How to Run a Diagnostic Test on a Dell Monitor

Summary: This article provides information about built-in self test (BIST) and self-test feature check (STFC) diagnostic tests available on Dell monitors. Learn how to run a diagnostic test toSee more

Article Content


Symptoms

Running a diagnostic test on the monitor helps identify if the Dell monitor is functioning normally when you notice symptoms like a blank or black screen, fuzzy or blurry image, flickering, distortion, color fade, horizontal or vertical lines, color banding, or other screen abnormality.


Table of contents

  1. Built-in Self Test (BIST) or Built-in Diagnostics (BID)
  2. Self Test Feature Check (STFC)
  3. Maintenance Guidelines
  4. Safety Instructions
  5. Frequently Asked Questions
Cause

To learn more about running a diagnostic test on the LCD panel of a Dell laptop, see the Dell knowledge base article How to Run the LCD Built-in Self-Test on a Dell Laptop.

If the monitor diagnostic test has passed, or to further troubleshoot display or video issues on a Dell monitor, see the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Monitor.

WARNING: Before you begin following the instructions listed in this Dell knowledge base article, read and follow the Safety Instructions.
Resolution

Built-in Self Test (BIST) also called Built-in Diagnostics (BID)

Dell monitors are equipped with a built-in diagnostic tool that helps determine if the screen abnormality is an inherent problem with the Dell monitor.

You must run the monitor built-in self test (BIST) when you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade, distorted image, and so on.

  1. Browse to Dell Manuals website.
  2. Identify your Dell monitor:
    1. Enter the model number or Service Tag of the monitor, and then click Search.
    2. Or, click Browse all products, select Electronics & Accessories, Monitors & Accessories, and select your Dell monitor from the catalog.
  3. Under the Documentation tab, scroll to the Manuals and Documents section and click View PDF next to the monitors User Guide.
  4. In the User Guide, under the Troubleshooting section, scroll to the Built-in diagnostics page.
  5. Follow the instructions to run the built-in self test on the Dell monitor.
  6. If the screen abnormality is not present in the built-in self test mode, see the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Monitor.
  7. If the screen abnormality is present in the built-in self test mode, contact Dell Technical Support for repair options.

Self Test Feature Check (STFC)

Dell monitors provide a self-test feature check (STFC) that allows you to check if the Dell monitor is functioning properly as a stand-alone device. If the Dell monitor is connected to a computer, but the monitor screen remains dark or it shows a blank screen, the self-test feature check (STFC) helps verify if the Dell monitor is functioning normally.

NOTE: The self-test feature check (STFC) helps check if the Dell monitor is functioning normally as a stand-alone device. To diagnose screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade and so on, see the monitor built-in self test section of this article.
  1. Browse to Dell Manuals website.
  2. Identify your Dell monitor:
    1. Enter the model number or Service Tag of the monitor, and then click Search.
    2. Or, click Browse all products, select Electronics & Accessories, Monitors & Accessories, and select your Dell monitor from the catalog.
  3. Under the Documentation tab, scroll to the Manuals and Documents section and click View PDF next to the monitors User Guide.
  4. In the User Guide, under the Troubleshooting section, scroll to the Self-test page.
  5. Follow the instructions to run the self test on the Dell monitor.
  6. If the screen abnormality is not present in the self test feature check mode, see the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Monitor.
  7. If the screen abnormality is present in the self test feature check mode, contact Dell Technical Support for repair options.
Additional Information

Maintenance Guidelines

Follow these maintenance guidelines and instructions listed below while unpacking, cleaning, or handling a Dell monitor.

  • To clean the anti-static screen, we recommend using a special screen-cleaning tissue or solution that is suitable for the anti-static coating on LCD panels.
    CAUTION: Do not use benzene, thinner, ammonia or ammonia based cleaners, abrasive cleaners or compressed air.
  • Use a soft and clean micro-fiber cloth that is lightly dampened with water to clean the monitor. Avoid using detergents of any kind as they can leave a milky film on the monitor.
  • If you notice white powder when you unpack a monitor, wipe it off with a clean micro-fiber cloth.
  • Handle the monitor with care as a darker-colored monitor may get scratched and show white scuff marks more than a lighter-colored monitor.
  • While moving the monitor, follow the instructions as described in the User Manual on how to hold the monitor. Do not put pressure directly on the LCD screen as it may cause irreparable cracks.
  • To help maintain the best image quality, use a dynamically changing screensaver and turn off the monitor when not in use.
WARNING: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet, and the video cable(s) from the monitor. Read and follow the Safety Instructions before cleaning the monitor.

Safety Instructions

For displays with glossy bezels the user should consider the placement of the display as the bezel may cause disturbing reflections from surrounding light and bright surfaces.

For information on safety instructions, see the Safety, Environmental, and Regulatory Information (SERI).

For FCC notices (US only) and other regulatory information, see the regulatory compliance website located at www.dell.com/regulatory_compliance.

WARNING: Use of controls, adjustments, or procedures other than those specified in the User Guide may result in exposure to shock, electrical hazards, and/or mechanical hazards.

Frequently Asked Questions

Click to expand the sections below to see more information. Alternatively, click on Show all or Hide all, to expand or close all the sections simultaneously.

To run a diagnostic test on the LCD panel of a Dell laptop, see the Dell knowledge base article How to Run the LCD Built-in Self-Test on a Dell Laptop.

The instructions to run the built-in self test (BIST) on Dell monitors with a joystick is available in User Manual of the Dell monitor.

  1. Browse to Dell Manuals website.
  2. Identify your Dell monitor:
    1. Enter the model number or Service Tag of the monitor, and then click Search.
    2. Or, click Browse all products, select Electronics & Accessories, Monitors & Accessories, and select your Dell monitor from the catalog.
  3. Under the Documentation tab, scroll to the Manuals and Documents section and click View PDF next to the monitors User Guide.
  4. In the User Guide, under the Troubleshooting section, scroll to the Built-in diagnostics page.
  5. Follow the instructions to run the built-in self test on the Dell monitor.
  6. If the screen abnormality is not present in the built-in self test mode, see the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Monitor.
  7. If the screen abnormality is present in the built-in self test mode, contact Dell Technical Support for repair options.

Running a self-test feature check (STFC) and/or the built-in self test (BIST) diagnostic on a Dell monitor is always a good practice to isolate LCD or monitor issues.

If the self-test feature check (STFC) and/or built-in self test (BIST) diagnostic test passed, this indicates that the Dell monitor is functioning normally. To troubleshoot the display or video issue, see the Dell knowledge base article How to Troubleshoot Display or Video Issues on a Dell Monitor.

If the self-test feature check (STFC) and/or built-in self test (BIST) diagnostic failed, contact Dell Technical Support for repair options.

The instructions to reset the Dell monitor to factory default settings (also called factory reset) is available in User Manual of the Dell monitor.

  1. Browse to Dell Manuals website.
  2. Identify your Dell monitor:
    1. Enter the model number or Service Tag of the monitor, and then click Search.
    2. Or, click Browse all products, select Electronics & Accessories, Monitors & Accessories, and select your Dell monitor from the catalog.
  3. Under the Documentation tab, scroll to the Manuals and Documents section and click View PDF next to the monitors User Guide.
  4. In the User Guide, under the Operating the Monitor section, see the Using the On-Screen Display (OSD) Menu.
  5. Follow the menu system to find and use the Factory Reset option in the On-Screen Display Menu.

To view or download the User Guide of your Dell monitor:

  1. Browse to the Dell Manuals website.
  2. Click Browse all products, and then select Electronics and Accessories.
  3. Click Monitors & Projectors and then Select Monitors.
  4. Identify and select the correct model of the Dell monitor.
  5. Go to the Documentation tab, and scroll to the Manuals and Documents section.
  6. Click on PDF next to the required document.
    • Click on More Languages to view the list of available language options (if required).
    • Click on PDF next to the preferred choice of language.
NOTE: Most manuals and guides are available in PDF format. A PDF reader (Acrobat Reader) is available for free from Adobe. This is an external link

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monitor icon For more information and support for your Dell monitor, laptop or tablet screen, see the Dell Monitor Support site.

Article Properties


Affected Product

Alienware 25 Gaming Monitor AW2518H, Alienware 25 Gaming Monitor AW2518HF, Alienware 34 Monitor AW3418DW, Alienware 34 Monitor AW3418HW, Monitors & Accessories, Alienware 27 Gaming Monitor AW2720HF, Alienware AW3420DWAlienware 25 Gaming Monitor AW2518H, Alienware 25 Gaming Monitor AW2518HF, Alienware 34 Monitor AW3418DW, Alienware 34 Monitor AW3418HW, Monitors & Accessories, Alienware 27 Gaming Monitor AW2720HF, Alienware AW3420DW, Alienware 55 OLED Monitor AW5520QF, Dell S2417DG, Dell S2419HGF, Dell S2716DG, Dell S2719DGF, Dell S3220DGFSee more

Last Published Date

09 Mar 2021

Version

13

Article Type

Solution

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