How to Solder NEW Surface Mounted LEDs in TVs Instead of Replacing Strips - MUCH CHEAPER FIX!
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- Опубликовано: 7 июн 2024
- This is a more concise tutorial of board level soldering SMD surface mount LEDs in a Samsung TV. I showed this process in another video, but it was long and showed all my failures as well. Click here to see that video and the entire troubleshooting process: • The REPAIR Video TV Ma...
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(These are the LEDs I used on these Samsung units. They probably work in a lot of TVs. Just make sure your old ones are 3.5mm and run at about 3.5V max per LED. Your unit might need another part number though. Just be aware.)
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Love your new format Brad, much like the way I work. Your amp stuff is world class too, thanks man you are doing a great thing here by sharing your knowledge and experience.
Hi Brad, from the UK, loving all the newer stuff your doing , and the old music stuff too. i have just started to try surface mount so these type of videos really help . thank you
Thanks Brad for the led solder-jockery! These are valuable tips! Plastic and hot solder usually don’t get along! Your method is solid! Love from NW Colorado on the 4th. Thanxz
Great job Brad! The surface mount stuff is tricky!
Brutally simple removal technique;-)
Good job
Thank you for the helpful guide. I am impressed that the heat produced from the heat gun does not destroy the LED component. I see from your comments you used the TXINLEI 8586 110V Solder Station. What temperature did you set the heat gun to?
I think you are damaging the layer on the LED by heating it from above. I don't think it was soldered by heating from the top in the factory!
Great job! 👍thanks for sharing Brad!
Hi friend thanks for the informative video, I tried your way to solder on the new leds and it worked
Awesome work. Keep it up.
Awesome. And timely. I have an led tv that has a fault. It has a faint picture that shows up if you shine a flashlight on the display, which I think indicates either a bad led backlight or the board for it. I'd like to fix it if possible. I'm tired of throwing away simple devices because nobody thinks it worth fixing things anymore.
Great video, thank you . Grts. From Suriname 😮
You would know it Brad. I just bought a new soldering station without the rework gun! Oh well, I’ll just have to tell the wife I need the rework gun and buy another one when I need it. Or, maybe you could show us how to mod our old heat gun to work on these things? I’d watch!!!!
Very helpful video.😊
I have done this a small hand full of times and use a hotplate for this purpose purchased on Amazon. It heats from the bottom and worked great each time. Just need to be careful as I burned a finger or two the first few times.
Where can I get the leds n what type of leds are this . Also are all leds same for different tvs
Where I can purchase those leds replacement?
Added the 1K like for your video! I have repaired lots of stuff, including TV's, but repairing these LED strips, my first time. Luckily I already have Hot Air rework station, good commercial soldering iron, and skills. There's a video of a guy doing this with an Alcohol Lamp, heating the strip from the bottom to remove the LED's. If you haven't seen it, you might like watching it.
Can you do this with an old strip that has some working LEDs?
Hello from Germany, 🙂✌
Based on my experience, I heated them from below. Otherwise the plastic will melt and the LED won't survive for long. 👍
Great video Brad these videos are so helpful .
Any issues with the LEDs not replaced failing prematurely later?
I love it. How did you re-attach the lenses?
I have seen people super glue the lenses on those 3 dots that sorround the led after scraping off the old glue.
Been playing with game console repair lately. Newer stuff has that low melt solder. No wonder only half of them work when they can be taken apart with a hair dryer. Chips get hotter than that when a little dust gets in them
The manufacturer rarely uses it. Mostly repairs or mods in my experience. Smd stuff is easy to kill though haha. I'm in and out quick with a hot iron and leaded solder haha
how do you get the voltage for the led..so you would know what to buy..
Pretty sweet.
I did replace close to 5 of those led using older led for another tv, problem is they are dimmer once I turn the TV on, what surprised me when I saw that is that when I use my led tester they are the same brightness as the others but thought the tv power they produce less light even if the original one's one the same strip produce full brightness
good job , how do you know if the tv needs 3v or 6v smd led i have a tcl 43s421 to fix and not sure what voltage these leds need
Good question, I should have known that before replacing mine :), i should have use my multimeter and measure on the backlights
hello my friend i have to ask you something i have a samsung UE48H6470 led tv i have changed the led bars they all have vertical plastics holding the reflector i broke them all they are no more is there a problem and then the light beam of the leds reflects on the screen where is the problem
10/10 Thank you
Thanks
I've fixed two TVs, a Panasonic and an ALDI 'Bauhn'. Both had single led failures which stopped all other leds glowing [series circuits?]. I tracked down the failed led and removed both lens and led. Then I snipped a working led from a spare backlight strip, about 1 1/2 inch of strip either side. Then I 'jumper wired' this in place and stuck it down with double sided tape. Unfortunately in the Bauhn a further led burned out shortly after reassembly and I had to replace it also.
I salvaged the backlight strips from a 'broken-screen' tv I found dumped nearby.
Sometimes with backlight failure the screen is still operating. If you shine a light onto the screen you can just make out the picture. If you see that picture then you'll feel more confident that it's just a backlight failure.
So cool!! You make that look really easy!!! Is it possible to fix a Plasma Big Screen???
Depends on the problem. Is the problem a broken or cracked screen? If so, not likely to find a replacement.
@@TheGuitologist My main TV is a Panasonic 50" Plasma I bought back in 2010.. I love it and is still working great!! Hopefully will never get a broken or cracked screen!! Just seen other people with Plasmas have Horizontal lines and or large dim areas appearing and making them un-watchable. Would be nice to know if there could be a fix other than to throw them away in a junkyard!!!
Very useful follow up video. I like the long one as well as it shows the whole journey, including the learning process. More RUclipsrs should follow that format (full video + condensed "summary"). Anyway, I was thinking SMD-solder-paste may be helpful here. I seem to remember it melts at a lower temperature so it would not strain the LEDs that much during soldering. (I fear the LEDs may break down early because they were strained/overheated during soldering)
Thank you for the useful video !
/chrisV
138c paste would be good ............
There is no need to crush/break the LEDs, as mechanical stress has more potential for substrate damage than heat. You may need a smaller exit tip to keep the heat concentrated, and perhaps less air speed.
In this case, I wasn't doing it with damage prevention in mind, only speed. It's very fast removing them by breaking them off and then coming back with the iron. You could be right in your assertion generally, but out of all the ones I replaced, no substrate or pad was damaged using this method.
@@TheGuitologist I say do what works for you, if we all went by the book or by other peoples rules this hobby would be boring AF, finding shortcuts that work is half the rush of doing all this, hell i just saw a couple of shortcuts i'm going to attempt just by watching this great video. And i say hobby because it is fun to me as much as profitable.👍
thank you lot's😘
thanks for sharing your ideas - just a suggestion. Rather heat up the solder for the LED replacement from the bottom...then you dont have to burn the LED with the hot air. The removal can also be done by melting the solder from the bottom ;-)
I was gonna say that.. or use a clothes iron if u have too.. or hot plate.. but if ur gonna use hot air.. don't burn up the plastic
@@TerryDeSimone I noticed the other side of the strip is copper coated, so I was thinking maybe that makes it easier to heat from beneath. Might need to watch your fingers though and don't lean over too close or things could get a bit warm.
With all do respect but you fried the led when trying to solder it. The entire silicon is wasted and that led will not last long. You should heat from the bottom instead and no hit the led directly.
I've tried this method,however instead of a heat gun, i used a hot plate, it does save you money, but the amount of time its not worthy since some of the brand new strip sets are cheap enough, also, if you just replace the band LEDs on each strip, eventualy the other ones will go bad, its always better to replace all of them with brand new strips. Lastly, those LED lenses are a pain to glue back and some strips if they are just a bit crooked you'll end up with white spots on the screen.
Why you don't use hot plate or iron ?
It's easier with hot plate or iron !
Best regards,
Thank you for your video.
Does it make much difference to put the lenses back over the LEDs or not?
The lens is needed to spread the light sideways onto the white lining sheet
Are The Led's Marked + & -?
I have a Sony bought in 2010 and it still works like its brand new. I opened it up and all the caps are Nichicon. The factory warranty was only 1 year
Nichicon is a pretty good brand.
Jennifer's right. Nichicon are good caps.
Good deal!!!
Yeah I wouldn't rip off the LED with the pliers like that because if the pads from the trace come off with it then you're going to have fun bridging everything and it won't sit flat , it works though but it is possible too rip the pads and if you use the heat gun from the bottom then you don't burn anything on the top and you don't worry about the LED going for a ride I'm sure this has been mentioned in some of your comments but I did not read any of them so my apologies if I sound like a broken record other than that cool video cheers
If you're using hot air and you're worried about something melting. Just come from underneath
Yep, or use a hotplate (old electric hob)
It's better to heat from underneath. You can preheat, then place the LED on top and heat it again. If the pads match well, the LED will automatically slide into place and flatten itself when the solder melts. And it won't blow it anywhere.
Good tutorial. You get 5 stars and a chocolate chip cookie.
You busy body. Must not have got the memo that the subs gave you the day off. Home repairs during Bidenworld are worth their weight in gold though. Salute to you sir
What causes Backlight to get spoiled .. I replaced a single Backlight, 2 months later the same backlight which was replaced is already burnt and spoiled... All other Backlight are working
Heat from underneath it save heating the led too much which shortens the life of the led but you did well 😊
No premiere today?
Interesting that you recommend lead based solder. No wonder your having such good luck.
I got enough lead solder to last the rest of my life. I hate fake solder without lead.
I wonder if lead solder is even still available everywhere? They probably need to hire drug mules to smuggle it into California where's it's listed more dangerous than cocaine.
You can still get lead solder from China and here in the US. And at least one Canadian company I know of makes it. It's not banned yet.
how do you put the lens back on ?
Super glue
Oh Yeah!
Use the blower from behind not directly ✌
Yanlış anlama ama onu altına ısıtıp yapman gerkmezmi
Haven't been inside a TV since I had a Telefunken CRT. It used to blow the line transistors now and then.
Got one finger burned by the HV once too. Nasty stuff! I don't like TV's.
I’m really behind in my tv 📺 guitar abilities.
It's much easier with a hot plate like mhp30. The air gun actually melts the LED.
You must NEVER use the welder on that way. It is not a painting operation. You have to warm the area with the welder and then, apply the tin, which will melt and cover the area. The way you do it you only will get the tin totally burnt. Good video anyway and do not worry, a lot of people use the welder in that way, but it is totally wrong.
soldering iron not welder ..................
Wish he would have tested the LEDs
Dude you're dialed...cool
This impressive to me. Primarily because I am too lazy to try to figure this particular thing out.
I think there need a lot practice and good luck, tried three LEDs dead all fried from hot air gun, that basement not copper - some kind of China material where solder won't stick
Start by buying a proper soldering station like Weller ,jbc or if you are on a tight budget start with a universal 80w soldering iron (80w seems allot but your dealing with a cheap iron)proper tweezer and you need to calculate your led that your gonna replace otherwise after 2 months you gonna replace the same led on that row of line for example you have a Samsung backlight system that requires 3v per led you can replace it with another 3v led universal but you need to know how much what you backlight circuit draws If you backlight uses 3v 1w led I would use a 3v 1.5w led instead by trial and error I found that they last longer than if I would install regular 3v 1w led
@@Creative_thinking359 you are right
Are you not melting them, probably better solder from down.
You didn't explain how you replace the lens. Is it simple?
Just a couple dots of super glue beside the LEDs and set the lens back down, centered over the LED. Simple.
@@TheGuitologist Thanks.
I use aluminum tape and scotch tape. I dont know how to solder. And it repaired my black screen. Am i Crazy or what.😅
Could you tell me how to do it without soldering I'm just about to fix my 65 inch TV and I've never soldered I'd rather try your technique it would be greatly appreciated thank you
Has anyone ever told you that you sound like Theo Von?
The best thing is to replace all of them because the rest would burn ASAP
I just can’t. These new surface mount parts piss me off. Why complicate things to fix?
If you learn how to solder these, you've beaten the system. If you don't, you're at the mercy of the manufacturers and you'll be overpaying for TVs, buying a new one every few years.
Led has melted😂😂😂
A modern day Dick Proenneke
If that's the same guy I'm thinking of, I saw some documentary series with him a long time ago. I guess they were filmed in the 70s maybe? He was awesome.
you melted all plastic materials around led you better heated from under led
Repair?...ok...
worst soldring technique for led🙁
clueless video. There is a reason it is recommended to replace all led strings when they start to fail but there is also a firmware update that has to be done as well.
pfft. Ok.
@@TheGuitologist the blind leading the blind is always good for a laugh but never the right way to do things. Don't let that stop you tho 😂
had to stop watching when the soDDer iron came out.. the tip, what a joke!
Oh noes! His iron tip is worn down and he still managed to fix the thing. I can't watch because my widdle feelings will be hurt. boo hoo.
boy it hurts looking you killing this job ! please stop making such poor job ! you have correct tool but not the right technic !
for such job heat gun goes under the strip so you can unsolder the led and same for soldering back the new one without damaging it from direct it. even better and simpler with hot plate