1 Need help with my TV
Samsung au8000
I know I'm not the first one to ask about this type of TV, as it does power cycles and the stand by led flashes. Already did the checks and determed that it is an lcd issue of some sort. I tried the tape method and I got a result, but not what I expected. It's hard to explain exactly, but I have attached a picture.
(I was in an uncomfortable position so was able to shoot half the screen, but it's the same across the whole panel)
The result is after the tape method. I tried on different places and got similar results.
If anyone knows why this is the result, if I haven't put the tape in the right place, not enough or too much tape or another issue? I do think it's somewhat of an improvement, as before the screen was totally black and bootlooping.
Also in the picture you can see a bit ot blue in the middle, this the desktop of my laptop (default Windows 10 wallpaper). Sound also works and when I do stuff on the laptop, the screen reacts, despite looking this.
Update (03/21/26)
@oldturkey03 the red standby light would blink twice, stop for a bit and blink twice again. From what I've read it corresponds to hardware failure. I fiddled with it a bit yesterday and got it to show parts of the picture briefly, but only once. I did by touching lightly this row of compents that (from what I know) deal with the clock signals of the lcd.
Update (03/21/26)
The resistors are fine. I even checked to see of any of them are shorted to ground with a multimeter but they were all fine
Update (03/22/26)
The tape is on the side of the ribbon cable that connects to the driver board, I've gone for these pins because I can trace them on the pc and they go to LC2, LC1, VGH (the 3 top components, part of the clock signal array)
Update
@oldturkey03 after taping the interconnect cable, on boot up there are vertical lines from top to bottom in the middle of the screen where the Samsung logo would show up, after that lots of horizontal lines appear, they get brighter as time goes on.
Is this a good question?
@packata69 "Already did the checks and determed that it is an lcd" how did you determine that and what did you check? how did you know it was bootlooping if the screen was black? Give us more details.
The tape off will only work if the error is with the signal lines from the driver board. It will not work if there are any underlying issues.
by oldturkey03
When I got the TV (was free from a neighbour) it was boot looping (red status light flashing and back light coming on and off). Removed the back cover, unplugged power to the main board, back light came on and stayed on. After that I hooked it back up and unplugged the ribbon to the ldc (this model doesn't have a separate tcon board) and it booted fine, boot chime played (however screen was black due to the ribbon being unplugged). Basically I've done every troubleshooting step in all of the "Samsung TV red light blinking" videos online. Also these artefacts appeared after the tape. Without the tape the red light gets back to blinking. I just wonder if what is on the picture is a product of wrong tape placement, not enough tape or something else.
Hopefully this information helps.
by Packata69
@packata69 any pattern to the blinking? It is uncommon to get a blink code for failed data lines, but it can give you a code if it "senses" the panel has failed
by oldturkey03
@packata69 see if you clean that image up. It is not focused enough to make anything out. Looks like one of your resistors may have an issue but it's really hard to see.
by oldturkey03
@packata69 let's see what you are taping off
by oldturkey03
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