BenQ GL2040AM, GL941M/GL941AM, GL2040M Troubleshooting, Frequently asked questions FAQ

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7. Troubleshooting

Frequently asked questions (FAQ)

The image is blurred:

Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and then select the correct resolution, refresh rate and make adjustments based on these instructions.

How do you use a VGA extension cable?

Remove the extension cable for the test. Is the image now in focus? If not, optimize the image by working through the instructions in the "Adjusting the refresh rate" section on the link "Adjusting the Screen Resolution". It is normal for blurring to occur due to conduction losses in extension cables. You can minimize these losses by using an extension cable with better conduction quality or with a built-in booster.

Does the blurring only occur at resolutions lower than the native (maximum) resolution?

Read the instructions on the link "Adjusting the Screen Resolution" on the CD. Select the native resolution.

Pixel errors can be seen:

One of several pixels is permanently black, one or more pixels are permanently white, one or more pixels are permanently red, green, blue or another color.

Clean the LCD screen.

Cycle power on-off.

These are pixels that are permanently on or off and is a natural defect that occurs in LCD technology.

The image has a faulty coloration:

It has a yellow, blue or pink appearance.

Select MENU > PICTURE > Color > Reset Color, and then choose “YES” in the “Caution” message box to reset the color settings to the factory defaults.

If the image is still not correct and the OSD also has faulty coloration, this means one of the three primary colors is missing in the signal input. Now check the signal cable connectors. If any pin is bent or broken off, please contact your dealer to get necessary support.

No image can be seen:

Is the prompt on the display illuminated in green?

If the LED is illuminated in green and there is a message “Out of Range” on the screen, this means you are using a display mode that this monitor does not support, please change the setting to one of the supported mode. Please read the “Preset display modes” section from the link "Adjusting the Screen Resolution".

Faint shadow from the static image displayed is visible on the screen:

Activate the power management function to let your computer and monitor go into a low power "sleep" mode when not actively in use.

Use a screensaver to prevent the occurrence of image retention.

Troubleshooting 33

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Contents Welcome Copyright Care And CleaningDisclaimer ServicingTable of Contents CD-ROM Getting startedGetting started Getting to know your monitor Front viewBack view Attach the monitor base How to assemble your monitor hardwareConnect the PC video cable Connect the audio cableEither Connect-to and turn-on the power Connect the power cable to the monitorPrepare the monitor and area How to detach the stand baseGetting the most from your BenQ monitor Click Finish Restart the computer How to install the monitor on a new computerHow to upgrade the monitor on an existing computer How to install on Windows 7 system Click the Hardware tabClick Close Click the Monitor tab and the Properties button How to install on Windows Vista systemsClick the Driver tab and the Update Driver button How to install on Windows XP systemClick the Properties button Click FinishPicture optimization Control panel How to adjust your monitorVolume hot key Hot key modeMode hot key Input hot key not available for analog-only modelsMain menu mode This function Display menuPress the or keys to adjust the value Picture menu YES Picture Advanced Picture Advanced menuPicture Mode Create the optimal OFFContrast Game, or Photo Overscan Full Aspect RGB YUV Or keys to change the settingsAudio menu DVI System menuInput to that appropriate Sub VGA To your video cable Connection typePosition Adjusts the vertical Position Adjusts the horizontal Press Keys toLanguage Sets the OSD menu Press Keys to English French GermanPress Keys to YES Geometry settings to Press Menu to leave the OSD Settings menuFactory default values DDC/CIFrequently asked questions FAQ TroubleshootingIs the prompt on the display illuminated in orange? Need more help?