Question about LG Flatron L1919S LCD Monitor

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Power saver when boot up computer, monitor indicator light is green. boot up images start to appear on screen. then indicator light changes to yellow(power saver) and monitor turns black. CPU (Dell) all four lights are green indicating normal operation. any suggestions will be appreciated.

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  • jbronner102 May 22, 2009

    when boot up computer, monitor indicator light is green. boot up images start to appear on screen. then indicator light changes to yellow(power saver) and monitor turns black. CPU (Dell) all four lights are green indicating normal operation.
    any suggestions will be appreciated



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Posted on Jan 03, 2008


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Screen will not come on hard drive light no light checked power supply is ok

Things to check:
  1. Power led on the front of the tower, it should be solid green when on. Flashing Amber is generally an indication of a bad power supply inside the tower
  2. Power LED Solid AMBER indicates system is not finishing the power on self test (POST) and you remove all connections from the tower except power and try turning on again. If no change, remove all PCI and PCI-E cards from system, try again, no change replace motherboard.
  3. On the back of the tower are 4 diagnostic LEDs near the ps2 ports marked ABCD, after the POST, during a normal boot the will flash in several sequences and with boot is finished all 4 should be green. If they stop an a different pattern, then that indicates a failure Yellow Yellow Green Green indicate bad RAM for example
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Troubleshooting Flat Panel Monitor issues. Screen is blank and power indicator...

Troubleshooting Flat Panel Monitor issues.

Screen is blank and power indicator is off

The monitor is possibly not receiving power. Perform the following steps to fix the problem:
  1. Ensure that the electrical outlet and the monitor are both switched on.
  2. Check that the power cord is firmly plugged into the electrical outlet and the power supply unit.
  3. If the power cord has a removable fuse, replace it.
  4. Try another power cord.
  5. Try another electrical outlet.
  6. Check the power connection at the back of the panel.
Screen is blank and power indicator is steady green

Brightness and Contrast may be too low. Adjust the brightness and contrast using the On-screen display controls (OSD) by selecting the button
Screen is blank and power indicator is steady amber

The monitor is in the Power Management Standby state. The power management feature is invoked when the computer recognizes that you have not used your mouse or keyboard for a user-definable period. Perform the following steps to bring monitor out of the power management state:
  1. Press any key on the keyboard or move the mouse to restore operation.
  2. Check the Power Management software on your computer.
  3. flatpnlmont12.jpgPress the (OK) key to switch between analog and digital mode. If the panel is the wrong mode for the signal being provided, the monitor appears to go into sleep mode.
Screen is blank and power indicator is flashing green
Display mode of the computer is outside the range of the monitor. The display mode the monitor uses is controlled by your computer. Therefore, you should refer to your computer's documentation for details on how to change display modes.

The image size, position and shape may change when the display mode changes. This is normal and the image can be readjusted using the IMAGE SETUP and the monitor controls.

Note: Unlike CRT monitors, which requires a high refresh rate to minimize flicker, TFT technology is inherently flicker-free. If possible, configure your computer for 1600 x 1200 addressability at 60Hz vertical refresh rate.

Use the following table as a guideline and reconfigure your computer to use a supported display mode. The highest resolution (for example, 1600 x 1200) produces the optimal output, but limitations of your monitor may prohibit this setting. Adjust the addressability mode until an image appears.

CHECK SIGNAL CABLE" message is shown and power indicator is steady amber.

The monitor is not receiving a video signal. Perform the following steps to fix the problem:
  1. Check that the signal cable is firmly connected to your computer
  2. Check that no pins are bent in the signal cable connector.
There are noises in the video signal. The IMAGE SETUP function is used to adjust the level of noise in the video signal which causes horizontal lines or areas where the image appears to be unstable and jitters or shimmers. This can be done automatically or manually.
Note: It is not applicable to digital input.
Use the image setup fix the problem:
  1. flatpnlmont6.jpgSelect (Image Setup) menu in the OSD.

  2. Select Manual to adjust CLOCK/PHASE settings.
Image appears to be discolored

The color setting may be incorrect. Perform the following steps to adjust the color settings:
  1. flatpnlmont8.jpgSelect (Image Properties) from the OSD menu.
  2. flatpnlmont9.jpgSelect (Color Properties) to adjust the color mode you find most comfortable or fine tune the colors using the Custom menu.
A few dots are missing, discolored, or inappropriately lighted

A small number missing, discolored, or lighted dots may be present on the screen, which is an intrinsic characteristic of the TFT LCD technology and is not an LCD defect.
Using On-Screen display (OSD) controls
flatpnlmont12.jpgThe settings adjustable with the user controls are viewed through the OSD. Press the (OK) button to display the main OSD menu.
OSD main menu:

Note: The LCD monitor needs time to become thermally stable the first time you turn it on each day. Thus, to achieve more accurate adjustments for parameters, allow the LCD monitor to warm up (be on) for 15 minutes before making any screen adjustments

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My screen develops some ghost images after powered up for a few hours. I can actually see some words that appear almost burnt into a screen. Similar to a monitor that has been left on too long if someone...

well you are correct and when it come's with the lcd monitors it is known that when a pixel is subjected to same amount of charge for a long time it might retain the residue of charge even after the amount is changed so this reason why you get this problem and in order tackle this just try to use some changing screen savers or just turn the monitor switch off while you are not around it.

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Maybe this is a Screen Saver, set to start after 15 minutes. Open up Control Panel then Appearance and Personalization, then Screen Saver to check on this and perhaps choose a more pleasant screen saver.

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try booting into safe mode. press F8 while the computer is booting. see if everything stays normal. It should tell you that it booted into safe mode. Once there, change the resolution or the frequency of the display(also known as the refresh rate) by right clicking on the desktop and selecting properties. Once there, click the tab all the way to the right, it should give you color quality options and resolution options. At the bottom, there should be an advanced tab. Depending on our video card this menu can be different from others. Look in that new window for and option to change the refresh rate or the frequency. The value will be in xxx hertz. try setting it to 60 hertz.

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I suggest video section according your report the light green LED lighted that shows the power section is doing fine.

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