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HD 720p LED TV - 28" Class (27.5" Diag)

  • 28LJ400B-PU

Key Features

  • HD Display
  • HDMI
  • LED Backlighting


HDMI (High Definition Multimedia Interface) offers incredible audio/video quality and single-cable convenience. This monitor includes an HDMI input, so you can connect a true high-definition source, such as a high-end computer, Blu-ray player or next-generation videogame console.

LED Backlighting

LED Backlighting

LG’s LED backlighitng delivers exceptional brightness and amazing image clarity. You'll see richer colors and deeper blacks too, and LEDs offer greater energy efficiency compared to conventional LCD monitors.

Resolution HD (1,366 x 768)
Refresh Rate 60Hz
Color Master Engine Yes
Speaker System 2 Channel
Output Power 20W
Mono / Stereo / Dual (MTS/SAP) Yes
RF In (Antenna/Cable) 1
Composite In 1
Component In 1
Power Supply (Voltage, Hz) AC 120 V ~ 60 Hz
Power Consumption TBD
Standby Mode 0.5W
Wall Mount (WxHxD) 28.7" x 17.2" x 3.1"
W Stand (WxHxD) 28.7" x 18.7" x 7.2"
Shipping (WxHxD) 31.8" x 20.2" x 5.6"
TV Without Stand 10.8 lbs
W Stand Weight 11.0 lbs
Shipping Weight 16.1 lbs
UPC 719192608511

What People Are Saying

Rated 5 out of 5 by from Great picture I bought this a little less than a month ago. It was out of necessity at the time, my older and heavier TV had died, and I need my TV! I was limited on what size I could get, since it rests on my TV Stand, and it is in a small room. So thankful that the size that I wanted was available. The picture is great, no longer need a conversion box and just one remote handles the TV.
Date published: 2018-02-19
Rated 5 out of 5 by from Good choice for a small TV! I bought this TV to replace one in the kitchen. The picture, sound, and adjustments are outstanding. My only issue was in the initial setup when it was not made clear that a voice assistant would be a default setting. In order to silence that obnoxious, loud voice I, eventually, figured out that I had to re-initiate the setup procedure. It would have been helpful if that option had been explained in the setup guide or would have been an option in the sound menu.
Date published: 2018-02-18
Rated 5 out of 5 by from Excellent Product This is exactly what I was looking for. Easy to handle, clear precise picture quality, all at an affordable price.
Date published: 2018-02-18
Rated 5 out of 5 by from Perfect size for the room Was a Xmas gift and he loves it. Perfect size and great picture
Date published: 2018-02-17
Rated 5 out of 5 by from Perfect Fit! I had been looking for a nice size television to put in my home office. It truly is a perfect fit. The picture quality and clarity are sharp and precise. My husband is actually jealous and now wants one of his own. It's amazing how light it is and easy to handle. It was totally easy to set up. I was able to start watching it immediately! Thanks such a great product!
Date published: 2018-02-17
Rated 3 out of 5 by from Good picture but terrible sound We replaced an old TV which limited the size of the new monitor. While the picture is sharp, the sound is terrible. My wife and I feel that we are getting an echo. We also had to purchase a switcher box so that both the DVD and WII could be hooked up simultaneously.
Date published: 2018-02-15
Rated 5 out of 5 by from A good TV This bought as a replacement for an aging CRTV that burned out.The picture is very clear and bright.The size of the screen is just right.
Date published: 2018-02-15
Rated 5 out of 5 by from I love my LG.It is so clear ,the color so vibrant .So many choices in the menu.I can't wait to turn on and watch
Date published: 2018-02-15
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We're here to support you with our product.

View 28LJ400B-PU Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

Is there a screen mirroring feature on this TV? And if so how do I turn it on / use ot

Asked by: 1050
Hello, the 28LJ400B-PU does not have that feature. ^AC
Answered by: Amber C
Date published: 2018-02-15

Does the TV have a digital QAM tuner? The cable TV service provider that I use has some channels that can be seen without the use of a set top box. I can see these channels by connecting the coax cable directly to a QAM capable TV set.

Asked by: zzap
A 64 & 256 QAM tuner is one of three built-in tuners in this LG HD 720p LED TV - 28" Class (27.5" Diag), Model # 28LJ400B. The other two built-in tuners are an ATSC tuner and an NTSC-M tuner...^IFV
Answered by: LGJoel
Date published: 2018-02-15

How to I disable to voice announcement option, ie"channel 9" ?

Asked by: Earthma
In the settings menu for your LG HD 720p LED TV - 28" Class (27.5" Diag), Model # 28LJ400B, navigate to (Settings) > Accessibility > Audio Guidance and set it to off. You can find these instructions on page 12 in your owner's manual under 'To Use Audio Guidance'...^IFV
Answered by: LGJoel
Date published: 2018-01-31

can I connect a sound base to the 28LJ400B? I don't see ARC. Will it accept an optical cable?

Asked by: goodskate
Regrettably, the LG HD 720p LED TV - 28" Class (27.5" Diag), Model # 28LJ400B-PU only has inputs on it. It does not have any Audio Outputs on it that you can use to connect to a Sound Bar or other external Audio Systems and it does not have an HDMI ARC port nor an Optical Digital Output either...^IFV
Answered by: LGJoel
Date published: 2018-01-30

Is the bezel and stand a gloss or flat black finish?

Asked by: Njtech2
The bezel is glossy, and the stands(there are two) are a matte finish.
Answered by: El Reno
Date published: 2018-01-02

Does this tv have a digital tuner?

Asked by: Gypsy Rose Lee
Yes it does 
Answered by: motionx1
Date published: 2017-12-23

Can I hook up a DVD player to this tv, and How do I hook up a DVD player to this tv?

Asked by: Chelsea77
For assistance connecting external devices to your TV, please refer to the following help library article: If you are in need of any assistance, have additional questions, or would just like to see our helpful tips, check us out on Twitter @LGUSSupport ^CP
Answered by: ChrisPSM
Date published: 2017-12-19

Is there a headphone jack?  How can I connect Bluetooth headphones to this tv?

Asked by: jdun
The 28LJ400B-PU does not have a headphone jack nor does it have the capability for bluetooth connection. ^CP
Answered by: ChrisPSM
Date published: 2017-12-07
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