How to Troubleshoot a Dell Desktop Monitor


How to Troubleshoot a Dell Desktop Monitor



This article provides information about how to identify and resolve the various issues that you can have with a Dell Desktop Monitor.


Table of Contents:

  1. Are you having issues with your Dell Desktop Monitor?
  2. Monitor Not Powering On
  3. Buttons on Monitor do not work
  4. The Monitor is overheating and shutting off
  5. The Monitor is making an Abnormal noise
  6. There is a Monitor Display Fault
  7. Is your Monitor covered under your Warranty?
  8. The Information that you will need to log a service call

Are you having issues with your Dell Desktop Monitor?

If you are experiencing any of the issues that are listed below, please go to the appropriate guide in the sections below:


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Monitor Not Powering On

Note: If you have a flat panel screen with a white or blue PLED, then you should be looking for an LCD or Flat panel troubleshooting article.
  1. Is there any damage to the Monitor? If so, it will not be covered under warranty, and you will need to purchase a replacement Monitor. If not please proceed.

  2. Is the Monitor Power LED (PLED) on? If so what color is it?

    1. A Green PLED means that the monitor is getting power and a signal from the computer. Go to section 6 step 3.

    2. An Amber PLED means that the monitor is getting power but is not getting a signal from the computer. Go to section 6 step 3.

    3. No PLED means that the monitor is not getting power. Proceed with the next step.

  3. Is the PLED on your computer on?

    1. If so swap the Power Cord on your monitor with the Cord plugged into your computer, does the monitor now give a PLED? If not we can rule out everything external to your Monitor. You will need to contact your Technical support about a replacement if the Monitor is still under warranty.

    2. If not, check if you are getting power from other power sockets in the same location. If so move the devices to those sockets and test? You need to confirm that the issue is not a general power outage. Or an issue with the power sockets you have the Power Cords plugged to, before you can take this further.


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Buttons on Monitor do not work

  1. Is there any damage to the Buttons? If so it will not be covered under warranty, and you will need to purchase a replacement Monitor. If not please proceed.

  2. Are the buttons not working when pressed or are they physically stuck so that they cannot be operated?

    1. If the buttons are not working when pressed, Please disconnect all cables other than the Power Cord and try the following:

      1. For monitors manufactured before 2009, press and hold the menu select button. If the menu comes up - reset the factory defaults and test if this resolves your problem? If not then you will want to contact your technical support to take this further.

      2. For monitors manufactured between 2009 and March 2016, press and hold buttons1 and 4 simultaneously for two (2) seconds. If self-diagnostics appear, run them and reset the monitor to defaults if they pass. If not then contact your technical support with the error and troubleshooting done.

      3. For monitors manufactured after March 2016, press and hold button1 for five (5) seconds. If self-diagnostics appear, run them and reset the monitor to defaults if they pass. If not then contact your technical support with the error and troubleshooting done.

    2. If the buttons are stuck, then you are going to need to contact your Technical Support about a replacement if the Monitor is still under warranty.


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The Monitor is overheating and shutting off

  1. Is the monitor shutting down in use?

    1. If it does, disconnect all cables other than the Power Cord and advise if the issue continues when it is not plugged to the PC? If it does not, then replace the cables and test if the issue returns. If it does, then contact your Technical Support to see if you are covered for a replacement.

    2. If it does not, have you checked for any external environmental issue or if any power save modes has been configured? Is the Monitor powered off when not in use? Is there sufficient airflow around the Monitor when in use? Is the location having issues with heat that might affect the equipment that is used in that area? I would advise contacting your Technical Support to go over this with you.

  2. Is the screen warmer than an identical Monitor that has been on for the same amount of time? Is the monitor too hot to touch? If so please contact your Technical Support to confirm if your eligible for a replacement. If not, it would be considered to still be working ok.


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The Monitor is making an Abnormal noise

  1. Is there any damage to the Monitor? If so it will not be covered under warranty, and you will need to purchase a replacement Monitor. If not please proceed.

  2. Isolate the Monitor from the computer by disconnecting all cables other than the Power cord and test does the noise continue?

    1. If it continues, go to section 5 step 3.

    2. If it does not, troubleshoot the system instead and you can find a guide for that on the link below:

  3. Is the noise louder and different to the noise an identical Monitor makes?

    1. If it is, then contact your Technical Support to check if you are covered for a replacement.

    2. If it is not, then it would be considered to still be working ok.


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There is a Monitor Display Fault

  1. Is there any damage to the Monitor? If so it will not be covered under warranty, and you will need to purchase a replacement Monitor. If not please proceed.

  2. Disconnect all cables other than the Power Cord and try the following:

    1. For monitors manufactured before 2009, press and hold the menu select button. If the menu comes up - reset the factory defaults and test if this resolves your problem? If not then you will want to contact your technical support to take this further.

    2. For monitors manufactured between 2009 and March 2016, press and hold buttons1 and 4 simultaneously for two (2) seconds. If self-diagnostics appear, run them and reset the monitor to defaults if they pass. If not then contact your technical support with the error and troubleshooting done.

    3. For monitors manufactured after March 2016, press and hold button1 for five (5) seconds. If self-diagnostics appear, run them and reset the monitor to defaults if they pass. If not then contact your technical support with the error and troubleshooting done.

    4. If the self-test passes, swap out your Video cable and test if the issue is resolved. If so contact your technical support for a replacement cable if you are still in warranty. If it is still showing the same issue, proceed with next step.

Display Faults are issues like Lines, Distortions, Occlusions, and No Displays.

  1. Plug your Monitor to another PC, one that is known to be working fine with its own Monitor. Does your Monitor work ok when plugged to that PC?

    1. If so, then you will need to troubleshoot a No Post/No Video Issue with your PC. You can find a Guide on the link below. Your Monitor is fine.

    2. If not then you will need to contact your technical support to check if you are covered for a replacement Monitor.


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Is your Monitor covered under your Warranty?

Monitors are now sold with 3 years warranty as standard. If your Monitor is under 3 years old, it will automatically be in warranty as that is now the shortest possible warranty period.

Monitors that are purchased in a bundle with a PC take on the warranty of that PC. They can be covered for up to 5 years, as long as the PC is in warranty.

Note: If your Monitor was purchased with a system, you will need to supply the service tag of the PC it was bought with. Or the order number it was bought under - before we can replace against the longer warranty.

You can tell how old your monitor is by looking at the manufacturing date on the back of the Monitor itself.

Note: All Dell's stock is rotated and kept to a minimum. So every Monitor should be aged within a couple of months at most of their delivery date.


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The Information that you will need to log a service call

The majority of Monitors do not have an individual Service Tag.

You will need the Monitor serial number. Monitors have a Serial number which has a specific format:

  • 2 letters with a dash
  • A mix of 6 letters and numbers
  • A dash and 5 numbers
  • 3 letters and numbers
  • Another dash and then 4 letters and numbers
  • Followed by a dash with a revision number

XX-XXXXXX-XXXXX-XXX-XXXX-A0X

(Fig.1 Serial Number Label)

You will need either the Order Number the monitor was purchased against or you will need the Service Tag of the PC is was bought with.

Note: It is up to you to have this information, we cannot supply it for you.

You will need to be able to confirm the account details the Monitor is registered against.

i.e. Company/Organisation name, Shipping Address or any other information registered against the order.

You will need to be able to go through the troubleshooting that was done and the results you got.

With this information, a Technical Agent can log a case for you. They will go through whether there are any problems with the warranty or log a service call with you.


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If you require further assistance, please contact Technical Support.
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Article ID: SLN155134

Last Date Modified: 07/10/2020 02:38 AM

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