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Reviewed on Jul 08, 2016

LG LH5750
TV REVIEW

Usage Ratings - Version 1.0
6.6
Mixed Usage
Value for price beaten by
: Not at the latest test bench
6.3
Movies
6.7
TV Shows
6.7
Sports
7.3
Video Games
5.5
HDR Movies
4.5
HDR Gaming
5.7
PC Monitor
Type : LED
Resolution : 1080p
Refresh Rate : 60 Hz

The LG 55LH5750 LED TV offers an average picture quality for movies and TV shows, however sports fans won't be impressed by the average motion performance and bad screen uniformity. The easy to use smart interface is a strength which will appeal to a broad audience.

Test Results
Design 8.5
Picture Quality 6.8
Motion 6.0
Inputs 7.5
Sound Quality 6.2
Smart Features 8.5
Pros
  • Excellent smart platform
  • Provides decent living room performance thanks to the brightness and reflections
Cons
  • Dirty screen effect very visible when watching sports
  • Narrow viewing angle
  • Above average motion blur

Check Price

8.5

Design

Curved : No

The 55LH5750 looks similar to other competing TVs, such as the TCL FS3750. The all plastic body and stand make it look low-end, but it is quite thin which is good.

Stand

The stand is as wide as the TV itself, so requires a large table. It is made of plastic and similar to other low-end LG TVs such as the LF5800.

Footprint of the 55" TV stand: 45.6" x 9.3"

Back
Wall Mount : VESA 400x400

The back is quite bulky. Rear inputs may be inaccessible or hard to reach when wall mounted.

Borders
Borders : 0.67" (1.7 cm)

Borders are average thickness and made of plastic.

Thickness
Max Thickness : 2.04" (5.2 cm)

Compared to other cheap TVs, the LH5750 is quite thin. This is would be an advantage for wall mounting if the inputs were more accessible.

6.8

Picture Quality

Watching Blu-rays and DVDs on the LG LH5750 will be great in a dark room, because of the good contrast ratio and good black uniformity. Unfortunately, the color spectrum that it can display isn't that great and those sensitive to judder might notice it when watching movies on streaming service and cable.

8.9 Contrast
Native Contrast
:
5453 : 1

The VA panel used in this TV offers a great native contrast ratio. The blacks are really deep and will result in a really good picture quality, especially in a dark room. The 55LH5750 it one of the few LG TVs that use a VA panel.

0 Local Dimming
Local Dimming
:
No
Backlight
:
Direct

There is no local dimming option for this specific model. The video is shown only for reference.

7.1 SDR Peak Brightness
SDR Real Scene Peak Brightness
:
278 cd/m2
SDR Peak 2% Window
:
297 cd/m2
SDR Peak 10% Window
:
297 cd/m2
SDR Peak 25% Window
:
297 cd/m2
SDR Peak 50% Window
:
297 cd/m2
SDR Peak 100% Window
:
297 cd/m2
SDR Sustained 2% Window
:
297 cd/m2
SDR Sustained 10% Window
:
297 cd/m2
SDR Sustained 25% Window
:
297 cd/m2
SDR Sustained 50% Window
:
297 cd/m2
SDR Sustained 100% Window
:
297 cd/m2

At 297 cd/m², the brightness of this TV makes it an average performer. Since there is no local dimming option on this set, brightness remains same across all the different % size windows. One advantage is that whatever image is shown on screen, the brightness will remain the same.

N/A HDR Peak Brightness
HDR Real Scene Peak Brightness
:
N/A
HDR Peak 2% Window
:
N/A
HDR Peak 10% Window
:
N/A
HDR Peak 25% Window
:
N/A
HDR Peak 50% Window
:
N/A
HDR Peak 100% Window
:
N/A
HDR Sustained 2% Window
:
N/A
HDR Sustained 10% Window
:
N/A
HDR Sustained 25% Window
:
N/A
HDR Sustained 50% Window
:
N/A
HDR Sustained 100% Window
:
N/A

This TV does not support HDR.

5.4 Gray Uniformity
50% Std. Dev.
:
4.079 %
50% DSE
:
0.287 %

The gray uniformity of the LG LH5750 is very bad. You can almost see the position of each LED of the backlight. Dirty screen effect will definitely be present when watching sport or any other content where large areas of uniform color are present on screen.

4.2 Viewing Angle
LCD Type
:
VA
Color Shift
:
20 °
Brightness
:
30 °
Black Level
:
17 °

The 55LH5750 TV offers an average off axis viewing performance with a loss of color saturation typical of VA panels. Some TVs using VA panel have marginally better performance (like the TCL US5800), but even then, it is far from what you will get with an IPS or an OLED TV.

Update: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results.

9.7 Black Uniformity
Native Std. Dev.
:
0.591 %

The black uniformity is pretty good on this TV. On our unit, there isn't really any issues like clouding or flash lighting.

8.5 Gradient
Color Depth
:
8 Bit

The 8 bit gradations can be seen, but does not suffer from any obvious banding problem in any specific color.

8.2 Pre Calibration
White Balance dE
:
3.56
Color dE
:
2.7444
Gamma
:
2

Out of the box, the pre-calibration of the LG LH5750 was decent. There was very little issues with the white balance dE as well as the color dE.

9.4 Post Calibration
White Balance dE
:
0.51
Color dE
:
1.6396
Gamma
:
2.19

The calibration of the LG LH5750 was done with ease. Since LG has a 21 point system rather than other TVs 10 points, issues could be resolved precisely.

8.0 480p Input

DVDs looks good without any upscaling problems.

8.0 720p Input

The LG LH5750 can upscale cable channels without losing any detail of the original content.

10 1080p Input

Blu-rays looks good and pretty sharp.

0 4k Input

6.9 Color Gamut
Wide Color Gamut
:
No
DCI P3 xy
:
75.58 %
DCI P3 uv
:
82.47 %
Rec 2020 xy
:
54.70 %
Rec 2020 uv
:
62.92 %

Changing the 'Color Gamut' to extended allows for a wider gamut. Unfortunately this will still only be enough for Rec. 709 content.

5.5 Color Volume
Normalized DCI P3 Coverage
:
61.675 %
10,000 cd/m² DCI P3 Coverage
:
36.517 %
Normalized Rec 2020 Coverage
:
45.096 %
10,000 cd/m² Rec 2020 Coverage
:
26.734 %

10 Image Retention
IR after 0 min recovery
:
0.000 %
IR after 2 min recovery
:
0.000 %
IR after 4 min recovery
:
0.000 %
IR after 6 min recovery
:
0.000 %
IR after 8 min recovery
:
0.000 %
IR after 10 min recovery
:
0.000 %

The LG LH5750 does not have any image retention at all. Like many others VA TVs tested before, image displayed for a long period do not get imprinted on screen. This is good for people who play video games for long period on their main TV or want to use it as a PC monitor.

7.5 Reflections
Reflection
:
1.9 %
Screen Finish
:
Semi-gloss

Reflections are large and diffused on the semi-gloss screen. This helps to reduce the intensity of small lights.

0 3D
3D
:
No
3D Type
:
No
2D to 3D
:
No

This TV doesn't support 3D.

Pixels
6.0

Motion

The LG 55LH5750 is quite average when it comes to handling sports. Fast moving objects on the field, such as a football being thrown, will look blurrier than most average TVs. Also, while panning shots occur over a field, you will notice a huge amount of screen uniformity issues.

6.7 Motion Blur
Response Time
:
24.1 ms
Overshoot
:
0.0 ms

The response time of this TV is quite average, there are many transition that take longer than most average TVs. As a result there is a long trail that can be seen following the Rtings logo. This will be most noticeable during fast game plays.

2.8 Image Flicker
PWM Dimming Frequency
:
120 Hz
BFI
:
No
BFI Frequency
:
120 Hz
BFI In Game Mode
:
No

7.1 24p Playback
Judder-free 24p
:
Yes
Judder-free 24p via 60p
:
No
Judder-free 24p via 60i
:
No

The LG is judder-free only when playing 24p content from a 24Hz source. Judder is present on 24p content over a 60Hz signal.

0 Motion Interpolation
Motion Interpolation (30 fps)
:
No
Motion Interpolation (60 fps)
:
No

There is no motion interpolation on this TV.

7.5

Inputs

The LH5750 is not the best TV for gamers because of the average motion blur, despite the pretty decent input lag. Those looking to use this TV as a PC monitor should look for another option, since it does not support any of the resolutions tested.

8.4 Input Lag
1080p @ 60Hz
:
30.0 ms
1080p With Interpolation
:
N/A
1080p @ 60Hz Outside Game Mode
:
30.0 ms
1080p @ 60Hz @ 4:4:4
:
30 ms
4k @ 60Hz
:
N/A
4k @ 60Hz @ 4:4:4
:
N/A
4k @ 60Hz + HDR
:
N/A
4k @ 60Hz @ 4:4:4 + 8 bit HDR
:
N/A

The input lag varies a little bit between each handshakes but in the end, we were still able to get a good value and it was the same across all the different image settings. Changing the setting to game mode did not improve the input lag.

2.0 Supported Resolutions
1080p @ 60Hz @ 4:4:4
:
Yes
1080p @ 120Hz
:
No
4k @ 30Hz @ 4:4:4
:
No
4k @ 60Hz
:
No
4k @ 60Hz @ 4:4:4
:
No

The LH5750 does support chroma 4:4:4 when the input is labeled as PC and since it only a 1080p TV, 4k is not supported.

Side Inputs
Rear Inputs
Total Inputs
HDMI : 2
USB : 1
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 0
Component In : 1 (shared)
Composite In : 1 (shared)
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 1
SD/SDHC : 0

Inputs Specifications
HDR10
:
No
Dolby Vision
:
No
5.1 Passthrough ARC Dolby Digital
:
Yes
5.1 Passthrough ARC DTS
:
Yes
5.1 Passthrough Optical Dolby Digital
:
Yes
5.1 Passthrough Optical DTS
:
Yes
HDMI 2.0 Full Bandwidth : No
ARC : Yes (HDMI 1)
USB 3 : No
HDCP 2.2 : Yes
CEC : Yes
MHL : No
Variable Analog Audio Out : No

6.2

Sound Quality

The sound performance of the LH5750 is quite average, and should be OK for those who don't want to use an external system. Even a cheap sound bar would be an improvement for those who care a bit more about the audio quality.

Note: Sound Quality test for TVs reviewed before 2017 was performed at 75dB, 85dB, and Max SPL. Starting 2017, the target SPL levels have been changed to 70dB, 80dB, and Max dB SPL.

6.2 Frequency Response
Std. Dev. @ 70
:
4.94 dB SPL
Std. Dev. @ 80
:
5.72 dB SPL
Std. Dev. @ Max
:
6.66 dB SPL
Max
:
85.3 dB SPL
Low-end Cutoff
:
95.14 Hz

Decent low-end cutoff for a TV, however, the overall response is about average. Also, there are pumping and compression artifact under heavy load, even though this TV doesn't get very loud.

6.3 Total Harmonic Distortion
Distortion @ 70
:
0.028
Distortion @ 80
:
0.058
Distortion @ Max
:
0.042

Average distortion performance. The overall amount of harmonic distortion at is decent under very light load, however, there is a rise in harmonic distortion as the volume is increased.

8.5

Smart Features

Smart OS : WebOS 3.0

Just like the LG E6 we have reviewed, the LG 55LH5750 also comes loaded with the newly released WebOS 3.0. This means that you can expect a very smooth and responsive smart interface, that doesn't lack applications whatsoever. You can also expect frequent updates and bug fixes. That is all great, but there are still a few flaws, one being the remote and the other being the lack of inputs on this TV. The remote is very basic and quite uncomfortable. The buttons on the remote require some power to press and the IR sensor lacks. In terms of the inputs, the TV only has two HDMI ports,  one only being accessible if you were to wall mount it. You can fix this issue by getting a HDMI switch.

Apps

Just like the LG E6, this TV also doesn't lack applications. It has the most demanded applications such as Youtube, Netflix, and Amazon Video. There is a whole list that you can chose from in the 'LG Content Store'.

0 Ads
Ad-free
:
No
Opt-out
:
No

TV Controls

A single button for control is located under the LG logo in the center of the TV.

Remote
Remote : Basic

The remote of the LG LH5750 is pretty basic, offering some operations that makes navigating through the smart interface somewhat easier. The remote is made of plastic, and has finicky buttons that just feel unconformable. Also, the IR sensor on the remote itself lacks, pointing right at the TVs sensor is a must. This remote doesn't come with LGs magic remote functionality.

In The Box

  • Remote
  • Batteries
  • Cable management strap
  • Stand attachment
  • Manual

Misc
Power Consumption : 35 W
Power Consumption (Max) : 83 W
Firmware : 03.00.27

Differences between Sizes and Variants

We tested the 55" (55LH5750), the only size available at the moment. There is also a variant called 55LH575A that we expect to have the same picture quality.

If someone comes across a different type of panel or if their LG 55LH5750 doesn't correspond to our review, let us know and we will update the review.

Size Model
55" 55LH5750

Compared to other TVs

Top left: TCL FS3750 (48FS3750). Bottom left: Vizio D Series 1080p 2016 (D50-D1). Middle: LG LH5750 (55LH5750). Top right: Samsung KU6300 (UN55KU6300). Bottom right: TCL US5800 (55US5800).  Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The LH5750 is very cheap for an LG TV, however this shows in the lack of features and average performance. In a market segment dominated by TCL and Vizio, these budget brands provide better performance for the same price as the LH5750.

Conclusion
SEE PRICE
Amazon.com

6.6 Mixed Usage
The LG LH5750 would probably be fine for most people that are shopping for a budget TV. It is not ideal for any usage, but instead provides consistent all-round performance which is average or below. Only supporting 2 HDMI ports will be an issue for many people, and the bad uniformity will disappoint sports fans.

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