iFixit - Answers With Device "UN55MU6290"

UN55MU6290: Why is my tv making popping noises recently

Mon, 21 Jul 2025 10:23:53 -0700

Recently my tv has made occasional popping sound is it fixable other stuff I know how to repair but have no idea about repairing my tv my self

⟐ Commented July 21, 2025 at 10:23 MST

UN55MU6290: Why do I have 2 black tinted lines on my tv?

Tue, 08 Jul 2025 17:13:17 -0700

Black tinted lines on my tv is there anyway to get rid of them?

⟐ Answer accepted July 08, 2025 at 17:13 MST

UN55MU6290: TV started misbehaving (see video below)

Sun, 09 Jun 2024 19:44:09 -0700

TV is useless the image fades out all the time, see video below. is there anything I can do about it?

⟐ Commented June 09, 2024 at 19:44 MST

UN55MU6290: Tv wont turn on no standby light, clicking sound on power board

Thu, 22 Jan 2026 17:17:39 -0700

Samsung model un55mu6290f had power outage and now tv wont turn on. i tested the volts coming out of the power board to the display board and everything looked good, fuse is good, capacitors look good. but when it is plugged in to each other there is little ticking sound. not sure if that is why its not turning on.. but if it can be fixed that would be great! any insight helps!!! thank you!!!!

Video of it at https://youtu.be/KJEBOaOtBtI

⟐ Answer edited January 22, 2026 at 17:17 MST

UN55MU6290: Samsung TV turns on and makes a noise but won’t turn on.

Mon, 20 May 2024 20:00:49 -0700

I have a 2012 Samsung UN32EH4003V.

The TV will successfully connect to power and try to turn itself on but it does not fully work. It will flash a VERY fast message saying ‘component’ & ‘no time’. It will then make a noise that sounds like a start up noise and the red light blinks.

I can’t find anyone else having this issue and I don’t know what to do.

⟐ Answer accepted May 20, 2024 at 20:00 MST

UN55MU6290: TV wont turn on no standby light

Tue, 30 Jan 2024 07:30:29 -0700

My Samsung TV won't turn on its actually the un55mu6300 no standby light I replaced the power board and the main board and it still won't power on. This happened after a thunderstorm power outage. Anyone? If not power board or main board what can it be. Also the backlight turns on when the main board is disconnected from powersupply

⟐ Commented January 30, 2024 at 7:30 MST

UN55MU6290: I tore a tab that is connected at the bottom portion of the TV

Thu, 12 Oct 2023 04:05:57 -0700

While performing a repair on a Samsung TV I had torn one of the yellowish flaps as shown above from this stock image I found online. I put the TV together only for there to be a huge vertical black bar where the tear occurred. I was wondering if their was a means of repairing this issue that wouldn’t require me to throw away the TV.

⟐ Commented October 12, 2023 at 4:05 MST

UN55MU6290: Power supply fuse keeps blowing

Mon, 28 Aug 2023 19:51:48 -0700

Hello,

We have a 4 year old UN55MU6290 Samsung TV. Last week while it was on it made a pop sound and turn off. Once I had a bit of time over the weekend I opened it up to have a look.

First I did a visual inspection and didn’t find any component damaged or burnt (neither on the power supply nor on the main board). I took a multimeter and first thing I checked the fuse: open circuite.

I thought easy enough… I ordered a package of matching fuses (T5AH250V). The fuses arrived today. I replaced the fuse reassembled the TV plugged it in and… it didn’t work.

I open up the TV again checked again the fuse I had just installed and… it had blown.

I then replaced the fuse again. This time I did not reconnect the neither main board nor the backlight to power supply board and I powered it up with the TV open.

The fuse blow again as soon as I plugged in the power. So for sure there is something wrong with the power supply board. It burns the fuse as soon as powered up even if disconnected from the rest of the TV.

Now I can order a new power supply board (BN44-00807K) for cheap. The question now is how can I check that there is nothing wrong with the backlight or the main board that cause the damage to the power supply board and will damage the new power supply board the same way?

⟐ Commented August 28, 2023 at 19:51 MST

UN55MU6290: Samsung TV dead, no standby light un65mu8000 NOT ABOVE LISTED TV

Thu, 12 Jan 2023 17:39:56 -0700

Hi. after combing the diy sites, here is what I’ve come up with. I have Power board BN44-00912A AND MAIN BOARD BN94-12295K.

When I unplug the main board from power board the Back lights WORK. There are 2 cables running from power board to main board.

I replaced the mainboard but this didn’t fix anything (might be DOA but not sure)

I have checked power on the power supply board but there is no pin that is clearly marked STANDBY to look for the 3.3 or 5v.

There are 20 pins on CNM803. The first 5 are GND. The next few are VAMP (not sure what this stands for).

Then they pin out like this:

OD_LEVEL,

FAIL_COUNT

OD_ON/OFF

BLU_ON_OFF

POWER ON/OFF - (i checked this its at 4.5v)

PINS 11-17 A13V PINS 18-20 GND

⟐ Commented January 12, 2023 at 17:39 MST

UN55MU6290: TV will not turn on, no standby light

Thu, 22 Jan 2026 17:19:10 -0700

My samsung UN49MU6290 TV will not power on and will not show a standby light. I replaced both the power board and the main board. When I disconnect the cable going from the power board to the main board then the backlights will turn on. I checked the voltage from the power supply and the chart says it needs to be 12V and when I have it disconnected from the main board it will show the correct 12v but when I have it connected to the main board it shows 9v. I am not sure what to do next.

⟐ Answer edited January 22, 2026 at 17:19 MST

UN55MU6290: What does this mean

Mon, 15 Aug 2022 16:16:09 -0700

Smart curved tv has a purple patch in the middle, appear while tv was working fine, have unplugged and plugged again. The Smart Tv logo pops out clearly and starts to discolor with purple, can it be fixed.?

⟐ Commented August 15, 2022 at 16:16 MST

UN55MU6290: I see a small cloud of water on the bottom

Sat, 16 Apr 2022 14:59:27 -0700

So i saw that my screen was very dirty so i took a water spray and a cloth and just went around the screen, i made sure not to let any go inside from the bottom and what not but when i turned it off and came back to it 2 minutes later there is a small cloud of water in the bottom center of the screen just sitting there, i unplugged it and left it there now. Is my tv set to be dead now? or is there still hope for it

⟐ Answered April 16, 2022 at 14:59 MST

UN55MU6290: There's a dead zone on the top of my screen

Tue, 30 Nov 2021 04:55:04 -0700

The screen is flickering and There's a dead zone on the top of my screen

⟐ Commented November 30, 2021 at 4:55 MST

UN55MU6290: red pixel line tv

Sun, 31 Oct 2021 07:41:30 -0700

Dear all,

After many years of use, my TV is showing up a red line on the screen. I’ve red many topics about it and espically about the ribbon cable. However, it seems like this isnt making any difference. I’ve tried to swap the 2 ribbon cables at the bottom, to find out if they were responsible of this problem. Tried to re-seat every ribbon cable along side the screen as well. My TV is UE55JU6570U from Samsung. If you have any ideas on how to solve this issue, it will be really appreciated. Thanks :)

⟐ Answer edited October 31, 2021 at 7:41 MST

UN55MU6290: What hardware causes inverted color with the picture?

Wed, 26 May 2021 17:20:55 -0700

I ran all the troubleshooting with this tv with Samsung Support. No good. The LEDs are fine, but the color is inverted with a strong white cast to it. Is this a power board problem? What hardware part is needed to repair this issue?

UN55MU6290: Un55not fully powering on.

Mon, 24 May 2021 19:37:31 -0700

UN55MU6300F samsung smart tv. When I turn it on it shows the Smart TV insignia and then the screen goes black. Doesn't fully turn on past that. Even after I press the home button.

UN55MU6290: Fuses blow. Is it ALWAYS an issue on power board.

Mon, 12 Apr 2021 09:10:11 -0700

51 inch Samsung suddenly went dark. Replaced bad ceramic slow-blow fuse, plugged in and new fuse immediately blew. Front and back of power board reveal no visible damage. Don't consider myself qualified to track down and replace individual component, but willing to replace entire power board. Therefore, my question is: is the underlying problem causing blown fuses almost always on the power board? Itll be a $100 wasted effort, if not.

⟐ Answered April 12, 2021 at 9:10 MST

UN55MU6290: Standby light blinking. Tv will not turn on.

Sun, 07 Feb 2021 08:11:08 -0700

tv just shut off randomly. No power surge. Standby light continuously blinking and tv screen will not turn on. Lightly tapped the screen and seems as tv is off.

possibly picture of the problem with connection

⟐ Answer accepted February 07, 2021 at 8:11 MST

UN55MU6290: Remote Control Volume Occasionally Not Responding

Mon, 26 Oct 2020 13:04:41 -0700

I have been noticing that my tv remote is unable to control the volume on the tv. Let’s say that when it was working, the volume was at 30. When it is not working, I am only able to go up to 31, and holding volume keeps the number flickering at 31. Going down to 29 does the same thing. I have found that restarting the television temporarily fixes it, although after the most recent occurance I fully unplugged it and it is working for now, but I am worried it will happen again.

I have done nothing to damage either the tv or remote either so I don’t understand what could be causing this to happen, or even whether it is an issue with the tv or remote.

UN55MU6290: Samsung curved TV has one black line alsovisible when TV is switch off

Fri, 02 Oct 2020 11:13:02 -0700

Hello guys,

my curved LCD Smart TV (UE55KU6652U Series 6) started to have one thick black line over a half of the screen. This line is also visible when the TV is switched off. Do you think TV screen is cracked or is it any component that can be repaired?

Thank you,

L.P.

⟐ Answer accepted October 02, 2020 at 11:13 MST