Hi Michael, I have seen this quite a lot in the past. We have this Samsung Monitor facing into the sun and after sometime it developed these perfect black circles. It was obviously as a result of heat from the sun that damaged the panel. Probably pulled the layers apart due to heat.

@michaeldranfield7140

10 ай бұрын

yes , a few people suggested de lamination within the LCD panel caused by heat .

@tgetvtips

10 ай бұрын

That's really very close to the exact explanation 🙂👍

What a strange technical issue. Could it be a fault somewhere in the decoding of the digital picture? Perhaps some sort of fault with the internal memory used for storing the picture as it's decoded?

@michaeldranfield7140

10 ай бұрын

It could be some sort of digital software problem on the T con or main board , I just have a gut feeling its an LCD panel fault though.

That's weirdly like a black hole. It even has its own 'event horizon'. If you look, as the picture transitions behind the apparent hole, or when you change channels, there is a kind of brightening just around the outside of the hole, just like an even horizon. A quantum singularity in your own living room!

@michaeldranfield7140

10 ай бұрын

Yes I did notice that

The ghost of Mary Whitehouse? I bought a Samsung TV just over a year ago, what a piece of junk, I hate the bloody thing.

@michaeldranfield7140

10 ай бұрын

it should last you another few months then if you have had it a year !

i had the same problem with a Chinese LCD TV with over 10 of these circles 😂😂😂😂😂 and its kept in the store just for the fun of it

At first, I thought it could be some type of production alignment reference set-up point, but as the screen goes off, you can still see it. It's probably a blown pixel drive gasses out enough to form a circular film delamination. I've seen it on BMW MFD units, sunshine just pops them pixels.

@michaeldranfield7140

10 ай бұрын

Lots of reply's suggesting De lamination of the two panels caused by direct heat from sunlight so you could well be right .

Wow a perfect circle. I look forward to a diagnosis. Surely not a random memory glitch. Thanks for sharing.

@michaeldranfield7140

10 ай бұрын

dont think so , I would suspect the LCD panel itself.

The TouchTunes / Pioneer jukebox where I work had the same issue. It was in the top-left corner. Perfectly round black circle. They replaced the whole unit.

Hi Michael, I've seen similar black circles on digital camera LCDs, and it was a fault within the screen itself, but I'm not exactly sure what causes it either, I'm thinking heat damage possibly like other comments on here, or excessive pressure has been put on the screen at that particular spot. I'm enjoying your channel very much, an ex TV repair man from when things didn't have firmware!

@michaeldranfield7140

10 ай бұрын

someone else suggested damage to the screen from direct sunlight, things were far better before TVs were software driven as you say, and it wouldn't be as bad if the manufactures actually supplied software.

Could it be something has slipped down between the LCD and backlight? Are there vent holes for example that a kid could have poked something in?

@gravyytube

10 ай бұрын

That was my thought a sticky label dried lost its stick and dropped down

I've got a display tester which has a number of LVDS connectors, you could use it to see if it's for real a display fault. Maybe you have it? As well, there are mainboard testers on the market. This way you'd have no doubt what is causing it.

@michaeldranfield7140

10 ай бұрын

On an old set like this you should be able to switch on the LCD aging mode to confirm the problem but its in the scrap pile now .

What happens if you try switching through the various zoom modes, or aspect ratios? Does the spot get bigger, smaller, or change from round to oval? I'm Thinking it will remain constant, because I suspect it's a defect in the LCD panel itself, but if the spot does change in any way, then I'd be thinking of a fault somewhere in the video processing? I'm curious because I have a Sanyo TV of about the same age, with much the same problem, except that I already know in mine, it's the panel itself that's at fault. It was a curious thing, because it began as a little bit of blue, sagging down from the top edge of the screen. Over time, it became a large blue "U" shaped area at the top of the screen. Left to run, the "U" shape slowly progressed down the screen and became a black spot, with the top of the "U" closing off above it, and the picture returning to normal above the spot. Later on, I became aware that the black spot was actually quite hot relative to the rest of the screen, and that the top edge of the screen was becoming filled with dead pixels and incorrect colours (mostly blue). Why the spot detached itself from the top of the screen, and why it began to migrate downwards is a complete mystery to me.

@michaeldranfield7140

10 ай бұрын

I didn't look into the problem as its only an old set someone gave me but I have seen the problem you describe which seems to be caused by air getting in the LCD panel and causing the liquid crystal to run .

wow , its like the ball off the Prisoner . you are number 6 now

Ive seen this before. A wiring tech I worked with had an lcd monitor on an an arm mount and accidentally left his heat gun pointed at the screen after it was switched off. Perfect circle just like that ! Could it be a hair dryer ?

@michaeldranfield7140

10 ай бұрын

Most replies suggest heat as you say, heat from the sun if the set was in front of a window .

I've got a panel with several of such symptoms. Maybe I'll share on my channel soon so we can trash it out. 🙂

@michaeldranfield7140

10 ай бұрын

only an old set someone gave me so I didnt look too much but I would suspect LCD screen fault.

@tgetvtips

10 ай бұрын

It indeed is screen fault

Does the menu go under or over the circle? Can you reset the software (settings reset at first)? It looks like something in the hardware/software that displays the menu, drawing a circle in the overlay.

@michaeldranfield7140

10 ай бұрын

I didnt look any further than making this video, its possible I guess it could be some sort of factory test pattern that has popped up due to a software problem .

I've seen this on some monitors, it starts as a small dot, then spreads bigger and bigger. My guess is the delamination of the front and back glass of the LCD. I have a very old Thomson LCD with this problem, but it's not a circle because it started to appear at the edge.

@michaeldranfield7140

10 ай бұрын

someone else suggested de lamination caused by the sun shining on the screen .

Saw hundreds of faulty screens in my time at JVC, but nothing like that.

@michaeldranfield7140

10 ай бұрын

it is indeed very strange .

Is it a sticky label, lost its stick & slipped down?

Commonly known as the *Samsung Circle of death*

@michaeldranfield7140

10 ай бұрын

Nice one .

That looks awesome..imagine if it was shaped like a crop circle.

@michaeldranfield7140

10 ай бұрын

I remember crop circles , that was a long time ago now .

Very strange, going by the other comments i agree with them that it was caused by heat damage probably been beside a window and the sun burned that perfect circle. Only option is a new LCD but the set is too old to justify it.

@michaeldranfield7140

10 ай бұрын

heat seems to be the most likeliest cause .

1:12 I think the inkt of your LCD panel is run out :-) Normally you would think a few death pixels , but these are more then a few, and in a perfect circle, so that will not be the case. Some foil that has delaminated inside the panel ?

Is it the 1st of April??

@michaeldranfield7140

10 ай бұрын

no , its genuine

Put a slightly larger suction cup over the spot and keep it there for a few days. Check for vacuum every once in a while.

Has someone thrown a ball at it or has there been water damage somewhere?

You should be a bit more careful when touching those you may get pulled in, lol looks like it was hit with a squash ball.

@michaeldranfield7140

10 ай бұрын

it does doesn't it

i know what that is as my nephew has got one exactly the same on his tv, he was shooting his brother with a nerf gun and missed it hit the TV square on so left a perfect circle same as that, its still there to this day as he kept the tv

I was going to say a high wattage laser pointer, but a comment said heat gun. Heat gun / hair dryer sounds more likely.

Worth trying a little squirt of compressed air to cool it off and see if it has any effect

Looks like someone may have thrown a tennis ball at the screen.

@tgetvtips

10 ай бұрын

If that's true, it would have been a great miracle to have had that as the result. 🙂

@Spiritof1955

10 ай бұрын

@@tgetvtips The reason I say this is because before I recently retired I worked as a school IT Technician for around 20 years. I often came across this effect on large and small screen computer monitors, and also laptops, where students had hit the screen with something round. Smaller versions of this were often caused by students poking the screen with their finger. Prior to being a school IT Tech I was a TV and Audio Engineer for 30 years from 1970. Happy days. 😊

@tgetvtips

10 ай бұрын

@@Spiritof1955giving it a second thought... Depending on the degree of impact, it's probable. Guess l initially imagined a tennis ball travelling at 100m/h.😀 I also have handled LCD panels since i was a kid, and I think I have a fairly decent understanding of what the condition is between the glass wafers that brings about that appearance. I intend to make and post on my channel some content on this very problem soon.

@Spiritof1955

10 ай бұрын

@@tgetvtips I was thinking more of someone playing with a tennis ball with their dog in the living room, and things getting a little out of hand 😂

@tgetvtips

10 ай бұрын

@@Spiritof1955 I get it now. 😀

Had that before but there were 3 or 4 of them, someone suggested heating it up with a hairdryer but I never tried it But I agree it is an odd fault thanks Michael

@screen-protector

10 ай бұрын

Good that you did not try it :D. I'm 100% sure it would not help ;).

@michaeldranfield7140

10 ай бұрын

I heated up a lcd panel once with a hot air gun , cant remember what for , I may have just been experimenting for curiosity and the polariser turned yellow rendering it useless.

@wisher21uk

10 ай бұрын

@@michaeldranfield7140 maybe the heat gun was too hot for it ? I will look around to see if I can see where I got the hairdryer idea from .

Looks like somebody shot at it with a nerf gun or suction dart.

@michaeldranfield7140

10 ай бұрын

nothing visible when the set is switched off so I dont think its screen damage .

@carlilemike

10 ай бұрын

I've seen this on ticket vending machines in train stations

@capleaker3721

10 ай бұрын

I found that out by my boy's bathroom being shared to each of their bedrooms. If they leave the french doors open on either side, they shoot each other with Nerf guns through their shared bathroom! I changed out a monitor that got shot by a Nerf type gun that had a suction cup ammo. The monitor had a perfect circle and left no marks on the screen. Can't win.@@carlilemike

Hi Micheal, brilliant channel. Thank you. Any tips for DSE on a Sony Bravia 65 inch from 2015. Thanks again. Great teacher👍👍👍

@michaeldranfield7140

2 ай бұрын

for a 9 year old TV there is a good chance parts will be no longer available so a used board found on the internet may be your only chance .

@user-nq1mb6ix2s

2 ай бұрын

Thanks Michael. Will that stop the grid appearing? If so which board please

@michaeldranfield7140

2 ай бұрын

@@user-nq1mb6ix2s no board, you need to replace the LCD panel

Please crack it open. Can you sea it under a bright light ? Does seem a bit like a decoder issue that wouldn’t be there using an external input.

@michaeldranfield7140

10 ай бұрын

its in the scrap pile now quite a few people commented this is most likely caused by De lamination of the LCD glass caused by heat and maybe from strong sunlight.

Somebody dropped a 10p down the back. Give it a shake and it'll come out! 🤣

I don't think it is the LCD. I think someone placed a dark disk between the light defuser and the LCD panel to confuse us

@tgetvtips

10 ай бұрын

🤣

How bizarre! It'd be great if you find out what the reason for this circle is.

@michaeldranfield7140

10 ай бұрын

if I had the time I could have swapped the T con and main board to eliminate the problem but I just have a gut feeling this is a problem on the lcd panel .

@colintinker7778

10 ай бұрын

@@michaeldranfield7140 I can't imagine the LCD having a perfect circle as a failure. Very odd fault though. It's got me thinking!

Its the starting of a black hole. Please dont get too close. We will never see you again. You will find the TV is quite heavy as well. Last time I say a similar thing, was when I client, after questioning, said he had left the TV on the rear parcel shelf in his car in the sun.

does look like a pressure point now seen that on phone screens😮

Heat damage to the LCD panel, possibly someone fooling around with a hair drier or similar ( In my opinion)

My first thought was someone shining a very powerful led torch or laser(some are powerful enough to burn paper etc now) at the screen and then oops!

@michaeldranfield7140

9 ай бұрын

most reply's seem to say de lamination of the glass which seems quite plausible .

It is a shame you are not going any further with this

@michaeldranfield7140

10 ай бұрын

De lamination of the LCD panels seems to be the most common comments which seems perfectly reasonable .

it usual defect for old panels . dehermetization

@michaeldranfield7140

10 ай бұрын

Thats a word I have never heard of so I must look it up , others have suggested De lamination of the LCD panel .

this is so interesting 😃😃 was no LED, so I don't think there is a problem with the panel. I think a round object fell on the CFL and caused this.

@michaeldranfield7140

10 ай бұрын

no led s in this set , its CCFL backlight.

baffled

@michaeldranfield7140

10 ай бұрын

Most people are suggesting De lamination of the LCD panlel s caused by heat from sunlight.

Air bubble in the liquid crystal fluid

Heat damage? The kids playing with mum's hairdryer?

has to be a damaged panel from impact or heat

@michaeldranfield7140

10 ай бұрын

lot of people suggested heat, more likely sunlight on the screen was the common suggestion .

I had a Samsung monitor with this black circle, it was caused by water damage.

Guess a software glitch with on-screen menu

I think it's called an ink spot caused by heat from the led😮

@timballam3675

10 ай бұрын

That's normally from an impact on the screen, they can be round but mainly not a perfect circle!

@PRDowding

10 ай бұрын

Seems a lot bigger than what a LED would cause ? Besides there would be several layers of diffuser sheets plus an air gap between the screen & the LED's. Isn't this TV too old to be LED back lit ?

@michaeldranfield7140

10 ай бұрын

No led s in here ,its a 12 year old CCFL backlight set.

@michaeldranfield7140

10 ай бұрын

@@PRDowding Correct , its CCFL backlight.

Someone put a round magnet on the screen :)

For such regular circularity from a system that is essentially rectilinear, as is an LCD panel, is extremely unlikely, so an electronic fault is implausible (I'd love to be proven wrong!). Only software is likely to produce such a regular circle. A damaged LCD cell could leak and affect adjacent cells, but this would be unlikely to produce such regularity. External damage by something circular is possible, but it would be unlikely to produce such regularity. I suspect a circular chad (foreign body) between the backlight and panel.

@SniperDog58

10 ай бұрын

I argee with you, I've never seen anything so perfectly round as a [panel fault. Is it me or did that circle move position to the right of screen towards the end of the video.

@mrnmrn1

10 ай бұрын

No, it's quite a common issue, I've seen monitors with this failure. It starts as a small dot, and spreads. Probably the front and back glass of the panel are delaminating. It's definitely a panel issue, you can see it with a flashlight if the TV is turned off.

@frogandspanner

10 ай бұрын

@@mrnmrn1 So perfectly circular?

@mrnmrn1

10 ай бұрын

It seems it can be. The ones I came across were quite circular, maybe not as perfectly as this one, I can't recall. But the fact that it can be seen with the set unpowered makes it obvious that it's an LCD fault. I can't imagine an electronic/signal processing failure that can cause something like this. It would be either a horizontal or verical line, or the entire picture screwed up.@@frogandspanner

Well you are right, it is a perfect circle. BUt I have no idea what the source of this problem is.

lol that's amazing! Have you looked inside yet?

@michaeldranfield7140

10 ай бұрын

No , didnt even bother , just stuck it in the scrap pile !

@Dick-Dastardly

10 ай бұрын

😃