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Samsung U28E510 Troubleshooting

This troubleshooting page will assist you in diagnosing issues with the Samsung 28" 4K Ultra HD Monitor. Model #LU28E510DS/ZA.

No Power With Direct Connection To Electrical Outlet Or Surge Protector

Faulty Power Source

First, make sure that your surge protector or UPS has power, you can test the surge protector or UPS by connecting it to another outlet. Make sure to plug the monitor power cord firmly into both the monitor and the surge protector or UPS. If this is unsuccessful, troubleshoot the power cord by replacing it with a known working cord. If the monitor powers on, replace the defective cord.

Blinking Power LED But No Images Appear On Screen

The blinking LED indicator says the monitor is on and yet no images are appearing on my screen.

Sleep Mode

The monitor could simply be in sleep mode. Depress the mouse or keyboard buttons to get out of sleep mode.

Incorrect Input Selected

Restart the monitor and use the job button to select the appropriate input. Ensure that your display cable is connected to both the monitor and your output device.

Damaged Display Cable

A damaged or dead display cable will not allow a signal to be sent from the device to the monitor. Double-check that your display settings on the output device are set for the correct output method (DisplayPort or HDMI), and use a different HDMI or DisplayPort cable that you know works on other devices. If you do not have access to a replacement display cable, turn the monitor off and remove the display cable. Test the current cable on other devices to confirm the functional status of the cable.

Outdated Display Driver

An older display driver can present compatibility issues between the graphics card and the monitor. Ensure that both your Samsung monitor drivers and graphics card drivers are up to date. Samsung updates can be found here.

Faulty Motherboard

Conduct a Samsung Monitor Self Test. If the test fails, your motherboard may be faulty. Follow this guide for instructions on how to replace your Samsung U28E510 motherboard.

Monitor Turns Off And On Repeatedly/Shuts Off

Monitor keeps turning on and off again and randomly shuts off.

Loose Power Cable

The power cable could be loose at either end of the cable. To fix this, the power cable should be plugged into the wall and monitor firmly.

Irregular Power Source

The actual power source could also be causing the issue. The power outlet should be checked by plugging in another device into the outlet. If the device receives power in intervals, then the problem is the outlet and the monitor should be plugged into a different outlet. If the monitor is still having these issues, then a Samsung Online Service Request should be made

Display Will Not Connect To The Correct Source Input

Auto Input Selected

Power on the monitor and click the button located on the back right corner, this will open up a menu on the bottom right corner of the screen. Jog the button upwards and select “menu.” Select “system” and change the source detection from “auto” to “manual” this will allow manual selection of the input source.

Screen Showing All White

Screen on LCD monitor is showing all white. This should be a pretty easy fix, otherwise the monitor needs service.

Issue with Connected Device Or Cable

Power the monitor off, then disconnect all external devices. Power the monitor back on. If a “weak or no signal” message is displayed, try connecting a different device using another cable.

If the white screen still shows after monitor is powered back on, either with no device connected or with a different external device, the monitor needs service.

Blurry, Fuzzy or Pixelated Images

Monitor is displaying fuzzy graphics or images.

To determine whether the monitor is the issue, power on the monitor if it isn’t already on. Press the JOG button on the bottom right corner of the monitor’s backside. Highlight “Menu” and press the JOG button again to select it. If the Menu looks clear, there are several things you can check.

Incorrect Resolution

Check the PC’s resolution. You can do so in the “Control Panel”. The maximum resolution of the monitor is 4K (3840x2160).

Incorrect Refresh Rate

Under Monitor Settings in the Control Panel, you can also check the refresh rate, which should be 60Hz for a 4K resolution.

Incompatible Input Cable

Check the cable by disconnecting it and reconnecting it securely to both the external device and the back of the monitor. The monitor may not support the best resolution if the cable being used is not the one that came with the components of the monitor. Try a different HDMI, HDMI to DVI or DP cable.

If none of the above resolves the issue, service is recommended by samsung. You can create an online service request [link].

Screen Refresh Rate Is Not 60 Hz

Screen refresh rate is less than 60 Hz, or does not go above 30 Hz.

Incompatible HDMI Port

To resolve this issue, connect an HDMI cable from the HDMI output on your device to the port labeled HDMI IN 2. If you are using a DP cable, then a DP cable is connected to the DP port located on the back of the monitor.

60 Hz screen refresh rate is supported by HDMI 2.0 or Displayport (DP) at 4K (3840x2160) resolution. All HDMI cables are compatible with the HDMI 2.0 standard. The HDMI IN 2 port located on the back of the monitor is the HDMI 2.0 compliant connection. The HDMI IN 1 port only supports up to 4K (3840x2160) @ 30 Hz.

Screen Resolution Does Not Adjust To 4K (3840x2160)

Screen resolution is limited to resolutions lower than 4K

Outdated Drivers Or Windows 10 Incompatibility

To resolve this issue, download and install the latest display driver for your monitor directly from the Samsung support website and ensure you are running the latest version of Windows.

The resolutions available may be limited due to display driver limitations or Windows limitations. Windows 10 was known to have display issues with 4K resolution but the issues have been corrected in recent builds to properly output higher resolutions.

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