Why LCD is not displaying?

In LCD TV panels VGH,VGL,AVDD,VCOM,voltage dropping problem is very common. cause LCD is not displaying.
Why and how is this problem seen? Here are 5 main reasons glimpsed.
Video related to these problem and solution are here
Big size panel repair • Big Size Panel Repair
COF connection in LCD screen • COF Connection in LCD ...
Fix LCD Screen by Replacing Scalar IC • Fix LCD Screen by Repl...
#ledtvrepair #panelrepair #vcorelc

[@Kgtoons2003]

You are the best teacher and best explainer of led tv fault

[@alexdsouza8681]

You are very good n honest person who Sincierly ,share knowledge 🎀God bless u ,,There are many other guys share Half - n blackmail u to register ,for their training classes ,v bad.

[@dogma2030]

Este video es oro puro muchas gracias sigan adelante🙏🙏🙏🙏

[@VcoreLC]

Gracias amigo por tu encantador comentario 🙏

[@noisedotselectronics7099]

Ur every videos r useful for all technicians tq sir By.. NOISE AND DOTS ELECTRONICS

[@venusselvarajcnp580]

Good information for Technicians, Thank U Very much 👍👌

[@sanjayperane6925]

Genius Sir 👍👍👍 My led problem is all voltages are ok in power supply or motherboard, no any over heating,no standby ,set dead !

[@avr.electronicpoint.5575]

First You are best director & photographer. then u r good technician.🙏🙏🙏

[@lewisnjovu7957]

What type of magnifine where you using sir the work done is perfect

[@anshulkumar7322]

Very good sir keep it up I like all your videos ..........in future make more videos and increase our knowledge day by day......

[@VcoreLC]

I will try my best

[@jmtorres6710]

Very good video. Simple and on point.

[@sohelahmedpolash4044]

Please add audio and description slowly thanks

[@edtechph5444]

Watching ED TECH PH

[@ELXT93]

Andito karin pala sir ED TECH PH 😊😊

[@ronelugalino8152]

Thnkz for sharing sir..

[@simonmagadansilvaiii5735]

wow si idol ed palagi ako nanonood ng vlog dami ako natutunan sayu...self study lang ako using your yt channel

[@anillokhande8098]

Good video and good information. I like your new video. Thanks sir.

[@VcoreLC]

Thanks for liking Anil

[@g-teche-tech7004]

Loving your videos, if I understand this tracks correctly, VGL and vgh goes to the cofs directly. What if the ckv tracks, please do the video of the ckv tracks

[@santososantos8186]

Lebih kuat tv tabung💪...lebih gampang tv tabung....tv LED mahal tapi tidak kuat...tv LED no strong..tv LED tv manja 👎

[@nasarvalli4064]

Super solution & reason Thanq bro.

[@nalinsaminda]

Very good explanation.. You are doing Good job...Thanks for sharing ❤️👍

[@VcoreLC]

Thank you Brother

[@SHTFFuel]

Good explain sir....this example for all technician.Nice!

[@danieladani1771]

gracias men muestras mucha informacion valiosa

[@RaakiChannel]

Good, currently very rare technician are available like you, best wishes

[@edgardodasmarinas8596]

Thanks for your amazing video,sir what about voff it becomes high in on switch and it latter goes down the voltage, what is the possible cause??? Thanks and more power to you

[@ramv9589]

You got rectified that issue? I'm also having same issue

[@IrfanKhan-qt7rs]

Very good explain sir Thanks for sharing knowledge sir

[@deejeydaev]

You guys are awesome

[@NaveenYadav-ke8pn]

Very nice information.

[@jahabarsadiq3227]

Wonderful explaination!!!

[@KrishanKumar-hv8fu]

Very Informative

[@dilipkamti5864]

Excellent ❤️❤️👌

[@alexgfds294]

Thanks, BELARUS.

[@romsuave7019]

great technician

[@DumDumPaww]

i have problem with lg 20mp48a, i cant make sure the ic or the capasitor was the problem, but in the sw5099 getting hot when i turn on the monitor

[@stanleydsouza6723]

Many Thanks for this details. As it helps a lot of people globally..Amazing to see nicely made video

[@alaminelectronic7368]

ভাইয়া আপনার কাজটি অনেক সুন্দর হয়েছে

[@Fardeenfarwest]

Very interesting video I ever seen on youtube. About drop voltage ⚡.Vgh vgl. Well explained. And very short video but very useful tips. Carry on guys for your great works. Thumbs 👆

[@VcoreLC]

Thank you Fardeen

[@arieldelacruz-y9d]

very informative..

[@planb4035]

Thanks for your time and efforts to share your expert knowledge. Your technique seems working sometimes and fair enough but VGH voltage is not an alternating pulse but a constant 30V DC voltage and likewise VGL is a constant -9V DC voltage and not an alternating pulse. So my question is, why connect constant DC voltages to LC1 and LC2 which supposed to work but with alternating PWM signals, in this case pulsating 30V to -9V DC voltages with 3s duty cycle from the level shifter chip? And secondly, how does by passing the level shifter chip LC1 and LC2 PWM signals solve the problem, if it's caused but by the faulty gate electronics in the glass panel and not by the level shifter chip on the driver or source board?

[@adeolaadebayo9135]

Very educating good joy 🤩 bro Pls how can we have one on one questions , pls i need to know more Thanks 🤩

[@VaibhavPatil-hl1eh]

👌👌👌👌👌💐💐💐💐💐 Thanks for technical support

[@rubyelectronicslab6320]

Good

[@asrafshaikh6637]

Super definition ❤️👍

[@gmani66]

Good explanation, congrats sir, Which microscope use sir?

[@lelandtv6422]

Shout out boss from Philippines it's new friend

[@Repiar.electronic.fix.2966]

I in Cambodia like view video letters i understand very much thank you ខ្ញុំចូលចិត្តវីដេអូរបស់អ្នកការបង្ហាញអក្សរខ្ញុំយល់បានច្រើន

[@johnjeronepenaflor7081]

Hi can you help me vgh and vgl no voltage or drop voltage newbie tech and still learning about led TV.. it only shows the logo for a minute then it will auto turn off ... Custer said he try to clean the screen with alcohol maybe there where some spoil goose to the panel... Haven't open the panel yet seems backlight is good since it's lighting up for a minute..thanks

[@staltabzch]

Very good👍

[@nirav1473]

Good explain..thank u..😊

[@VcoreLC]

Welcome 😊

[@santhakumarkarur]

Great job thanks for shareing

[@sababasharat8657]

The Android TV kit turns off the TV due to overheating. Explain the reason

[@TeReSaAsErEhT]

If there's backlight problem?

[@naadiwijaya4237]

good.....

[@hermannehon468]

Excellent 👌

[@orsoelectrons]

Nice sir....i wish to visit me orso electrons..

[@zibobpompon5768]

Très clair et bien expliqué !!!

[@yuvsharma]

Awesome video... Really fascinated by video presentation

[@VcoreLC]

Thank you! Cheers!

[@daniellopez1149]

hello, could you send me the data of your microscope, thanks

[@JannatiMoni-w4x]

Jones Anthony Martin Ruth Hernandez Kevin

[@damiropadobarglumskiperiod505]

Can you help me.vestel led 32 inch picture is green at first than slowly turns in to white n the midle green (left) white(in the midle) and green on the right all verticaly .all voltages are present 29v15v7.5v 0,6v

[@VcoreLC]

Damir, check voltage on gate COF

[@ДомовойЛеший]

отлично!

[@rishichawda5988]

Hi, where can I buy 50inch 4k panel?

[@albertfarias79]

Hola cuando se calienta demasiado el circuito de gama a que se debe no tengo imagen gracias

[@HaMat-pk6kh]

Thank you

[@bilalkhan-zk9hw]

Sharp led panel bm9098 clock ic heat no disply plzzzzz help

[@LEXUANCUONGTV]

Rất hay ❤️👍

[@harshabandaru8878]

Very good information for me thank you very much.

[@VcoreLC]

Glad it was useful

[@RajeshKumar-hc3bh]

Shandar video sir

[@louf7178]

1:39 Windex syndrome (glass cleaner)

[@roseelectronics4582]

Great video! A compilation of nasty, complicated issues that requires the touch of a genius to resolve. I love your meticulous workplace and neat presentation. Do you provide training? If so, I'd like to visit you if the world gets better.

[@VcoreLC]

I'm grateful for your kind words.😇 Let's hope the condition will get better soon.

[@rameshvandhnani8960]

SO BEAUTIFUL VIDEO AND V GOOD EXPLANATION.AMAZING RESULT. Thank you so much.

[@sajjadmirzaee17]

There is a Daewoo TV with Slack that works without any problems. The image suddenly turns black after an hour of work, and dotted lines appear on page 3 of several times. Some cases reset and continue in two parts, some cases are off-key but some cases are on-key but not the image. There are two modes of the green light, which indicates that the TV is on. In the last two cases, we have to disconnect the two electrical outlets and then turn on the electricity to return to normal. please help There are several Daewoo TVs that have this problem This model is 42F 4100

[@simojtr]

Good Job

[@ramv9589]

In my Onida tv after power on V ON is going down from 16v to 98mV , all remaining voltages are stable, capacitor looks good. Now how can I check issues?

[@syamp44]

Very yousfull video thanks

[@umeshgawde6954]

Very nicely explain thank you

[@VcoreLC]

So nice of you

[@rizalchannel8322]

If the VGL voltage is empty, what should I replace the 24 inch Polytron TV?

[@josearmandosanchezvaldez6624]

excelente informacion de este -ic-dc/dc y sus voltajes y causas de falla en lcd...

[@VcoreLC]

Gracias amigos

[@rcdominicelectrolab9753]

Thank you master

[@harikishanahirwarindianrai4910]

Superb

[@rachtech-rachidlagraoui7806]

Great video THANK YOU SO MUCH

[@zainberge8880]

Very useful 👏👏👏,hope you keep uploading very informative videos for all and most specially for all aspiring technician.

[@bunderantehnik87]

Top lanjut bos

[@thirunahariprabhakar6560]

Musical instruments and secure app

[@sunilverma3149]

Very nice 👌👍 And thanks ☺️

[@ravikm4473]

Exlant work.

[@Swenser]

I have Avdd 7.4v only. Should be 15v. What is usual cause of AVdd low problem?

[@VcoreLC]

AVDD switching mosfet/Capacitors/ IC

[@Swenser]

@@VcoreLC thanks. After injecting 15v voltage onto Avdd there was different affect on the screen then cof started smoking. Too bad. Another tv in the rubbish.

[@divineeyambe653]

What so educative,it has help me to have many techniques now in Solving no display on a TV

[@alexfreak7249]

The connections and bypass does not show a professionalism, could it cause a short circuit. Is there another method to use to looks better aesthetically?

[@yukihironichan]

I've watch many LCD video tutorials on how to solve this kind of problem but nothing mentioned about COF being replace guess they don't have the machine that you have to do the right job amazing.

[@alaazahlawi1215]

Thank you very much.. What did you use to clean the cof? What’s the material please

[@default19in]

Wow tx so much for sharing this knowledge.

[@vipalsharma4120]

Very good way to explain,vvv thanks full you 🙏

[@BernardoMelendres]

Sir may sharp po aqo na 40plus wala pong naka lagay na vgh at vgl sa panel nya pano po malalaman qong san po nakalagay ung vgh at vgl salamat po

[@Ledihatv]

Number one information for new beginner in led tv field

[@sharmahitesh2299]

Very important usefull information👌👌👌👌👌👌

[@vicdivdeo84]

What's your Cleaning liquid name

[@VcoreLC]

ACF Remover & Acetone

[@divineeyambe653]

Watching from Cameroon, Africa, this has helped me to learn more

[@shamshadkhanshamshadkhan3186]

Yyy

[@shamshadkhanshamshadkhan3186]

Yas

[@dawitabate8187]

what about LED panel?

[@nandimithraabeysinghe4106]

Thank you Excellent .

[@desfianurchannel7706]

Mantap

[@rubincelestin5998]

Give me the number panel?

[@sureshrahavan2322]

👌👍🙏🙏