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Hello mates. Few days before my led tv starts to show some purple spots. 1 at right bottom corner thats the most noticeable 2 on middle of the screen smaller ones and 1 left bottom.the are like a small tints. The problem persist in all modes hdmi,cable,etc and in menus. If anyone knows i will be glad to advice me. Tv is almost 3 years old out of warranty.
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SecretCeremony that looks like a backlight array issue. Either the caps are falling off or the LED’s are not lighting up properly. We’ll need the complete model number for your TV to see if this is a common issue. If so, you can repalce the LED array but it’s a bit tedious since you will have to disasemble your panel. Also, let us see what it looks like when it displays a complete image not just a single colored screen.
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hi @oldturkey03 !The model is UE48H6290SS its excactly the same when it displays a complete image. no big differences just the purple tints gets more darker on green or darker colors but the purple color still exists.no change at all.Plus the last 2 days 1 new purple spot appeared on center left side of screen!
2 new photos on links :
SecretCeremony this is apparently referred to as "Magenta noise". Plenty of forums are looking at solutions and it appears to be predominantly on Samsungs and appears to be a manufacturing issue. If you do not have the purple noise on your TV's menu, a new main board may resolve the issue. Since it shows on your menus as well, you would most likely need a new panel. I'd contact Samsung and raise the issue with them, even so your TV is out of warranty. It is not "burn in" nor a "pressure mark issue".
Sorry, wish I would have better news for you.
thx for your time @oldturkey03 . i had already contacted samsung but they cant do anything as the tv is out of warranty.can u advice me what can i do alone to try at least something before i go in search for a new tv?the problem as far as i understand is the panel so its the leds that causes that magenta noise ? i am familiar with electronics so at least i can try something !
SecretCeremony from what I've read it looks like voltage issues on the LED driver board that control the LED's. I would start with a new main board (yes I'd buy it from somewhere where I can return it in case it does not work) then re-evaluate on that.
The LCD panel will be connect to a driver board that is part of the panel, take a look on that one and see what you find. Post some good images of that board with your question so we may be lucky and find some sort of schematic etc. I would even contemplate on getting a universal driver for the panel just to see if the same issues are present when every board from the TV is disconnected. Sounds like a lot of work and maybe even some $$$ foolishly spend but I do not like to concede defeat.
ok @oldturkey03 i will check this on this week. from a fast check i did already mainboard, t con and power supply board looks good ( bad caps etc not found).
i didnt found any LED driver board on the back of the tv so i suspect that i must pull out the front frame and more components to get in it ? as for the leds inside the panel i think i can test them 1 by 1 to see if anyone is bad or lights purple color than white. i dont have a power supply for this job but i will find some way.are all of this ok for you or you do not suggest something i told? i will post pictures of all the components so wait for it!
Again many thx man.
It could be LCD Bruising from a knock or bump. you can replace the panel but its probably the same price as getting a refurbished one.
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Hi @zachwaxman and thx for your reply. For your information i must tell you that i never knock move or dump the tv the last couple of years :P
The TV is damaged and needs to be replaced. There is no known fix. Of course, you should not buy anything from Samsung. Check the following conversation (which is going on for some time)
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T con board is at fault
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rc7723 explain how you made that determination. Why would you think this is a T-con board issue?
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