iFixit - Answers With Device "UN65NU6900FXZA"

UN65NU6900FXZA: Bad panel or main/t-con board

Thu, 15 Aug 2024 17:15:33 -0700

I have a samsung un65nu6070fxza that the picture quit working on. I need someone with more knowledge on tv repair than me now. At first the picture wouldn't come on at all, I disconnected all the cables, cleaned, and reinstalled with no change. Pulled off one side of the t-con cables and half the screen turns white and half black. Messed around with taping off the clock channels and finally got a picture back but now there's 3-12 colored lines on the left side. They seem to come and go but there's always at least 3-4, usually in the same spot but not all the time. With the clock lines taped off after about a minute or so the entire screen would have colored bars across it and flicker between the bars and picture. I took all the tape off and now it shows picture again with the 3-4 colored vertical lines and flickers between a picture and white and grey bars. I should also note that when it actually shows a picture all the brown cables on the driver board to the lcd panel are extremely hot and applying pressure/wiggling has no effect on the lines or picture. Any more troubleshooting tips would be greatly appreciated

Edit. @oldturkey03 my last post kept getting deleted for some reason but to answer some of your questions. Any time the picture is on all the ribbon cables on the driver boards get hot(with and without the tape on the clock lines). All of the boards look as they should, no physical damage or water damage/corrosion. I have pretty limited knowledge on where test points are on circuit boards unless it's painfully obvious. The tcon is integrated in the main board on this model but I tested the voltage on the cable that connects to the main board and most are 12v and one or two 3.3v. I also checked voltage on the driver board(one 1 of them have the test points) the vcc showed 3.3v when the picture was on then had no voltage when the picture went grey and white. I suspect the panel is bad and the main board/tcon is going into some sort of protection mode

⟐ Commented August 15, 2024 at 17:15 MST

UN65NU6900FXZA: I recently replaced a burnt out back light in my TV

Mon, 01 May 2023 08:58:36 -0700

The screen is now brighter on the bottom and darker on the top, I was wondering if anyone might know the direct cause before I tear it apart and trial and error to try and fix it thanks!

⟐ Commented May 01, 2023 at 8:58 MST

UN65NU6900FXZA: How do I get rid of the vertical lines?

Sun, 24 Sep 2023 07:11:00 -0700

I have a Samsung UN65NU7300FXZA with vertical lines. The thin vertical lines,of all colors, start to show up appropriately 20 seconds after I turn my TV on. One at a time and in two specific areas of the screen. Since it didn't get these lines until a short period after I turned it on I thought maybe it was heat related. So,the first thing I did was grab a small house fan and pointed it directly at the pier supply board. Sure enough the lines dissappear one by one in the exact opposite order they appeared. If I keep the fan there the lines stay away permanently and I can watch TV for any length of time. Removing the fan brings the lines back immediately. Now, I know I can buy a small cooling fan to prevent the lines. But does anyone know exactly whats going on here? And how to fix this without having to use a fan?

⟐ Answer edited September 24, 2023 at 7:11 MST

UN65NU6900FXZA: does open tv when it on

Fri, 18 Jul 2025 02:15:12 -0700

tv does not havc screen on

my tv does not open screen when it onmy tv does not open screen when it on

⟐ Commented July 18, 2025 at 2:15 MST

UN65NU6900FXZA: Power cycles on and of with screen light up and and dark simultaneousl

Sun, 30 Mar 2025 15:52:31 -0700

Why is when powered it cycles of and on. The screen lights up and goes of repeatedly. Model# UN75NU695OF

UN65NU6900FXZA: TV squeals when you try to turn it on..

Thu, 28 Dec 2023 21:07:02 -0700

It used to turn on when I would unplug and reset it.. not any more.

⟐ Commented December 28, 2023 at 21:07 MST

UN65NU6900FXZA: Samsung TV needs fix UN65NU7090

Tue, 22 Aug 2023 02:51:16 -0700

how can i fix my tv using the service menu to match the type model nunmber?

UN65NU6900FXZA: I got a picture but how do I fix the color?

Mon, 09 Jan 2023 03:21:23 -0700

I have a Samsung UN70NU6900 that had no picture. I got a picture by blocking traces on the cable of the TV. But, three quarters of the screens color isn't working correctly. Does anyone know how to go about fixing the color issue? It's a perfect picture that just needs the color fixed!

UN65NU6900FXZA: Thin Horizontal Line of Pixels Near Bottom of Samsung TV

Sun, 07 Feb 2021 11:17:06 -0700

Hello, I purchased a Samsung tv, model # UN65NU6900FXZA a little over a year ago. Just after the manufacturers warranty expired I started experiencing a thin horizontal line of pixels near the bottom of my tv screen disappear. I’ve confirmed with Samsung this is a hardware issues. Looking for guidance on what component might need to be replaced. Thank you.

PS: hockey game on since it has a white background for contrast. Ball looking object in bottom left is a part of the game. Only issue is one line of pixels.

⟐ Edited by author February 07, 2021 at 11:17 MST