Seen that so many times Michael, I wouldn’t go near them with a barge pole and I bet Samsung would say “ oh we’ve never heard of that before” and blame the user lol😊
That is disconcerting. Sort of reminds me of the old Zenith sets that the safety cap would blow up in, or the GE sets the cap across the yoke would explode showering the interior of the set with "confetti".
Most sets I see now are coming out of the factory set to 100 percent, in fact I have come across some Vestel sets where it seems impossible to find a backlight setting , no doubt is will be hidden away deep in a menu but it seems like a deliberate ploy on the part of the manufactures to give the set the shortest life possible .
Their goal is for the tv to look bright and flashy while on a store display,in a bright lit environment. However newer models aren 100% full brightness out of the box.Maybe manufacturers learned their lesson;r@michaeldranfield7140
@@michaeldranfield7140 Here's a hint to get by the high backlight brightness in case there is no settings for it, there's a wire wound or some sort of ceramic 2 watt current sensing resistor on the led driver part of the power supply, just change that resistor for a slightly higher value and that should make all the difference,
I remember way back in the 90s Samsung had a problem with a video recorder and they would supply all parts free of charge , now as long as its out of the warranty period there not bothered .
Hi Michael, happy new year to you. I have come across this in 5 to 6 Samsung edge lit tvs so far. My issue with there is that even if the perspex sheet isn't cracked it still will have melted spots on it which can't be removed by sanding or reversing the perspex as it only fits one way in the metal chassis. Samsung are really churning out real substandard units, this trend will lead to the fall of the company from being the leaders in the industry to loosing all consumer trust in the name. Thanks for the video, take care, Allen, Galway
All the memory cards I've gotten from them in the past couple of years have failed after light use (gotten really slow). Warranty took MONTHS to replace two microSD cards. Definitely avoiding them in the future. I've gotten a couple dozen of their microSD cards in the past, no problems. Also probably dozen SSDs from 8-10 years ago and still working great.
Sometimes similar happens with edge-lit CCFL sets, when the lead free solder joint on the end of a tube goes bad, and the bad contact causes similar burn on the light guide sheet, until eventually the tube cracks and the inverter shuts down. Sometimes it is caused not by a bad solder joint, but a failing tube, the cathodes loose their emissivity unevenly, so towards the EOL of the tube, one end can get really hot, melting every plasic bit around itself.
@@michaeldranfield7140 Yes, I have to 32" CCFL Samsungs from 2009, one of them is really high hour, both are still going strong. At least the backlight, that is. The power supplies needed repairs in both of them. One of them still has a bad PFC, but it runs fine without it, so I don't bother rapairing it, actually it consumes a lot less power this way ;-) . IIRC it says 80W on the back, but I can't get it higher than 30-35W with the bad PFC. Of course, the power factor went down from 0.99, to something like 0.66, so it consumes a lot more reactive power, but that's OK for me.
Agreed,many ccfl sets are still kicking after 15 years of heavy abuse,not a single led set lasts that long,without backlight swap.Ccfl era sets had power supply issues though,buldging caps due to high temperatures,caps placed close to high current diodes mostly. @@michaeldranfield7140
This is an old Samsung, the newer ones are even worse , the LED s don't get time to burn up as the LCD screen develops an internal in glass short and a new screen cost more than the TV is worth .
Thank you for sharing this video with us. They get away with it because there is nobody to stop them! In the modern world the authorities are simply not looking for issues like this. Who could the problem be reported to and what action would be taken?
The UK Office for Product safety and Standards is the relevant government department; they direct consumer issues to Citizens' Advice. Judging from the scale of this hazard, evident in the Comments, it would be worthwhile also sending details to the major UK retailers who stock these products. I really am surprised to see Samsung doing this and apparently not caring about the danger.
I had a 55" version which had the same problem fortunately I got it replaced under warranty. I chose to have it replaced with a flat screen version as the curved screens were notorious for the leds burning out. I notice that they now no longer produced curved screen TVs because of these issues.
a big problem with curved TV s is the lcd panel in not actually curved at all , its the same flat glass used in every other set but just bent into a curve by the metal chassis it sits in and due to been stressed a lot of screens just cracked on there own resulting in a lot of un happy customers .
I like that the samsungs are easy to dissasemble, can swap leds easilly under an hour. The trick is finding a donor TV with a broken screen to replace that melted light guide lens. Can take ages to find one.
not quite on topic but i would like to ask about 2 of my sets , the ccfl invertors run flat out regardless of eco and backlight settings ,they kick out quite some heat! they are le37r88bdx and le37a656a i cant tell what type of control signal from the av mainboard the invertors are using for intensity control , is it pwm or an analog voltage or (dreaded) serial data ? ive got shemats without any test voltages or info i just dont know what signal to expect, i moved to car elecronics after crt so lcds not my thing apart from well known issues
What are the LED board(s) mounted on? Are they on a 90 degree bent aluminium plate that extends 6 inches behind the back of the defusing layers / perspex? I fix tvs for live gigs / corporate rental and not yet seen this. the Samsung Q6F have essentially a heatsink the LEDs / flexi pcb are bonded to and extends for a good long way to dissipate the heat, also a lot of people have tvs above fireplaces and that can add to the whole heating of the LEDs as bottom of tv is at 80°c from convection heat off fireplace, I've seen plenty of burnt LG rear mount (with round defusing plastic pucks stuck over) burnt out too but one thing I also find is brightness is set at 100% and backlight level is too so leds are driven hard all the time, they do get bloody hot.
Yes the LED bars are mounted on a aluminium heatsink but this is not an isolated incident , it happens in a few different models of Samsung, no doubt running the backlights at 100 percent contributes to the failure but there are safety circuits that should switch the chain off if a LED fails .
@@mrnmrn1 Yup, right from when I was selling the first plasma panels, people (footballers and other rich people that could afford the £15k) were asking to mount them above their fireplace. I used to tell them no but they insisted. My neighbour last year had a stupidly large one(65" ish) mounted above their fireplace. Fully visible to anyone passing in the street if they haven't closed their storm shutters. The neck ache they must have after a 2-3hr movie 😵
@ro63rto But... there's probably something about this in the user/installation manual, do not put it within x meter vicinity of heat sources. If someone does that, and the TV fails, it looses its warranty. On top of that, if a house fire happens, the fire investigators might blame it on the improper installation of the TV (even if it had nothing to do about it), and the insurance might become void, and/or they might go after and sue the installer of the TV.
there should be protection though to kill the power to the LED s if a lamp goes faulty, clearly it did not operate in this set , more likely down to poor circuit design.
Guessing they are over running the LED's to get them extra bright without thought for the thermal issue , What you could do if you had a sample of that perspex is to give it the flame test to see if it sustains a flame but no electronic product should get that hot by default anyway.
(Look suspiciously at 55" edge-lit Sharp of a similar age that I know has a Samsung panel). That said I have the backlight set right down at 30%... It's not just this issue either - VGH shorts are *very* common on Samsung panels.
the edge lit LED s are mounted on an aluminium plate which is screwed to the back but this should not have gone this far , the safety circuit should have switched the LEDs off if one fails .
Almost every Samsung product our family has bought has been substandard garbage that quickly broke. I stopped buying anything from them a while ago. Laser printer, DVD player/home theater system, SSD, Galaxy S5, Galaxy S7, LCD TV, Laptop - all Samsung and broken. The only surviving products we have from them is some lightly used LCD monitor and a couple of SSDs.
This is the standard failure of the MU,NU and RU Samsungs and most of the higher models of the era. The eco constraints forced upon UK market tvs is one of the major causes of shortening the lives of tvs..backlights on full and lcd panel running half power to achieve an overall lower power draw . Its crazy and since 2020 it's got even worse .
Yes but the protection circuit should have switched off the power to the LED string when the first LED burnt up , the unburnt LED s were still lit up !
@@michaeldranfield7140 addition to this one, a later update seems to have stopped this happening , a bit anyway..the protection circut does now cut in, but this in a new thing..
poor design , years ago something like this would be recognised by the manufacture and modified but these days as soon as the warranty has expired manufactures don't want to know .@@Bucharestguidedtours
I've never rated Samsung tellies, I bought one for my mother's hospital room when the one in there broke, after she passed over it came home with me. I hate it. I doubt anything will be done with overheating unless one can be proven to have started a fatal fire, then the authorities may take a look. And they have the royal warrant too!
Are these conventional LED technology? Or are they those high powered laser "photon pump" jobbies that back fire an LED laser to excite a phosphor dot into generating a ridiculous amount of light [and heat] which is then directed forward through a lens, or a diffuser, depending on the application. Quite common now in "high end" car headlights, where failure rates are horrendously high.
I think TV s are a bit like car headlights , the emphasis is on getting them as bright as possible regardless of how much you shorten the life , as long as it gets out of the warranty period that will do.
This is of little surprise to me, this years CES has just finished with the likes of Samsung boasting even brighter images. But at what price does making the sets safe come into their designs? With the current craze for larger brighter screens the buyers are unaware of how this is acheived and what will happen when they overheat to this extent. As long as people keep buying them, Samsung won't care.
nowdays they cutting all kinds of corners i got my samsung LCD TV Samsung LE37C679 about 12 years ago ive only had to replace a few caps in it as it was suffering from the standby fault and it still going strong.
Just came across your channel. Would you be interested in a fixing a 65inch Sony TV? Dead, no power. Relay does work once plugged in into the socket. No standby light.
I wonder what one which doesn't show a fault would look like? That's to say, is it like that in normal operation or is there a fault which causes this burning?
Turning down the backlight setting in the control menu is the way to go. Keeping it below 80% works wonders for the life of the LEDs, even lower if you can. Although mine was backlit, rather than edge lit, I found it quite acceptable to set the lighting down to 70%. Below that can be a struggle to watch in daytime, but even then, it's only a matter of seconds to adjust. Remember that "Picture Brightness" and "Backlight" are two very different things. "Backlight" sets the amount of light given off from the LEDs, whereas "Brightness" sets the amount of light that can pass through the LCD panel (the opacity of the LCDs), so there is a degree of balance between the two. I tend keep the backlight down, and the brightness up a bit more.
Yes but not the brightness, you need to find the Backlight control and turn it down to the most acceptable level I find 65-70 percent is a good starting point .
difficult to say but this is a problem in quite a few different models of samsung TV , I'm not sure about the edge lit set but some backlit sets run with an LED current of over 400 Ma so the LEDs are pushed very hard , I would guess there is something very wrong with the design because there are safety circuits built in to switch off the LED chain if a LED fails , this has clearly not worked on these sets .
Right Michael, I have a Samsung TV, It's just over a year old and I HATE it, it's the worst piece of crap I have ever bought, so my challenge to you is, what is a good, budget (sub £500) TV? please i really need to know.
5 месяцев назад
The LEDs are undercooled, overpowered, the polycarbonate diffuser browns and absorbs more energy, it browns some more and so you get a nice positive feedback loop. Yes, it might be easy to say "just don't run the bloody brightness at full power" but most customers are ignorant and not only to such technicalities. It does keep the productoin line working and employees employed though... Better cooling, lower light temperature LEDs (less damaging blue light), more LEDs at lowe currents would surely increase efficiency and extend lifetime but customers don't demand such things. They demand cheap high technology in order to feel social accomplishment...
That's pretty shocking, I'm guessing it's cheaper with one strip of edge lit led's than the customary rear mounted arrangement, they're going to have to drive them to the limit to push light evenly across the screen, we had come a long way from the days when the Bush ctv25 loptx/eht stack would catch fire, quite spectacularly!, seems we've come full circle.
had that once when I sold Tatung sets , a dry joint on the scan connector burnt the PCB to charcoal and Tatung supplied me with a brand new PCB . @@qwertykeyboard5901
Hi Michael. I hope you can help me. I am not a TV expert by any means but what problem I have is the remote control on my sharp TV is eating up batteries. I have changed the small electrolytic to no avail. Can you please help. Terry
Good question because its usually the cap that's gone open circuit, on the press of a button its the stored charge on the cap that drives the IR LED , it could be caused by leakage currents flowing when the remote is not been used and for that you could connect a milliamp meter in series with the battery terminal and see what's been drawn , sometimes this can be a problem if the remote has had something spilt it it , a good clean with IPA wont do any harm.
I would say poor design of the protection circuit which has clearly not switched off the power to the LED s when one burnt up , the unburnt LED s were still lit up !
@@michaeldranfield7140 I wondered if those glued-in LCD panels are removable without damage. Looks like foam based double sided tape what holds them in. Maybe some solvent (sticker remover fluid?) can loosen up the glue enough. Unfortunately, most of the sets at this point have glued-in panels. They should make the metal tray that holds the backlight removable from the backside in such sets.
I have a samsung monitor from 2012, i think its a edge lit one? And at the edges the screen is literally bleeding and white fading on each 4 sides and and at the left side theres a whole white fading, these tvs are garbage and i have a lg monitor aswell as from 2012 and it's like new and a AOC led monitor also in great condition from 2013
Last week i decided to clean & blow out the dust from my old sky box,took the old sky card out and the side oposit the gold connectors was black/brown ,the decode chips obviously have got hot enough, to burn the plastic card !!!! Anyone else had this?
I use those cards that you insert into your tv, always had a issue with them from the beginning but i always unplugged them because they got super hot like they're about to catch on fire and i acted soon enough now i just have a 12 volt fan mounted to back of tv using Vesa mount near the card and it's warm but not hot and the gold pins are good but look wore down
I've got an edge lit Samsung in at the moment. The left had half of the screen is dark so it looks like it's edge lit from the sides. I've advised the customer not to have it repaired. They agreed and left it with me. When I've got a bit of spare time I might get it apart & see what state it is in !
if there is any sort of burning evident , even if its not as bad as this one it will show up on the picture when you get the set working , the problem been if the screen is dark you wont be able to see until you disassemble the screen .
wow thats horrid , wonder who supplies their leds but then looks like samsung are over driving them anyway , at what year roughly did samsung become trash? or is it since led backlighting? all 3 of mine are so old they are ccfl lit and they are so easy to keep working but that wont last forever so ill need to find something reliable to move on to -i find it a real drag fixing your own gear
That's really bad. I thought they were LED backlights, NOT laser diodes! That's bad design, not malfunction. I haven't forgotten the NOTE 7 and early LCD TV's that used to go up while in standby!
After what I’ve heard and seen over the last few years, I won’t buy anything that Samsung makes, TVs or otherwise. They are making substandard products and don’t back them up, customer service is not good at all. Read the reviews first before you buy.
Oh my god... what a mess... this is a 100% “no fix“ unit. Or.... fix it and sell the customer a fire extinguisher and smoke detectors which are connected directly to the local Fire Department 🙈
@@michaeldranfield7140 right - this is a absolute no-go. No fix in this case - safety first. People die from smoke and poisons and not from the fire itself. When you sleep, your sense of smell doesn't work. And many/most people doesn't know this.
Samsung's seem to be built as cheaply as possible barely to get through the warranty period, just nasty. Personally I've always found Panasonic TVs to be much higher build quality than Samsung.
i was given a chuckout 'dead' samsung tv a few years ago ,and that couldve caught fire, not the leds, but dry joint on the mains input IEC connector, luckily no too badly burnt, was able to just blob it well with solder and has worked ok since, only 'bad' part of it is its 'power saving' function where it pumps the overall brightness up and down, according to the displayed picture, hope this one doesnt have those cooking leds in, i always turn the brightness down as much as i can anyway to try and prolong life!
Wonder what the backlight was set to? maximum or not far off I expect, which would be the usual story. Never set your back light over a third if you can (my Sony runs at 2 out of 20!). High backlights on any make/model are tv killers.
You don't need to know the cause to know it's a fire hazard, These are scorch marks and if you're watching tv that is SCORCHING then this is a fire hazard. What a dumb statement, how many house fires are there WITHOUT KNOWING the cause. I'm glad I don't live in your house with that kind of dumb attitude.
Doesn't matter what the cause is , the protection circuit did not kick in and switch off the LED chain when the first LED burnt up , all the undamaged lights were still lit.
Surely this should be reported to Trading Standards! As you say, this is a serious fire hazard and the problem should be addressed and Samsung should be forced to make a recall.
Back in the 90s samsung had a problem with a video recorder and supplied parts to repair free of charge to its dealers , there days no one seems bothered , the attitude is , its out of warranty we don't want to know .
I read all the posts and you guys hit the nail on the head. Samsung have followed the same trend as the chinese TV's. Absolute rubbish designed to break and keep their factories churning more crap.
That's shocking!! Seems that Samsung are pushing OLED now as well so they have edge-lit, back-lit and now OLED sets on the market. Wonder what's next?!!
"How do they get away with this ." I might be able to assist. The view from here is, it's because "Governments" licence themselves for immunity from their criminal acts and omissions.
That TV came out in 2018. Absolute madness. Thanks for sharing things like this.
Shocking really but at least it lasted a few years , some of the newer Samsung sets the LCD screen fails after 18 months .
Seen that so many times Michael, I wouldn’t go near them with a barge pole and I bet Samsung would say “ oh we’ve never heard of that before” and blame the user lol😊
That is disconcerting. Sort of reminds me of the old Zenith sets that the safety cap would blow up in, or the GE sets the cap across the yoke would explode showering the interior of the set with "confetti".
Yes I remember the exploding caps in CRT sets, paper and tin foil everywhere .
This is what happens when the firmware is allowing 100% led brightness and the customer has their screen too bright
Most sets I see now are coming out of the factory set to 100 percent, in fact I have come across some Vestel sets where it seems impossible to find a backlight setting , no doubt is will be hidden away deep in a menu but it seems like a deliberate ploy on the part of the manufactures to give the set the shortest life possible .
Their goal is for the tv to look bright and flashy while on a store display,in a bright lit environment. However newer models aren 100% full brightness out of the box.Maybe manufacturers learned their lesson;r@michaeldranfield7140
To get its power rating for sale, these sets have to run like this. (Lights full, lcd panel 30 percent .) And it's getting worse and worse.
I beg to differ. It's 150%.
@@michaeldranfield7140 Here's a hint to get by the high backlight brightness in case there is no settings for it, there's a wire wound or some sort of ceramic 2 watt current sensing resistor on the led driver part of the power supply, just change that resistor for a slightly higher value and that should make all the difference,
Recall should be implemented
I remember way back in the 90s Samsung had a problem with a video recorder and they would supply all parts free of charge , now as long as its out of the warranty period there not bothered .
Hi Michael, happy new year to you. I have come across this in 5 to 6 Samsung edge lit tvs so far. My issue with there is that even if the perspex sheet isn't cracked it still will have melted spots on it which can't be removed by sanding or reversing the perspex as it only fits one way in the metal chassis. Samsung are really churning out real substandard units, this trend will lead to the fall of the company from being the leaders in the industry to loosing all consumer trust in the name. Thanks for the video, take care, Allen, Galway
yes , this is correct any sort of burning no matter how small shows up on the picture of an edge lit set .
All the memory cards I've gotten from them in the past couple of years have failed after light use (gotten really slow). Warranty took MONTHS to replace two microSD cards. Definitely avoiding them in the future. I've gotten a couple dozen of their microSD cards in the past, no problems. Also probably dozen SSDs from 8-10 years ago and still working great.
@@gblargg The newer stuff it the worse it is and the least it lasts unfortunately .
That's just plain nasty! From a company like Samsung, I'd expect much better than that..... Never had anything like that with CCFL backlighting.
Sometimes similar happens with edge-lit CCFL sets, when the lead free solder joint on the end of a tube goes bad, and the bad contact causes similar burn on the light guide sheet, until eventually the tube cracks and the inverter shuts down. Sometimes it is caused not by a bad solder joint, but a failing tube, the cathodes loose their emissivity unevenly, so towards the EOL of the tube, one end can get really hot, melting every plasic bit around itself.
CCFL was far more reliable as you say and 10 times the longer life than most LED lit screens
I don't rate Samsung reliability any more. Seen too many failed items across their range.
@@michaeldranfield7140 Yes, I have to 32" CCFL Samsungs from 2009, one of them is really high hour, both are still going strong. At least the backlight, that is. The power supplies needed repairs in both of them. One of them still has a bad PFC, but it runs fine without it, so I don't bother rapairing it, actually it consumes a lot less power this way ;-) . IIRC it says 80W on the back, but I can't get it higher than 30-35W with the bad PFC. Of course, the power factor went down from 0.99, to something like 0.66, so it consumes a lot more reactive power, but that's OK for me.
Agreed,many ccfl sets are still kicking after 15 years of heavy abuse,not a single led set lasts that long,without backlight swap.Ccfl era sets had power supply issues though,buldging caps due to high temperatures,caps placed close to high current diodes mostly. @@michaeldranfield7140
SHAME ON YOU SAMSUNG - This is a dreadfully dangerous fault to see in mainstream consumer products!
This is an old Samsung, the newer ones are even worse , the LED s don't get time to burn up as the LCD screen develops an internal in glass short and a new screen cost more than the TV is worth .
Thank you for sharing this video with us. They get away with it because there is nobody to stop them! In the modern world the authorities are simply not looking for issues like this. Who could the problem be reported to and what action would be taken?
The UK Office for Product safety and Standards is the relevant government department; they direct consumer issues to Citizens' Advice. Judging from the scale of this hazard, evident in the Comments, it would be worthwhile also sending details to the major UK retailers who stock these products.
I really am surprised to see Samsung doing this and apparently not caring about the danger.
yep , its a problem , as you say no one is bothered as long as it gets passed the warranty period .
Lighting the screen from the edge requires more light ergo more powerful LEDs ergo hotter - avoid edge lit LCDs
But the safety circuit should have switched the set off if there was any sort of LED failure .
Wow, that's quite an eye-opener!
They call it Smellevision. It's the future...
yes, I cant understand why no one noticed a strange smell in the house .
I had a 55" version which had the same problem fortunately I got it replaced under warranty. I chose to have it replaced with a flat screen version as the curved screens were notorious for the leds burning out. I notice that they now no longer produced curved screen TVs because of these issues.
a big problem with curved TV s is the lcd panel in not actually curved at all , its the same flat glass used in every other set but just bent into a curve by the metal chassis it sits in and due to been stressed a lot of screens just cracked on there own resulting in a lot of un happy customers .
This is why personally I would turn the backlight down in the settings menu, so the led's are not ran so harsh.
I like that the samsungs are easy to dissasemble, can swap leds easilly under an hour. The trick is finding a donor TV with a broken screen to replace that melted light guide lens. Can take ages to find one.
Samsung should be ashamed
yes , and they know its a common problem because all the parts can be ordered up at great cost.
not quite on topic but i would like to ask about 2 of my sets , the ccfl invertors run flat out regardless of eco and backlight settings ,they kick out quite some heat! they are le37r88bdx and le37a656a i cant tell what type of control signal from the av mainboard the invertors are using for intensity control , is it pwm or an analog voltage or (dreaded) serial data ? ive got shemats without any test voltages or info
i just dont know what signal to expect, i moved to car elecronics after crt so lcds not my thing apart from well known issues
What are the LED board(s) mounted on? Are they on a 90 degree bent aluminium plate that extends 6 inches behind the back of the defusing layers / perspex? I fix tvs for live gigs / corporate rental and not yet seen this. the Samsung Q6F have essentially a heatsink the LEDs / flexi pcb are bonded to and extends for a good long way to dissipate the heat, also a lot of people have tvs above fireplaces and that can add to the whole heating of the LEDs as bottom of tv is at 80°c from convection heat off fireplace, I've seen plenty of burnt LG rear mount (with round defusing plastic pucks stuck over) burnt out too but one thing I also find is brightness is set at 100% and backlight level is too so leds are driven hard all the time, they do get bloody hot.
Yes the LED bars are mounted on a aluminium heatsink but this is not an isolated incident , it happens in a few different models of Samsung, no doubt running the backlights at 100 percent contributes to the failure but there are safety circuits that should switch the chain off if a LED fails .
Mounting a TV above a fireplace, are people really that stupid?!
@@mrnmrn1
Yup, right from when I was selling the first plasma panels, people (footballers and other rich people that could afford the £15k) were asking to mount them above their fireplace.
I used to tell them no but they insisted.
My neighbour last year had a stupidly large one(65" ish) mounted above their fireplace. Fully visible to anyone passing in the street if they haven't closed their storm shutters.
The neck ache they must have after a 2-3hr movie 😵
@ro63rto But... there's probably something about this in the user/installation manual, do not put it within x meter vicinity of heat sources. If someone does that, and the TV fails, it looses its warranty. On top of that, if a house fire happens, the fire investigators might blame it on the improper installation of the TV (even if it had nothing to do about it), and the insurance might become void, and/or they might go after and sue the installer of the TV.
These day's the live things up to the consumer to carry out Quality Control and testing of Beta gear
there should be protection though to kill the power to the LED s if a lamp goes faulty, clearly it did not operate in this set , more likely down to poor circuit design.
Guessing they are over running the LED's to get them extra bright without thought for the thermal issue , What you could do if you had a sample of that perspex is to give it the flame test to see if it sustains a flame but no electronic product should get that hot by default anyway.
(Look suspiciously at 55" edge-lit Sharp of a similar age that I know has a Samsung panel).
That said I have the backlight set right down at 30%...
It's not just this issue either - VGH shorts are *very* common on Samsung panels.
Lack of heatsink by the looks. Back lit ones use the large backing for cooling. These edge lit look like they have very little cooling
the edge lit LED s are mounted on an aluminium plate which is screwed to the back but this should not have gone this far , the safety circuit should have switched the LEDs off if one fails .
@@michaeldranfield7140 Ah right. Wouldn't they run from a constant current driver which would stop them from drawing extra current?
Samsung will never have any more of my money as trash
newer sets are worse, I have had failure of the LCD panel on quite a few Samsung after 18 months .
Almost every Samsung product our family has bought has been substandard garbage that quickly broke. I stopped buying anything from them a while ago. Laser printer, DVD player/home theater system, SSD, Galaxy S5, Galaxy S7, LCD TV, Laptop - all Samsung and broken. The only surviving products we have from them is some lightly used LCD monitor and a couple of SSDs.
Its sad really as Samsung did once produce some good stuff years back , I was a Samsung dealer and sold loads of CRT stuff .
This is the standard failure of the MU,NU and RU Samsungs and most of the higher models of the era. The eco constraints forced upon UK market tvs is one of the major causes of shortening the lives of tvs..backlights on full and lcd panel running half power to achieve an overall lower power draw . Its crazy and since 2020 it's got even worse .
Yes but the protection circuit should have switched off the power to the LED string when the first LED burnt up , the unburnt LED s were still lit up !
@@michaeldranfield7140 addition to this one, a later update seems to have stopped this happening , a bit anyway..the protection circut does now cut in, but this in a new thing..
poor design , years ago something like this would be recognised by the manufacture and modified but these days as soon as the warranty has expired manufactures don't want to know .@@Bucharestguidedtours
I've never rated Samsung tellies, I bought one for my mother's hospital room when the one in there broke, after she passed over it came home with me. I hate it. I doubt anything will be done with overheating unless one can be proven to have started a fatal fire, then the authorities may take a look. And they have the royal warrant too!
Are these conventional LED technology? Or are they those high powered laser "photon pump" jobbies that back fire an LED laser to excite a phosphor dot into generating a ridiculous amount of light [and heat] which is then directed forward through a lens, or a diffuser, depending on the application. Quite common now in "high end" car headlights, where failure rates are horrendously high.
I think TV s are a bit like car headlights , the emphasis is on getting them as bright as possible regardless of how much you shorten the life , as long as it gets out of the warranty period that will do.
Disgraceful Samsung build quality
the newer ones are even worse , LCD panel failure in less than 2 years .
That Spamsung is so very bad, I am a ex TV engineer and have always recommended Samsung as to be "OK"... not anymore
People ask me what's the best set to buy , I reply just buy a cheap one because paying more money wont buy you a longer life .
Would you recommend a TCL now they effectively have Samsung panels (they bought out Samsung's LCD panel division)?
This is of little surprise to me, this years CES has just finished with the likes of Samsung boasting even brighter images.
But at what price does making the sets safe come into their designs?
With the current craze for larger brighter screens the buyers are unaware of how this is acheived and what will happen when they
overheat to this extent.
As long as people keep buying them, Samsung won't care.
manufactures are no longer bothered as long as the sets gets out of the warranty period that's good enough.
That is the way they all think these days.
If they lasted too long no one would buy the latest models.@@michaeldranfield7140
nowdays they cutting all kinds of corners i got my samsung LCD TV Samsung LE37C679 about 12 years ago ive only had to replace a few caps in it as it was suffering from the standby fault and it still going strong.
The CCFL backlight sets well outlast the new LED ones and are far more repairable .
Came across a similar Samsung, but it was back-lit. Burned to a crisp, it's just silly in this day and age. Nonsense.
I remember watching your video John Joe, it's shocking realey, this is 2024 not the 1970s where sets had no protection against burnups.
I remember watching your video John Joe, it's shocking realey, this is 2024 not the 1970s where sets had no protection against burnups.
Those must be some heavy duty LEDS
I'd think there would be hazardous fumes leeching out over time. Pet birds are sensitive to all sorts of things.
too right, you would have thought someone would have noticed a strange smell .
Just came across your channel.
Would you be interested in a fixing a 65inch Sony TV? Dead, no power. Relay does work once plugged in into the socket. No standby light.
I can take a look if you bring the set in and leave it with me for a few days
I wonder what one which doesn't show a fault would look like? That's to say, is it like that in normal operation or is there a fault which causes this burning?
Had a Samsung UA50F6400AM XXY that had a similar issue, melted the bottom right hand corner of the screen and surrounding bezel.
I have seen the bezel on the front of some sets melt due to led failure before .
Great video, thanks so much Mr. Dranfield, on Samsung flatscreens, would setting the tv at low brightness improve led backlight longevity?
Turning down the backlight setting in the control menu is the way to go. Keeping it below 80% works wonders for the life of the LEDs, even lower if you can. Although mine was backlit, rather than edge lit, I found it quite acceptable to set the lighting down to 70%. Below that can be a struggle to watch in daytime, but even then, it's only a matter of seconds to adjust. Remember that "Picture Brightness" and "Backlight" are two very different things. "Backlight" sets the amount of light given off from the LEDs, whereas "Brightness" sets the amount of light that can pass through the LCD panel (the opacity of the LCDs), so there is a degree of balance between the two. I tend keep the backlight down, and the brightness up a bit more.
Yes but not the brightness, you need to find the Backlight control and turn it down to the most acceptable level I find 65-70 percent is a good starting point .
What would course this. Lack of heatsinking? Power supply supplying too much current? Or just a crappy cost cutting design?
difficult to say but this is a problem in quite a few different models of samsung TV , I'm not sure about the edge lit set but some backlit sets run with an LED current of over 400 Ma so the LEDs are pushed very hard , I would guess there is something very wrong with the design because there are safety circuits built in to switch off the LED chain if a LED fails , this has clearly not worked on these sets .
All of above
Your house might burn down, but Samsung was able to save 2 dollars on unnecessary extra LEDs.
true.
Ive got the perpex diffuser sheet for this tv with no burns
Right Michael, I have a Samsung TV, It's just over a year old and I HATE it, it's the worst piece of crap I have ever bought, so my challenge to you is, what is a good, budget (sub £500) TV? please i really need to know.
The LEDs are undercooled, overpowered, the polycarbonate diffuser browns and absorbs more energy, it browns some more and so you get a nice positive feedback loop.
Yes, it might be easy to say "just don't run the bloody brightness at full power" but most customers are ignorant and not only to such technicalities.
It does keep the productoin line working and employees employed though...
Better cooling, lower light temperature LEDs (less damaging blue light), more LEDs at lowe currents would surely increase efficiency and extend lifetime but customers don't demand such things. They demand cheap high technology in order to feel social accomplishment...
"My telly is brighter than yours!" (Who really cares?) May only last a year and be a complete write off, but hey ho.
Overdriven LED's to give a "brighter picture".
That's pretty shocking, I'm guessing it's cheaper with one strip of edge lit led's than the customary rear mounted arrangement, they're going to have to drive them to the limit to push light evenly across the screen, we had come a long way from the days when the Bush ctv25 loptx/eht stack would catch fire, quite spectacularly!, seems we've come full circle.
i know what you mean , in this day and age this should not be happening, burn ups in TV sets is a 1970 s thing .
@@michaeldranfield7140The horizontal going up in a CRT set is probably quite "exciting".
had that once when I sold Tatung sets , a dry joint on the scan connector burnt the PCB to charcoal and Tatung supplied me with a brand new PCB . @@qwertykeyboard5901
I guess the set gave a smokey picture...
And yet, except for Sony, every other TV maker doesn't even come close to Samsung's quality and reliability. I love Samsung.
Hi Michael. I hope you can help me. I am not a TV expert by any means but what problem I have is the remote control on my sharp TV is eating up batteries. I have changed the small electrolytic to no avail. Can you please help. Terry
Usually leakage current. Clean the circuit board and the rubber key sheet with something like wd40
Good question because its usually the cap that's gone open circuit, on the press of a button its the stored charge on the cap that drives the IR LED , it could be caused by leakage currents flowing when the remote is not been used and for that you could connect a milliamp meter in series with the battery terminal and see what's been drawn , sometimes this can be a problem if the remote has had something spilt it it , a good clean with IPA wont do any harm.
Just buy a generic one for 5 euros,most remotes aren't worth the time and effort to fix.
ASWO box!
i have had two ue55mu6670u with the same problem both right hand side burn ups in the last two months as you say Samsung should ashamed of myself
Is it a problem of inadequate heatsinking or the LEDs are overdriven?
I would say poor design of the protection circuit which has clearly not switched off the power to the LED s when one burnt up , the unburnt LED s were still lit up !
leds in televison sets made them not worth repairing
some still are but as manufactures are going over to gluing the LCD panel in there definitely not worth repairing .
@@michaeldranfield7140 I wondered if those glued-in LCD panels are removable without damage. Looks like foam based double sided tape what holds them in. Maybe some solvent (sticker remover fluid?) can loosen up the glue enough. Unfortunately, most of the sets at this point have glued-in panels. They should make the metal tray that holds the backlight removable from the backside in such sets.
Will a TV last longer if I unplug it when not in use?
Theoretically yes as when the set is in stand by the power supply is still running to provide 5 volts for the micro controller and infared sensor .
It is bad but I suspect if you try and set fire to that plastic sheet it won't sustain a flame.
wow
Exatcley.
I have a samsung monitor from 2012, i think its a edge lit one? And at the edges the screen is literally bleeding and white fading on each 4 sides and and at the left side theres a whole white fading, these tvs are garbage and i have a lg monitor aswell as from 2012 and it's like new and a AOC led monitor also in great condition from 2013
Have you still got the screen Michael ? Would you sell it ? Thanks
sorry no it went to the tip ages ago.
@@michaeldranfield7140 oh well never mind thanks anyway Michael 👍
Its not just samsung with this problem i recently replaced the backlight leds on an LG TV and it has exactly the same problem
True , I had a LG a few years ago emitting smoke out of the back whilst still working .
Last week i decided to clean & blow out the dust from my old sky box,took the old sky card out and the side oposit the gold connectors was black/brown ,the decode chips obviously have got hot enough, to burn the plastic card !!!! Anyone else had this?
I use those cards that you insert into your tv, always had a issue with them from the beginning but i always unplugged them because they got super hot like they're about to catch on fire and i acted soon enough now i just have a 12 volt fan mounted to back of tv using Vesa mount near the card and it's warm but not hot and the gold pins are good but look wore down
😱😱😱
May Off Gas Toxic gas as it heats...
I've got an edge lit Samsung in at the moment. The left had half of the screen is dark so it looks like it's edge lit from the sides. I've advised the customer not to have it repaired. They agreed and left it with me. When I've got a bit of spare time I might get it apart & see what state it is in !
if there is any sort of burning evident , even if its not as bad as this one it will show up on the picture when you get the set working , the problem been if the screen is dark you wont be able to see until you disassemble the screen .
Yeah this has been an issue since like 2015 with samsungs, there's a certain one that really burns up. Trash :(
wow thats horrid , wonder who supplies their leds but then looks like samsung are over driving them anyway , at what year roughly did samsung become trash? or is it since led backlighting? all 3 of mine are so old they are ccfl lit and they are so easy to keep working but that wont last forever so ill need to find something reliable to move on to -i find it a real drag fixing your own gear
That's really bad. I thought they were LED backlights, NOT laser diodes! That's bad design, not malfunction. I haven't forgotten the NOTE 7 and early LCD TV's that used to go up while in standby!
very bad design .
After what I’ve heard and seen over the last few years, I won’t buy anything that Samsung makes, TVs or otherwise. They are making substandard products and don’t back them up, customer service is not good at all. Read the reviews first before you buy.
the later Samsung sets are worse , LED panel failure after 18 months .
My god how many ma do they push through thr LEDs
what makes it worse the LED s were still lit , the safety circuit should have switched this set off as soon as just one LED failed .
Oh my god... what a mess... this is a 100% “no fix“ unit.
Or.... fix it and sell the customer a fire extinguisher and smoke detectors which are connected directly to the local Fire Department 🙈
this sort of thing should never be happening in todays day with all the inbuilt safety circuits .
@@michaeldranfield7140 right - this is a absolute no-go. No fix in this case - safety first. People die from smoke and poisons and not from the fire itself. When you sleep, your sense of smell doesn't work. And many/most people doesn't know this.
Samsung's seem to be built as cheaply as possible barely to get through the warranty period, just nasty. Personally I've always found Panasonic TVs to be much higher build quality than Samsung.
nasty, led bulbs have same issue ,they drive them far too hard, to get the brightness up..
i was given a chuckout 'dead' samsung tv a few years ago ,and that couldve caught fire, not the leds, but dry joint on the mains input IEC connector, luckily no too badly burnt, was able to just blob it well with solder and has worked ok since, only 'bad' part of it is its 'power saving' function where it pumps the overall brightness up and down, according to the displayed picture, hope this one doesnt have those cooking leds in, i always turn the brightness down as much as i can anyway to try and prolong life!
Wonder what the backlight was set to? maximum or not far off I expect, which would be the usual story. Never set your back light over a third if you can (my Sony runs at 2 out of 20!). High backlights on any make/model are tv killers.
what an absolute garbage design
This set is a few years old , the new ones are even worse.
@michaeldranfield7140 what happened to TVs with schematics and service support . They are designed to fail now and not be repaired
Without knowing the cause, you cannot asume that this tv model is a "fire hazard".
You don't need to know the cause to know it's a fire hazard, These are scorch marks and if you're watching tv that is SCORCHING then this is a fire hazard. What a dumb statement, how many house fires are there WITHOUT KNOWING the cause. I'm glad I don't live in your house with that kind of dumb attitude.
Looks to me the cause is bad design, either inadequate heatsink or the LEDs are overdriven.
Doesn't matter what the cause is , the protection circuit did not kick in and switch off the LED chain when the first LED burnt up , all the undamaged lights were still lit.
Surely this should be reported to Trading Standards! As you say, this is a serious fire hazard and the problem should be addressed and Samsung should be forced to make a recall.
Back in the 90s samsung had a problem with a video recorder and supplied parts to repair free of charge to its dealers , there days no one seems bothered , the attitude is , its out of warranty we don't want to know .
I read all the posts and you guys hit the nail on the head. Samsung have followed the same trend as the chinese TV's. Absolute rubbish designed to break and keep their factories churning more crap.
That's shocking!! Seems that Samsung are pushing OLED now as well so they have edge-lit, back-lit and now OLED sets on the market. Wonder what's next?!!
shite design. heat rises, surely the leds at the top would be better.
yes , something totally wrong with the design , protection should have turned it off well before it go to this stage .
@@michaeldranfield7140 seems to affect NU, KU, and MU models.
"How do they get away with this ."
I might be able to assist.
The view from here is, it's because "Governments" licence themselves for immunity from their criminal acts and omissions.
That comes from over driven leds so obviously poor design & the customer had the brightness wound up to 100%.