Led TV Repair ep2 Has sound but no picture

This is my 2nd attempt at fixing my LG 47ln5400 TV. The first repair lasted about a week and might have lasted longer if I would have turned the back light setting down. The end result is removing the bad leds and just soldering the + and - connections together to complete the circuit on the led strip since the leds are in a series. Then I just turned down the back light brightness to a lower setting to help prevent more leds from burning out. If a problems occurs Ill update as needed.
TV still working and on the wall as of 8/4/2017 :)
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[@azioprism3635]

Thank you so much for uploading this video, you basically repaired my LG smart tv by uploading this, mine went black 6 days ago. You are a true GOD! ;)

[@AveRage_Joe]

Thanks, Im glad it helped

[@thejuanmanarmy794]

thanx man you practecly showed me how to fix lcd tvs without wasting money on new parts

[@AveRage_Joe]

I am glad it helped

[@jayprakashshrimali]

i change led as per you say and tv is working very well for 1 or 2 day but after this ..its burnt again and again and replace it 3 times and again burnt so ..i am tired now ..what to do ??

[@blogvlogann7316]

hmmm... watching this gave me the idea how much shld i pay for repair. thanks for the video.

[@raguram5118]

Hi Sir i am in india your video is very useful please keep it up. And one request, please upload the how to replace LED TV Universal mother board We're waiting for your your new videos Thanks a lot

[@ricardodavila5223]

no dura mucho tiempo,, se funden de nuevo eres muy ingenioso te recomiendo ya que hiciste lo mas dificil cambiar los modulos leds gracias

[@TheBillythekid2010]

nice breakdown and back together vid... I always end up with a screw or two after assembling something like that, Lol. Thanks for showing :)

[@AveRage_Joe]

+TheBillytheJack2010 Thanks, Ya I can find a few left over screws from time to time. I figure Id put the video up to show some things I tried and what worked and what didnt work so maybe someone can try to fix there own.

[@skytvod]

Hi there, yes it is a good idea to turn your backlights down because this is the bias voltage to those LEDS. The hotter they run the less lifetime they have

[@jacquie.ec.2012]

We have the same LG TV size and the bulbs have burned out twice already (got the TV in 2013 and the first burnout was in 2015, then again this year). We had a guy come to our house to fix it and it cost us about $200 repair each time. Don't know how long this next repair will last.

[@AveRage_Joe]

To help it last longer, lower the back light settings in the tv menu settings.

[@jacquie.ec.2012]

Thanks, will do that.

[@nourelectronique4819]

Very good

[@prajithkarumathil]

An outstanding tutorial..... big thanks to u.. I'm facing same problem with my LG TV. LG technician came here said repair cost would be almost 80% of the TV price. Can u pls let me know what is the type of LED light I need to buy ? what is the tool u used for checking those LED, Is that multimeter? It's all LG TV which has problem here. If anyone from LG read the comments here, they'll feel ashamed of their LED product. Guyz, pls do not buy LG LED tv.....

[@AveRage_Joe]

Prajith K Thanks, I think there is a comment a few down that a guy has posted the leds.

[@docgaurino589]

You should have show how it works after assembled everything, l mean you should have test it and show to viewers.

[@vaasmontegro5795]

my model is LG LED LN5110 32 inch tv and the problem is same can you tell me what is the estimated cost

[@usnationalist]

If so many of the lights were working, why was the screen completely dark? Are they in a series like old Christmas lights or something?

[@AveRage_Joe]

Yes they are in series!

[@RussellBooth1977]

I think you started to blow the diodes you replaced because there is a Lack of heat transfer between the LED & copper strip which I believe that acts as a heatsink as well as a conductor,at least in the LG television sets,one that I'm working on now. I was thinking about soldering a standard led in,but then I heard of the trouble you have been having with that. The LG unit I pulled apart last night has 7 LEDs on each strip & 3 strips in total which equals 21 LEDs connected in series which are rated at 6 volts each in an LG unit. That means a total of 126 volts DC is needed to run the diodes,I got between 125 - 130 volts dc out of the power board so that was o.k. I found that 2 of the 3 strips were o.k. when connected to 24 volts DC. The other strip didn't light up so I removed all of the diffusers to test the LEDs with my multimeter & selected the diode test setting. 5 of the LEDs had a 0.7 volt drop across them (o.k.) whereas 2 of them were at zero volts (open circuited). So,I will order some 6 volt surface mount LEDs from China for the unit then solder them into position !!!!

[@AveRage_Joe]

Yeah this is all I could do at the time. If more leds go out I will replace them with the surface mount leds because I have a couple of led strips from another tv. Will post a vid if and or when it happens and update the description box.

[@jeffescortlx]

Russell Booth No, his replacement LEDs burned out because he used run of the mill 5mm leds. That for all we know is rated for 20mA. The TV led driver board is going to regulate current, so it could be targeting 200mA. Of course the leds are going to fail. Also, doesn't matter what resistor you put in series with it because the power supply regulates current, so it's going to ramp up the voltage until it gets to desired current. If it was a thermal problem it would work for a short while, but he said it burned out immediately.

[@AveRage_Joe]

+jeffescortlx Yes Sir!

[@anujparashar6528]

Sir, lg led 32 inch ki back light ka kya price hai.

[@muralidasb8504]

Hi Joe, Your video was very helpful. I could fix my LG LED TV after watching this. Thanks a lot.

[@AveRage_Joe]

I am glad to see it has helped, mine is still up on the wall after making this video.

[@johnsnyder9033]

Why are the leds connected in series. Thought we did away with this with Christmas Lights. Unless the voltage drop causes too much strain in the circuit parallel connections should work fine.

[@santoshkumaryadav648]

I have some issue in my lg tv, some 2 lights are visible in the screen always, can you please tell me how to solve it. thank you

[@AveRage_Joe]

Are they little tiny dots?

[@santoshkumaryadav648]

AveRage Joe yes, tiny dots

[@santoshkumaryadav648]

AveRage Joe I think 2 LEDs are glowing always

[@AveRage_Joe]

Santoshkumar Yadav If they are really tiny like a pin head and white then your LED screen has a few dead pixels. Those cant be fixed.

[@medmind6075]

Hi what will happen if i remove all my lcd tubes and place leds which is powered from outside source ? Please reply

[@AveRage_Joe]

That may work! Havent tried but could work in a pinch!

[@sumindaranatunga7930]

Thanks for the video. A few led diodes burnt in my LED tv. I don't have old strip to get diodes. Please let me know how to find correct type when ordering online. Forward Current, Watt, LM etc. Thank you

[@AveRage_Joe]

+Lindara Ranatunga I actually dont remember as I did this a year ago. Joe

[@ketandalwala5318]

Contact 8530836399

[@robertm1371]

good job but you should use smd led like the original,you can find on Ali express or e bay.most used diode is lg led 3528, its 3.2v but that doesn't mean is the right diode for every tv .I don't recommend to short + - that mean more voltage for other led's.trust me i have replaced more than 300 diodes by now

[@AveRage_Joe]

Robert M Yeah I agree, I just used what I had avaliable at the time. Thats another reason why I turned the backlight down. If the tv goes out again Ill replace the bad with new.

[@pushkarpahuja8309]

Sir plz tell me cost for this

[@Iahusha777Iahuah]

To test mine I plugged in TV and turned it on with the screen off and LEDs exposed and you can see it flash before auto shutdown , I could see 3 whole strips dead. Then I plugged in the L1 & L2 strips and they lit up and all stayed on so through process of elimination I found that the R1 and R2 strips were the bad ones, after I bridged (+ & - ) together all the strips turned on and I could see the rest of the individual broken LEDs. I soldered all of them and It still works, I thought a short circuit would heat up but I guess not if it is a specific voltage limit, it is also DC. I then thought if I did not bridge it or short circuit it, then the remaining LEDs could have more voltage forced through it and burn them out faster. well just keeping brightness lower for moment.

[@Iahusha777Iahuah]

I think I connect a full strip with one partial strip the L side so all would work (when enough are burnt out the TV has an auto disconnect, I think when it is more than 3 or 4 , so since I eliminated on bad strip I could see which specific ones were out, and I did bridge them because if I did not then the 3 or 4 bad LED limit is passed and it shuts the whole thing down. Who ever left this thing on the side of the road must have the brightness cranked for years, really unnecessary if watching TV at night. I think the vivid setting cranks brightness up, also sidenote; there is a brightness setting and a backlight level setting which are seperate.

[@AveRage_Joe]

Awesome, glad you got it going.

[@lordspears358]

I just thought , is it possible to, let’s say “turn” an edge led to a backlight?

[@MrNams]

Are these LED same what we get in market.

[@furkanelgun16]

I have 43 inch (106cm) LG TV. What is the average price of the led panel for my TV?

[@AveRage_Joe]

The actual screens are expensive, I would just replace the tv unless you find another of the same tv that had a bad board and swap parts.

[@oscarchin1973]

I got a LG LED smart tv. The screen has picture but there is extra two light bulb on the screen when the tv was on.

[@oscarchin1973]

What's wrong with it? How to repair it?

[@AveRage_Joe]

Im not really sure what you mean by 2 extra light bulbs on the screen?

[@dreartand]

It´s just two diffusers got fall , open the panel and you can figure out. Watch out because are difficult to adjust and a little touch can fall the others. Hope you understand because my broken English.

[@prosperjapheth691]

Pleas can you do a video for showing the pictures after applying this repairs? And solo can u show a video please on how to solder the +/- together? Because what am thinking is that when u do solder both together is bridging can you clarify me on this pls..

[@AveRage_Joe]

I just recently had another Led burn out and I took the tv apart to replace the burned out leds and when I was reassembling the Tv I cracked a small piece of glass on the corner of the screen 😱so now there is a big black line on one side of the screen😞 . But yes, you are correct, I just bridged the connections with solder where I had removed the Leds!

[@gautamkamble7890]

Sir I have same problem who many fees to repair my tv

[@voltron979]

That was a great video man!!! Thanks for it!

[@AveRage_Joe]

+Daniel Vazquez You Bet😃🖒

[@MarioMorales925]

Great video ...you know I don't have a TV like that, but It really was amazing to see how you fix yours.

[@AveRage_Joe]

Mario Morales Thanks!!! I really love to take things apart to see whats inside then fix what I can. :)

[@ashokkummar427]

How much does the whole kit costs?

[@sachisachi4168]

How much the total led set of bulb cost?for 32 inch

[@AveRage_Joe]

Im not sure, I would check ebay. They are usually pretty cheap there!

[@sachisachi4168]

Please check it for me

[@rodolfopirela2654]

Good morning friend, I have a television that has the same fault, uncover it and I could see that I had a led burned in the bottom line, my question and my problems is the following, when replacing the burned led all turn on individually, I can do so that all the led on the bottom line turn all on

[@nicolaallende502]

I have a vizio. manufactured in 2015 so it seems different than the lg you fixed . I took it apart clearly not knowing what the hell I'm doing . don't have a flashlight to do the test but when commercials come on the screen will get a bit brighter and it has audio. Can you help me out on how to fix it please!!!

[@AveRage_Joe]

You would need to test the leds if you can.

[@Xiollele]

that is some really hard work, good job

[@AveRage_Joe]

+Xiollele Roccxibú Thanks!🖒

[@kevinglidden3734]

Since you basically eliminated the leds that weren't working can you tell that they aren't there when watching?

[@AveRage_Joe]

Kevin Glidden Only on a all white screen but not during regular watching.

[@AveRage_Joe]

Kevin Glidden Thats also because my tv had 2 that were closer together

[@mentuemhet]

I need Help ASAP. Those 3 or something LEDs that didn't turn on, were they burnt? I'm using my good old eye and flashlight to spot bad LEDs. Is that enough? I only spotted 1 bad one. The rest are OK and don't show any defective signs under the clear plastic things on top of them. I'm asking because I don't want to spend like $80 bucks on the whole set, I only need one LED strip. I guess? Also, because I don't want to get electrocuted by testing them.

[@AveRage_Joe]

yeah i had a few that were burnt out. one bad led can make them all not work. if thats all you need is one strip then thats great.

[@mentuemhet]

Thanks.

[@Iahusha777Iahuah]

To test mine I plugged in TV and turned it on with the screen off and LEDs exposed and you can see it flash before auto shutdown , I could see 3 whole strips dead. Then I plugged in the L1 & L2 strips and they lit up and all stayed on so through process of elimination I found that the R1 and R2 strips were the bad ones, after I bridged (+ & - ) together all the strips turned on and I could see the rest of the individual broken LEDs. I soldered all of them and It still works, I thought a short circuit would heat up but I guess not if it is a specific voltage limit, it is also DC. I then thought if I did not bridge it or short circuit it, then the remaining LEDs could have more voltage forced through it and burn them out faster. well just keeping brightness lower for moment.

[@mentuemhet]

Kevin Cyr thanks, but I already fixed it a long time ago with just using a magnified lens and seeing for any burnt LEDs. it worked for me ☺

[@Iahusha777Iahuah]

some of mine that didnt work had no visible sign

[@vigneshthayanithi8555]

Hi joe, Great work thanks a lot for given me a good knowledge in tv backlights. I have a questions. How much it will take to repair this kind of issues. How much cost for the one led for 50inch tv.

[@AveRage_Joe]

The individual led's are super cheap but you could get a hole strip for maybe $20 on ebay or amazon!

[@vigneshthayanithi8555]

@@AveRage_Joe Thanks a lot joe, really its useful for me☺️☺️👍

[@ciklontm]

Absolutely non-serious repair - installation of an LED with different current compared to the original 3528. :)

[@rez4405]

This is very good at what he dose

[@pratikdominator87]

Hi, good work... I have same issue... Repairer said , he will change whole strip then issue will be resolved... He will be charging around 100$ , TV cost is 470$... I think he can change light like u and it will work fine no need to change whole strip... What do you think is he over charging ??

[@AveRage_Joe]

Well there is a bit of work involved to tear down the whole tv and replace the leds and then getting the tv back together. I think $100 isnt bad at all!

[@pratikdominator87]

AveRage Joe , thanks for reply....

[@AveRage_Joe]

+Patil Pratik You Betcha!

[@MrKirbinio]

I got a led strip but its not the same is there some way to adapt it

[@AveRage_Joe]

You could probly just solder the strip in or remove the leds from the good led strip and solder them into place of the bad

[@tuanngnt]

Mine 49" LED TV got exactly problem like this; but I pass this man. You have to completely tear the TV down to fix the backlight LED.

[@AveRage_Joe]

Its not to bad of a tear down

[@BreadstixBreadstix]

here in the phils where's the service center for lg ln54 series with sounds but no picture is the problem

[@AveRage_Joe]

Maybe someone will comment that knows because I sure dont

[@Mrrp007]

Which colour of the LED i choose?? Multi or a single blue...???

[@AveRage_Joe]

They are white 👍

[@surindratv2754]

In my LG TV 45" both audio and video goes interrupted time and again. kindly suggest me how to set right. thank you.

[@rizogamers4915]

My LG LED tv has a sound but no picture. Even i push my home button no sign. Is it tcon board problem ?

[@AveRage_Joe]

Its usually a backlight problem. A led or 2 probly burnt out.

[@rizogamers4915]

AveRage Joe i see. before this i have backlight spot problem. So many off them. Like a pokadot. Still can watched tv. then the spot still even there when this new problem happen. Is it still backlight problem or tcon board. Sorry for my broken english.

[@rizogamers4915]

AveRage Joe i see. before this i have backlight spot problem. So many off them. Like a pokadot. Still can watched tv. then the spot still even there when this new problem happen. Is it still backlight problem or tcon board. Sorry for my broken english.

[@AveRage_Joe]

Yup no problem. I think you just had to many leds go out so the backlight just turns off. If you replace the led strip or bad leds, the tv should work like normal.

[@rizogamers4915]

AveRage Joe Thank you so much for answering all my question. It help me a lot. God bless you. Have a nice day.

[@alexis8015]

Hi i hav the same problem with my led lg tv, may i know what model and the inches of your lg tv?

[@brownee20007]

Hi there my JVC LED TV has no picture, there is sound. when I put off all the lights in the house, with total darkness I can see the menu on screen. faded but I am able to read. what could it be? Lights? or boards?

[@AveRage_Joe]

Most likely just some or one LED has gone bad like mine in the video

[@tumertech4609]

Does LED TV have backlights or only the LCD ones?

[@AveRage_Joe]

😆

[@robertmuna9390]

Hi i folloe those step but now the led light are on but no image and sound. Dont know if i made a mistake when putting everything back together or i did damage the mother board. Please help Thank

[@AveRage_Joe]

+Robert Muna If you did what I did then you couldnt of damaged the motherboard. I would say you forgot to insert a wire somewhere. I would take it back apart and check wiring.

[@robertmuna9390]

Ok thank

[@myvicariouslife4012]

I'm trying this during lockdown. Found a 55 inch last week before all hell broke loose so this will give me something to do. There are 11 led's per strip in my lg tv . Is there a way I can test a and b strips seperately with a 12 volt power supply? thanks

[@AveRage_Joe]

Yeah you can test the strips. There are test points on each strip, just hit them with your 12v power supply.

[@DrPhatMusic]

Got a 42LN5400, no backlight, and I'm about to do this... just find, bridge, and hope for the best! Paid $20 for the thing "pre-repair".........

[@AveRage_Joe]

Nice, Not bad of a price!!!

[@mariegriffiths]

I'm doing this repair now thanks, I have two cats to worry about. What is their name?

[@AveRage_Joe]

Good luck with the tv. There names are Beyonce and Horus!👍

[@mariegriffiths]

The repair worked thanks. I tried testing the strps with a 12v supply but there wasnt enough power. So I just put the new part in one of the 3 strips. 1in 3 chance and powered up the TV disassembled. I chanced on the right row first time and it is now fixed. People have winged about the colour temperatures of the LEDs being out on replacement but I do not see that problem at all. I had to remove cat fur from the LED that my cats had walked around during the job. They do their best help.

[@mariegriffiths]

BTW I bought my strip on line from a dealer in Portugal on eBay. All fine it was an orginal part.

[@AveRage_Joe]

Ok ya if the leds didnt power up then that was because one or more were burnt out. Glad the cats helped and the tv is working!!!😀👍

[@manaconda745]

What is the name that white backing under the screen

[@AveRage_Joe]

Maybe diffuser panel but not 100% sure.

[@memomemo2202]

thank you for your important videos . the resistance series or parlles with anew led؟

[@AveRage_Joe]

+Memo Memo Im not sure because I just soldered the + and - together to complete the circuit

[@jasephase2k933]

Hve recently bought a samsung led monitor image is bright when first switched on slightly dulls the main board is buzzing the square coper block in centre of board image shws slighty faded line every so often wt could be the fault as nt gt the tools cnt detect

[@AveRage_Joe]

is there any swollen capacitors, check the solder connections where you hear the buzzing

[@jasephase2k933]

Its the black block wt as coper wire in wts buzzing hvnt removed board as hvnt no solder iron

[@jasephase2k933]

Dulls re brightens dulls again nt continuers

[@jasephase2k933]

Is brilliant image for a cheap hd when is nt dulling

[@jasephase2k933]

Slightly showing faded image lines un focuses a bit when dulls

[@bukolaolaniyan676]

hi. i have a 55 inch lg tv which is also having the same issue. my question is if u simply patch the + / - as u did in yours, wont that area have a visible sign of lower illumination? or did your diffuser help even it all out. especially given that there were more than one bad led points.

[@AveRage_Joe]

Yes you are correct, it can have a darker spot if you have a few leds out in the same area like mine. You can only see when that part of the screen goes really bright white. Its not really noticeable during regular viewing. The diffuser does a pretty good job. So if you have 1 led you probly wouldnt notice much.

[@flankerzo]

you cant jsut connect + and - together, you need at last put resistor in place of led, do you know what led are used ? 5050smd ?

[@AveRage_Joe]

Thats what I did and it is still working great. Yes you could put a resistor in place of the led. As for the actual leds, they do look like a 5050smd

[@Sloxx701]

Just use diodes. Using off the shelf leds can be difficult and the brightness will be off or the new leds wont be bright enough to see through the diffuser anyway. Sometimes you can jump out the terminals and get it to work like you did, sometimes that may not work and will put the feedback circuit into shutdown. I just use whatever zener diodes I have on hand, this is usually 1N4148s which are easy to get anywhere.

[@AveRage_Joe]

Awesome, great idea!!!

[@Sloxx701]

yeah, its a bit easier than trying to source those leds or the led strips from a tv, and you can't really notice one or two leds out anyway. Also, I turn the backlight power down to keep the leds from dying as much. They like to set it to 100% from the factory which kills them.

[@madamada888]

If you don't mind a small darker area where the led was, which is only visible when one color is displayed, you can just short the burned led. I did this on my TV, as the driver is current limited. I think mine was limiting at 250 mA, and I had 3 which failed. It lasted for almost a year, when others started to fail, but I got new LED strips now.

[@AveRage_Joe]

Yup, thats pretty much what I did and its still on the wall and going strong

[@Browningate]

@Dacke I think that it's garbage quality control and cheap Led backlights that kills them.

[@fitzphillips5370]

Hello average Joe What resistor did you end up making it work?

[@AveRage_Joe]

+fitz phillips In the video I said that I removed the resistor and just soldered the + and - together where I removed the bad leds. Its still up on the wall and working great :)

[@fitzphillips5370]

You mean that you shorted on the PCB( -+) or did you mean that you eliminated the resistor and soldered the LED directly without a resistor?

[@AveRage_Joe]

Yes I shorted the (-+) on the pcb and eliminated the resistor and bad led. I also turned the backlight down to help prevent more leds going out since they will receive more voltage. Another suggestion from a viewer said you could solder in just a regular diode to simulate the load of the led and that would keep the other leds from getting to much voltage which I think is a great idea.

[@jonathanharris2090]

Mine does the same. When you turn it on it will flash only one time but I will get sound. A flashlight shows a picture.

[@AveRage_Joe]

Its not to bad of a repair.

[@jeanpaulzuluaga3490]

Por favor díganos de cuánto es la resistencia que le colocó a cada LED

[@MrAkshat1494]

I have got the same problem with my sony led 32 inch

[@Kashyapi_here]

Sir mera 43 inches intec led hai uska power on karte hai toh 2ya3 second kae liye display on hoti hai aur uskae baad display black ho jati hai kya led lights ka problem hai please help me sir thanks

[@AveRage_Joe]

Google translate didnt do a very good job of translating so Im not sure what you are asking.

[@SteelStrex]

Mine too, almost same model (42ln) no image but there's sound. So I tried with another T-Con board. With the new tcon the backlight works fine but no image on the lcd. Dont know what to do

[@nemesisnowviii4111]

Check all voltages from power supply first. If there are blinking LED codes decipher them.

[@maheshkalokhe5724]

Can i use super glue to stick cap over led in led tv?

[@AveRage_Joe]

Ya you sure can!

[@limm4576]

Hello, I have allmost the same tv LG 47LN5758. The problem you have seems the same like my tv. Question what is the best Ohm resistor value i have to buy? you used 100 Ohm and 330 ohm but it didn't work. So what is the best i can do? Lower as 100 Ohm? Or no Resistor at all and only new leds? I hope you can help my soon. Thanks greats

[@AveRage_Joe]

Lionel Mm at first i tried just a regular white led and it worked great for one week but they burned out because i didnt lower the backlighting. the best would be to just buy the smd5050 leds to replace the bad ones. right now my tv is still working great without those bad leds. hope this helps, if not let me know.

[@limm4576]

Your AveRage Joe, hello I was searching for " smd5050 " on www.aliexpress.com but what I just found was I little bigger than the ones in my TV. what was you're lg model. ?

[@limm4576]

oh and another colour more a little yellow? the one on the TV are more cool white...

[@AveRage_Joe]

Lionel Mm my model is in my comment section up above. ya the leds are white

[@limm4576]

hello, I'm gonna try to fix it. it's my first time. thanks for your help! greats

[@Freshleopk]

my led tv has same issue but all strips are fine i checked

[@AveRage_Joe]

Hard to say what is wrong.

[@ahsanmiah7159]

What TV model is your lg

[@AveRage_Joe]

Assan Miah Its a 47ln5400

[@int0x13]

Hello, Man why dont you show the final result at the end (the picture)? I bet you got an uneven backlight on the lines that you removed the LEDs. Do you see white point of bright at the place you removed the LEDs?

[@AveRage_Joe]

+Julien I could do a follow up video if that would interest people. Normal watching you dont see a difference however if the screen is really bright white you do see a darker area where the few leds are removed.

[@int0x13]

No it's ok, i just wanted to see the picture. Because i did the same repair on my client set and i got some white points (more visible on white or clear pictures) on the bands i've removed one led. I'm not sure what is the reason and i wondered if you have the same. But you said no.

[@AveRage_Joe]

+Julien Oh ok, yeah mine are more of a darker spot one the bright white screen. Did you turn the backlight down. I would say that since the leds are removed, it allows more voltage to the leds that are left. I would lower thw backlight setting. There is a comment on here were a person recommended putting a regular diode in place of the bad led to simulate load like an led.

[@jerickmasili9533]

Good day sir!...I am Jerick C. Masili I am asking permission to you as the owner of these video, because im going to use these video my research study and I’m asking for your approval. Thank you

[@AveRage_Joe]

Sure, What kind of research are you doing?

[@jerickmasili9533]

survey research sir, which is about perception of electronics technicians on video clips for flat screen TV repairs, and the video I'm going to used your video and I'm asking for your approval for legal purposes that you allow me to use your video for my research study.

[@jerickmasili9533]

Because I' m to use some your videos

[@AveRage_Joe]

+Jerick Masili what would this mean for me. Do you need to copy the video?

[@jerickmasili9533]

I HAVE ALREADY THE DOWNLOADED VIDEOS SIR .. AND ONLY NEED A MESSAGE OR LETTER FROM YOU WHICH IS, YOU SAY YES THAT YOU ALLOWED ME TO USE YOUR VIDEOS BECAUSE I NEED IT TO CONTINUE MY SURVIE RESARCH AND I AM A STUDENT SIR...AND YOUR NAME SIR WILL BE AKNOWLEDGE IN MY STUDY.

[@Hardtalkz]

Sir i have THOMSON 42PB130S5 Intuiva(2005), when i connect DVD, Sat receiver, USb etc i get audio perfectly, but the screen doesn't display anything not even light. technicians around me don't have any idea on how to go about it. could you help me sir. actually works fine except for the screen that remain black.

[@AveRage_Joe]

Does the screen have video at all or did it quit on everything. If video has stopped on everything then do the flashlight test to see if anything shows up on screen. If you can see picture with flashlight then that means your backlight has gone out. This could be the backlight inverter board is bad or one or more of the cfl bulbs are bad. There are a few videos on youtube that show you how to check the inverter board to find out if just the board is bad or a cfl is bad.

[@Hardtalkz]

no video at all. i just get the audio. the flash light test is negative as well

[@AveRage_Joe]

search on how to test main board

[@ramtamang6222]

Hard talks about

[@shrisaibangleandcosmeticsw3797]

Sir my 32" led tv automatic off after 20-25 minutes but sound is hear but picture not show like black screen. And then start again picture and sound see clear and after 20minut these problem repeate again.please solve the problem.

[@AveRage_Joe]

Probly a capacitor on one of the boards. Take the back off and take a look at them.

[@kennethlloyd8982]

Hey Jimmy. My name Kenneth. I have a 42" vizio tv model NO E470i-Ao when I turn it on the Light at the bottom comes on and then turn off. No Light on the screen and no sound. what must I do?

[@kennethlloyd8982]

I purchased a power supply board and a main board and I have the same problem.

[@AveRage_Joe]

Since you changed both boards Im not sure what the next step would be

[@garytulsaelectronicsrepair4681]

good job.

[@freshkrew123]

Had the same issue. Used the flashlight trick had a dim picture. Pulled everything off and checked the connection for LEDs. Now the bottom LED strip is blinking and other ones no lights. Please help?!?

[@AveRage_Joe]

+andrew blackwell All I did was remove the bad leds and solder those connections together. Beens working ever since🖒

[@freshkrew123]

AveRage Joe well it's in pieces. So step by step, LEDs were dim. Jiggled the connecter for the LEDs, they all went out and only the bottom row blinks. Just curious if you have any insight. Btw great video, love the music

[@AveRage_Joe]

+andrew blackwell Use a little 12v power supply like I did and seperate the strips from each other and put the power supply leads on the little test spots on the led stripes to find the bad ones.

[@freshkrew123]

AveRage Joe yes!! It worked. But not sure how to solder +- together? If put a spot of solder on the led area would that work?

[@AveRage_Joe]

+andrew blackwell Yup thats all I did🖒

[@oyoy5057]

Hello! My tv lost picture with sound remaining and i did the flashlight test (no light in room except my flashlight) and i was able to see the menu options on tv... So i have a question: Guy from the cable company instaled tv reciever with both scart and hdmi (as much as i know hdmi should be enough) so could his "wrong" setup have caused this dmg to my (led smart)tv?!! Thanks.

[@AveRage_Joe]

Oy oy I dont think so, they just burn out at random.

[@oyoy5057]

Thank you for response.

[@AveRage_Joe]

Good luck.

[@bezobaveza4644]

Where is it possible to buy led strip for philips tv 46pfl5507k/12

[@AveRage_Joe]

Shopjimmy.com has a lot of stuff or ebay.

[@bezobaveza4644]

Found this: www.shopjimmy.com/es/tvs/tv-led-light-strip/ but access is denied

[@cypriankatongojr7714]

Great stuff! You just saved me alot of money.

[@nalinkumar463]

hello sir , Am connecting from india ! my panasonic led tv 40" its first on a few 5minutes than the tv is off am going the service center and he told me change the display full .wats a problem sir ??????can u help me??????

[@AveRage_Joe]

Im not sure what he means by the screen is full

[@leonjohnsonjr3331]

Try a 65in like that

[@pspratheesh]

I have a 32 inch LG LED TV. Only Audio is working, ie, No Video. Service men from LG said Led back light is gone, so they had to replace the whole panel of LED STRIPS which costs around $60.He said the LEDs are in series, so they had to replace it all. Is it possible to replace only the faulty ones?

[@AveRage_Joe]

Yes it is possible to replace just the leds. It is also possible to replace just 1 led stripe as well.

[@pspratheesh]

+Your AveRage Joe How many led strips usually contain in a 32 inch led tv? Can you tell me an average cost of led strip of a branded led tv?

[@AveRage_Joe]

It depends on model# but 10 to 12 strips. shopjimmy.com has parts.

[@Jamesnov1970]

The last 32 inch I looked at had three strips with 7 led's on each.

[@AveRage_Joe]

PRATHEESH Awesome! Thanks for sharing.

[@farrukhturamuradov8252]

what is the led voltage ?

[@ThaRedPitbull]

How much would you charge someone to do this?

[@AveRage_Joe]

+ThaRedPitbull-Mix Oh less then $100

[@ThaRedPitbull]

Wow, that's nice of you.

[@AveRage_Joe]

+ThaRedPitbull-Mix Is yours having issues

[@ThaRedPitbull]

My tv was having a banding issue like this guide2lcdtv.files.wordpress.com/2008/10/banding2-300x2251.jpg i.ytimg.com/vi/putZ6NQiDhg/maxresdefault.jpg During some movies I couldn't see and in others I couldn't stop looking at it. The banding and clouding was very noticeable during grey or blue scenes. I ended up just buying another one. I just hope it's not a lemon. It seems like it is getting harder and harder to find a good tv with no problems.

[@mariopadilla9201]

how did you test the light strips?

[@AveRage_Joe]

+Mario Padilla I used a little 12vdc power supply (wallwort)

[@AveRage_Joe]

+mario padilla Oh, there are little round test points

[@AveRage_Joe]

I used one from an old wifi router. You can find them on your old devices, no need to buy as you probly already have it,

[@brownee20007]

Thanks for that, where can I buy them? I am in New Zealand

[@AveRage_Joe]

Over there Im not sure. Here we can get the strips from shopjimmy.com or if you wanted to replace just the bad leds Id check ebay

[@oscarchin1973]

What I meant? When the screen was on. There were 2 extra light bulb brighter on the pictures. It's like 2 extra light up and down at the right hand side in the middle of the screen.

[@AveRage_Joe]

+Fook Siang Oh ok, I would think that you either have a couple leds that are about to go bad or some have gone bad and its letting more voltage go to the leds that are bright.

[@oscarchin1973]

So, do it need to change 2 of LED light.

[@AveRage_Joe]

You would need to open it up to see

[@kamaljeetsingh9325]

can any one tell where i can buy black light led strips of LG TV

[@AveRage_Joe]

dalveer kaur I dont think I have ever seen those. Is it for the tv or another project?

[@Iahusha777Iahuah]

He meant back*

[@deejayitalo]

*How to destroy all of the Led's in your Led TV* You can't just make a bridge in series. Voltage changes in a series wiring so you have to replace the led with another which need to be the same without any resistors

[@oatmeal8586]

Not exactly, following the series circuit analysis: the current flow in a series circuit is the same, but the voltage changes; it means that the current flowing in one strip is the same, no matter how many elemnts, however, the voltage does change. Assuming that 24v is the ideal voltage value and following the Kirchhoff Voltage Law, we substract the voltage value for each LED (Vl) (which is arround 1.18v and 1.5v, typically) and the resulting value is the voltage of all the resistive elements (which I'm gonna call Vrt); then you divide Vrt by the total number of resistive elements to find out the individual voltage value of each resistor (Vrn). After that, You add both Vrn and 1.18~1.5v (LED individual voltage) and the resulting number is the voltage of that node, which I'm calling Vn; lastly, you measure the current of the strip (or take the value given in the specs, which you should have since you're making repairs on an electronic device), I'm gonna call this value Is (current on the strip), so you follow the equation: R=Vn/Is Where R is the value of the resistor you should put between the + and - terminals, although, I recomend using a slightly bigger value (i.e. if R=375, use 380). That way you shouldn't burn your LED's

[@chrismurphy6109]

Watched a few videos on this subject. This one was the only one to suggest shorting the contacts as the "easy fix". I did it & it worked. Thanks! These SMD LEDs gotta be a standard spec across so many models of TV. You'd think they'd be easily & cheaply available on ebay?

[@AveRage_Joe]

Thanks!!! Yeah this was the cheapest easy fix that I could come up with. Sure its not the best option but its still up on the wall and working great. Agreed, they should be easily and cheaply avaliable. Glad it helped :)

[@Mad.man1100]

Awesome video! I'll try it myself but can you show what is the power supply you are using to test the LEDs?

[@AveRage_Joe]

I used a 12volt power supply from an old computer router and 18v from an old drill

[@rodolfopirela2654]

friend, good afternoon, as I do to know how much is the led that you are placing and how do I know how many watts is led that I will replace

[@mohamedelkady8319]

i changed the leds 3 times in three years and it is damaged now what should i do ?!

[@AveRage_Joe]

Im not sure, mine is still working since the last repair!

[@mohamedelkady8319]

AveRage Joe what do you think is the problem ... why it get damged early.

[@AveRage_Joe]

Its probly the same thing, LEDs goin bad!

[@mohamedelkady8319]

yes the problem is in the led but how can i perserve it from damaging and increase its life

[@mohamedelkady8319]

AveRage Joe how can i perseve the led😂

[@peternkwela2897]

are u repear lg 55eg9a7v

[@Freshleopk]

but when i connect panel connector to led driver only two strips get low light snd remaining two almost zero light what i should do

[@uzairuabdullahimuniya9620]

I need help my dvd loptop, it's showing light only but its Born by hi voltage, which I.C can I changes.

[@AveRage_Joe]

That is probly something on the inverter board!

[@anwarbasha6821]

hello Philips led tv the symptoms is upside down

[@kingsun1381]

Thanks for tutorial.

[@AveRage_Joe]

Sunkingvstar Sun You bet, glad it helped!