? I am not sure what the average multimeter puts out for a continuity test or what voltage the sub pixels are running at so could the meter output cause secondary damage ?.

[@dr.monster9x]

I fixed my 4k panel as per your advice, thanks @frugalrepair. But on one side of screen, its dark. And there are light black horizontal lines there. Is there any fix for it?

[@FrugalRepair]

Great to hear. Congratulations. I’m not sure of your issue but if you have a row signal problem and the tape trick brought the image back, then you may be blocking too many lines or that may be the best the image can get.

[@baseplate1268]

Thank you for making this wonderful video that plainly explain how a LCD monitor works. I enjoyed watching both parts. I repaired a few monitors in the past simply by replacing components without fully understanding how the monitor performed the signal processing part. I guessed my luck ran out when I got a panel displayed everything in BGR instead of RGB while appeared to be intact. I have been stumped for awhile trying to look for known cases with similar issues, but I think I didn't even know how to ask the right questions. It's nice to finally know what to look for!

[@FrugalRepair]

Thanks!

[@lucgondim]

The most logical explanation on why does tape "fix" TCom board problem! :)

[@FrugalRepair]

The problem is actually on the LCD in most cases, not on the tcon.

[@lucgondim]

@@FrugalRepair Thanks!!

[@edpax14]

You're a legend! thanks for sharing your knowledge. Question: can you change a broken LCD panel from a different brand or model? Is that possible?

[@FrugalRepair]

Thanks! Yes you can replace an LCD on the TV, but the issue is that it has to match what the timing control board is outputting. That is, all of the signals must match on both sides.

[@VALIANT_Electronics]

Yes you can, you need to check that vcc is the same, also, if the screen has an lvds cable or ribbon cable you need to check if they are the same kind, for example there are screens that are milimetrical so they have only one ribbon cable to the tcon this cable had like 50 lvds line or more, also you need to check if the screen had the same ratio, you cant replace a 60hz screen with a 120hz screen unless you have a converter, also they need to be same size, inches are not standar for every screen, you can have two 42" screens but one can be 2 or 3 milimiter bigger. Sony is compatible with samsung and lg is with any chinese screen

[@joku8859]

Hi frugal Recently my 65" LG LCD 4Ktv lost color but i still had back light, So I was able to take it to the local TV repair shop he was able to restore picture n fix it but now I have some flickering and horizontal lines, which seem to be emanating from top right corner. Do you think I should try the tape or just replace the tcon panels entirely? I already went ahead and ordered the replacement parts 🥲tho im gonna ask repair to install them

[@trent4658]

Hi, I have been checking out your videos and thanks for sharing the quick diagnostic tips. I have an issue and still cannot locate the problem. My issue is the screen goes dark between 6-12 minutes with no noticeable lines on the screen and I have already tried swapping the t-con board. I went as far as outline the front screen off to check the LEDs and they function so I am starting to hit a wall and if you have any other suggestions I would love to hear them!

[@FrugalRepair]

Sounds heat related to me. Did you try turning the brightness down to 10% and see if it lasts longer? Or even put a fan on the vents of the tv to keep it cool?

[@trent4658]

@@FrugalRepair I have not but this will be the next attempt, ty for the reply!

[@cameroncalabrese7979]

Hi! This is great, I have a slightly different problem, I got a free 34” curved monitor from work because it has snow and horizontal lines, is there anything I can do? It was brand new out of the box like that. Ideas?

[@FrugalRepair]

Hopefully it is something really simple like a loose connection since it's a new device. I'd re-seat all of the connections starting with the ones to the main board and the screen. One time I bought returns (from a big box store) and the most expensive tv in the lot had a loose cable (after I opened it up). All I had to do was plug it back in correctly and I had basically a brand new tv that I paid very little for. Good luck!

[@cameroncalabrese7979]

@@FrugalRepair thank you! I have it apart and don’t see any bulging caps or loose connections. I am only through the first layer of boards (main, power and audio). Is snow only caused by loose connections or could there be something unfixable that is causing it?

[@VitorMadeira]

Fantastic video. Thank you and greetings from Portugal.

[@FrugalRepair]

Thanks!

[@late6812]

Was able to revive my 2018, 55in. Led, lg set with the tape method,but it's.not perfect, it's left a thin horizontal black line located 2 in.from the top. I'm 72 and shaky it's near impossible to see and hold an exacto razor knife steady while attempting to see and cut the tape. I suppose I should incorporate some.kind of steady-rest.i left the first set of 13 gold gold conductors taped over. Tried the illuminating process but failed each time when I would uncover each gold conductor. Do you have any suggestions? Thanks Cole from thomasville ga.

[@FrugalRepair]

Congratulations on the progress so far! Yes, it can be hard to see without a lot of magnification. I don’t know if this might help but you could alternatively cut the ribbon between each line and bend back each gold contact to find the one that is bad. Maybe you could take the ribbon cable to someone with a microscope and ask them to score between the contact points?

[@kingfrog36]

Your kung Foo is strong 💪. My respect gladly 💯.

[@FrugalRepair]

Thanks!

[@alexbaraffe8681]

Good afternoon, thanks a lot for your video. I have an LG Tv with TCon Board. I can see signals Clock 1 to Clock 8. But on some videos people have not apply tape on the 3 firsts ones. Why ? I was wondering that we have to block all the clocks signals like you ? In fact my question is more like : do we have to block all the Clock signals or only a part of them could be enough !? Thanks a lot for your answers !

[@joelbailey2950]

Really great information. I love technology and love fixing electronics. I will be watching more of your videos, thanks for making and sharing them!

[@FrugalRepair]

Thanks. That’s great that you like fixing electronics! What have you been working on lately?

[@joelbailey2950]

@@FrugalRepair My Vizio SmartTV has horizontal, fuzzy lines but it has a vertical roll as well. So this may not do the trick but I thought I'd try your trick with the tape (maybe need to block some of the Vertical connections as well?)..... I would take apart Halloween and Christmas decorations as a kid to get the motion sensor or lights to work again. Most of the time just taking connections apart and putting back together did the trick. And I fix cell phones here and there. But I love taking apart electronics to diagnose and fix them. I never knew how the pixels in an LCD worked, so cool to have someone explain it other than, "It's magic" (What my electronics engineering teacher told me about how radio signals work). Needless to say, I did not care for that teacher. Thanks again

[@aimanrulez7339]

Thank you soooo much!!!!!! Tried this on my second attempt and boom two faint horizontal lines gone subscribed!

[@FrugalRepair]

Awesome, congrats! Thanks for the sub!

[@wetytbub]

Good job!Looking forward to a video, where you talk also about vertical lines issues and possible fixes.

[@FrugalRepair]

Thanks! I do have a TV that has vertical lines so maybe I will make a video sometime. Great suggestion. The jerry rig solution many times for that is to put non-conductive material on top of one of the electrical connections and force it down by screwing the frame down on it to create pressure on it.

[@rachelirosh6237]

@@FrugalRepair i have a vertical lines can you please make a video??

[@thetanseyfamily]

Fascinating! So well explained, I loved it and explained it to my wife after I'd fixed our TV with tape. Thsnk you!

[@FrugalRepair]

Thanks for watching!

[@kenneth5034]

I definitely just started covering and uncovering lines on the board until i got a good picture and it worked lol 😂 thanks ! Merry Christmas!

[@FrugalRepair]

Congratulations! Merry Christmas to you.

[@biggiss5577]

Hello great video, but can it be repaired with a new ribbons or a new t con board?

[@monkehp]

Expectation: 'How to fix a dead TV with a single piece of tape' Reality: Most complicated video I've ever seen jejeje. 10/10 video, will try when I have some time to kill

[@FrugalRepair]

LOL, thanks!

[@edwardhernandez442]

Son of a gun it worked ! U just pimped my tv repair game up another level 😎

[@FrugalRepair]

Congratulations! Thanks for letting us know.

[@abeleski]

HI @FrugalRepair. Thank you for answering my question on your part 1 video. I have another :) How did you correlate the pcb labelling for the clock lines to what pins they are on the cable? Example, which pin is STVP? And then there is the rest of the CKV lines. The one I am looking at trying to fix I also see the labes printed on the circuit board but how does that tell me what pins they are on the connector? Hope I make sense. Thanks again

[@FrugalRepair]

I’m not sure how to tell you exactly, but you should be able to see the traces grouped together, that’s a clue. Usually they are printed really close to the trace. You can also do a continuity test from a test point (if labeled) to the pin

[@Danny_Giraldo]

Is it possible for both sides right and left ribbons to have a short circuit problem? In that case how should we go about trying to figure out which leads to block off with the tape? Any help and info is much appreciated.

[@FrugalRepair]

The row signal is shared across both sides, if it's the problem then it will likely show up more on one side. If you get the same symptoms on both sides then I would next suspect a problem on the tcon board.

[@leopanthera6895]

Hi Reese. Thanks for sharing such valuable insights with us! I have an issue with my LCD where I see horizontal waves. They're moving continuously from bottom to top and are particularly noticeable with dark backgrounds. Do you have an idea of what the issue might be?

[@FrugalRepair]

I’d try the diagnosis in these videos. You’d want to isolate if the issue is in the lcd panel or on the tcon

[@julianneestrada6239]

What all tools did you use? What did you cut the tape with that tool was neat. Is there a certain kind of multimeter I should get?

[@olivermarks2573]

My lines are horizontal and they happened randomly I’m so scared

[@pabloatsm6801]

same thing happened to me what did you do ??

[@tonyobasi3403]

Good job and thanks for the explanation. I have a 32 inch toshiba led tv. It shows picture on the upper Side of the screen and tiny coloured lines on the down. Any ideas on what to do?

[@FrugalRepair]

Sounds like the lcd panel is cracked. If so, you won’t be able to repair it unfortunately.

[@stefantraiteur9763]

Hi, thanks for the video. I managed to get rid of the horizontal lines. I got down to just 1 line and now the tv has no more lines but on the damaged side the color is really faded… any idea why? Should I leave all 8 lines covered? Thanks Keep up the good work

[@FrugalRepair]

If you watch both part 1 and 2 I try my best at explaining why there are faded colors. I would try to leave the least amount blocked as possible.

[@gabrielconstantine7384]

Hi Reese, I have a smaller 32" LG tv that has vertical lines along with an impact point. I took the back off and pulled out all the ribbons and re-inserted them firmly, as well as checked for bad grounds. Lines and impact point still there and no picture. Looks like the screen might need replacing. What do you think, internal damage? Thanks.

[@FrugalRepair]

If the screen is cracked, unfortunately, you can’t do anything about it. You can install a new screen but the problem is you can’t buy them anywhere.

[@williamguildner7988]

I have a tv , I turned over and laid flat against the cable box; trying to find an input jack. When I set the tv back up, all I have is vertical rainbow colored lines through out the entire picture. The cable guy says the screen is broken and they can’t diagnose the cable problem without a properly functioning tv. Did I break my tv beyond repair? Is it worth repairing if that is possible? Great channel for all kinds of cool stuff.

[@FrugalRepair]

Thanks! It sounds like the lcd is broken but it’s possible a cable came loose. Try gently twisting the tv corners while it’s running. I don’t believe the cable guy personally because he should be able to figure it out. You would still have sound, at he can work with that at the least.

[@paulbickerdike6281]

I have just started out doing electronics to keep busy in lockdown. I had a LG 55la620 tv that didn't remove the previous picture immediately and seems to hold the charge in the screens capacitor. I replaced the t-con board but this hasn't made any difference. Is this repairable on the screen buffer boards or is it just the screen is no good.

[@ChristopherFiola]

Thanks for the hack! This did fix an horizontal line I had on my 4k TV. Only issue is afterwards I get some faint horizontal lines across but not very noticeable. For the tape I winged it and guessed right by trial and error and it seemed to do the trick!

[@FrugalRepair]

Awesome! Congrats.

[@sunilashok2902]

First I would like to thank you for the simple and excellent explanation.I have a Panasonic Fhd tv which started showing the horizontal lines. I opened it and found the t con board which was surprisingly an lg board ,identified that the left half was the reason for the horizontal lines and the tape actually fixed it. I have a question though where actually is the problem,is it the led panel or the t con board ?

[@richfish101]

Brilliant 2 videos, I used the method and fixed horizontal lines and flickering image, but I have lost the red signal to half of the screen, will have to adjust size of tape now by trial and error 😕

[@FrugalRepair]

Thanks! Hope you can figure it out.

[@michaeltjin679]

hi frugal repair ...i have a viewsonic pc monitor /touchscreen...when startup...i have a green screen at the background ..when it really warmups is normal screen ,but then i get horizontal lines but shaking( not stir)....does it apply the same principal or is that another issue?..

[@learningstock4783]

Brilliant video. Perfect way to get technology translated into a understandable & simple way. Excellent indeed !!

[@FrugalRepair]

Thank you for your kind words!

[@urbanwarrior9103]

Thanks for this video, it worked and was quite easy to do. You saved me a new TV at over €1000! One question though, I now have a horizontal single black line that pulses on and off for a few seconds at a time. Since its only one line I can live with it, no problem, but was wondering why and if it is repairable. Thanks again

[@FrugalRepair]

Congratulations on the repair. Not sure about the line, likely it’s part of the internal lcd issue your screen is having. You might be able to minimize it with blocking a different row signal. But if you’ve tried all of the combinations then that may be the best you can get.

[@Rakesh-os7bl]

Thank you for the video! My Sony Bravia has a double image issue. The T-Con board has only one FFC cable. Thinking of blocking the lines with a tape, would it work? What are the possible long-term issues? Also, how long would this tape method work, can I have a decent picture for 3 months?

[@angien168]

I had a power issue at my house. When I turn my Sony TV on it had double images. Then the next day it started flickering. Tried the tape and it worked. TV looks great again. Thanks

[@FrugalRepair]

Congratulations on the repair!

[@Nodiddyayochill]

Did you open the tv??? Mine is 65” and on the wall and I couldn’t watch this full video he’s doing too much of explanation

[@jpithois]

thanks so much for all the explanations. just wondering : would a motherboard change solved the problem too ?

[@FrugalRepair]

No, because the problem is inside the lcd assembly