How to change refresh rate on TV

Q: Can you change TV refresh rate?

This can be determined using the Info feature found on most HDTVs, which details information about the incoming feed. Change this to precisely 59.94 hertz at your source device if it allows it, again using the Options or Setup feature. Dedicated video processors allow this almost universally.

I've connected my laptop(Windows 10) with the TV using an HDMI cable. The resolution of the laptop is 3840x2160 and the refresh rate 60Hz.

Table of Contents Show

More Information
Need more help?
Refresh Rate Definition
Samsung HDTV Refresh Rate
Auto Motion Plus
Changing Auto Motion Plus Options
Can you change TV refresh rate?
How do I change the refresh rate on my smart TV?
How do you tell if your TV is 60Hz or 120Hz?

The TV's resolution is automatically set as 3840x2160 also, but the refresh rate shows 30Hz.

I cannot change the refresh rate to a higher rate, because the option is not available.

Now, when I change the resolution of the TV to 1920x1080, I'm able to change the refresh rate to 60Hz.

Why can't I put the resolution as 3840x2160 and the refresh rate at 60Hz for the TV? Does the issue have to do with the HDMI cable, or Windows?

My TV's max refresh rate is 120Hz. Supposedly I should get that option also, but it's not showing there.

asked Jun 15, 2019 at 15:09

Your display is Intel UHD Graphics 620 which can (quote):

Support for up to three independent displays via HDMI 1.4, DisplayPort (DP) 1.2, an Embedded DisplayPort (eDP) 1.4 interfaces.

Your display adapter can then only go up to HDMI 1.4, where I quote from Wikipedia:

HDMI 1.4 added support for 4096 × 2160 at 24 Hz, 3840 × 2160 at 24, 25, and 30 Hz, and 1920 × 1080 at 120 Hz.

This is why you have to choose between 4K resolution and refresh rate, but cannot have both at such high values.

There is no solution for this problem that does not include upgrading your display adapter.

answered Jun 15, 2019 at 15:27

harrymcharrymc

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Symptoms

On a computer that is running Windows 7 and newer versions of Windows, you cannot change the Screen refresh rate for certain monitors. Specifically, this behavior occurs on monitors that report a TV-compatible timing of 59.94Hz, but not 60Hz.

Cause

Certain monitors report a TV-compatibility timing of 59.94Hz. Therefore, Windows 7 and newer versions of Windows expose two frequencies, 59Hz and 60Hz, for every resolution that is supported at that timing. The 59Hz setting makes sure that a TV-compatible timing is always available for an application such as Windows Media Center. The 60Hz setting maintains compatibility for applications that expect 60Hz.

In Windows 7 and newer versions of Windows, when a user selects 60Hz, the OS stores a value of 59.94Hz. However, 59Hz is shown in the Screen refresh rate inControl Panel, even though the user selected 60Hz.

Resolution

No action is needed.

This behavior is by design for monitors and TVs that report only 59.94Hz but not 60Hz. Both 59Hz and 60Hz are translated to 59.94Hz before these values are sent to the driver. Therefore, the display is identical at 59Hz and 60Hz.

This KB article describes the case in which a monitor or TV reports 59.94Hz. However, this issue also occurs for monitors or TVs that report the following TV-compatible timings:

23.976Hz, but not 24Hz
29.970Hz, but not 30Hz
47.952Hz, but not 48Hz
71.928Hz, but not 72Hz
119.880Hz, but not 120Hz

More Information

Steps to reproduce the problem

Right-click the windows desktop, and then click Personalize.
Click Display.
Click Change display settings.
Click Advanced settings.
Click the Monitor tab and change Screen refresh rate from 59 Hertz to 60 Hertz.
Click Ok.
Return to Advanced settings.

The Monitor tab still shows 59 Hertz.

Need more help?

Film is typically shot at 24 frames per second, but it can be played back at 30 frames per second because of a process called 2-3 Pulldown, in which extra frames are added. This results in a juddering or blurring effect visible to the human eye. While many people prefer the not-perfect look of film, others enjoy the motion-smoothing effect of higher refresh rates. Refresh rates can be adjusted on Samsung HDTVs with Auto Motion Plus.

Refresh Rate Definition

A refresh rate is a measure of how often a TV changes the picture. The higher the refresh rate, the more pictures are displayed per second. A 60Hz refresh rate means that the television displays 60 frames per second and a 240Hz refresh rate means that the television displays 240 frames per second. According to "PC Magazine," the typical American television displays films shot at 29.97 frames per second by shuffling and combining the frames to match the 60 frames per second of the television.

Samsung HDTV Refresh Rate

Samsung's newer 120Hz LCD HDTVs are capable of showing refresh rates of 120 frames per second. These HDTVs are equipped with Auto Motion Plus, which provides a smooth frame transition for fast action programs. AMP creates and inserts new frames to smooth out judder, practically eliminate motion blur and enhance your viewing experience.

Auto Motion Plus

If you experience blurring or ghostlike images on your Samsung HDTV, you might be able to correct it with AMP. When set correctly it can correct blur or judder on your screen. However, when set incorrectly AMD can overcompensate, resulting in a disrupted show or movie. The proper settings will depend on the refresh rate of the film you are viewing, so you may have to try several settings to get the optimal rate for each movie.

Changing Auto Motion Plus Options

Auto Motion Plus options can be found in your television's menu under Picture Options. The Auto Motion Plus menu contains several options, including On, Off, Clear, Smooth and Standard. If changing your Auto Motion Plus options doesn't correct blur, call 1-800-SAMSUNG for Samsung support.

Can you change TV refresh rate?

This can be determined using the "Info" feature found on most HDTVs, which details information about the incoming feed. Change this to precisely 59.94 hertz at your source device if it allows it, again using the "Options" or "Setup" feature. Dedicated video processors allow this almost universally.

How do I change the refresh rate on my smart TV?

Click Display. Click Change display settings. Click Advanced settings. Click the Monitor tab and change Screen refresh rate from 59 Hertz to 60 Hertz.