Tip & How-To about Acer AL1912 19" LCD Monitor

LCD and CRT monitors: The fist things you should check

When having problems with any monitor the following are some things you should check when troubleshooting:
1. Check to make sure the power source you are using is good. Since you should always use a good rated surge protector or a UPS (uninterrupted power supply) to protect your system from high voltage power surges and line sags. You should check to make sure that they are still good with a simple line tester or a Multi-Meter that you can get at any lowe's or electrical supply store. They do sometimes go bad.
2. Check the outlet to make sure the plug is still good as well with the same line tester or meter.
3. Check all cable connections to make sure they are connected firmly and they do not have any bent pins which could cause an array of problems. Make sure the cables do not have any defects or damages along cable itself.
4. Check to make sure the power button is one and functioning properly. This is a common sense thing, but you would not believe how many people forget to do this.
5.Check to make sure all the function buttons on the monitors, like the color, tint, vertical, horizontal, etc are set correctly.
6. Check to make sure the resolution is set properly in your computers control panel for the monitor's proper resolution.
7. If all else fails, swap the monitor out with a known good one to confirm if it is the monitor or the video card.

CAUTION: When working with any electrical device or electrical component, you should always use extreme caution because of SHOCK hazards. Always unplug any electrical device before working inside it. You can still receive an electrical shock because Capacitors can hold an electrical charge for some period of time even after power has been removed from the device.

The following is an example picture of what Capacitors look like:

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2 Answers

view sonic pjd6241 no power on what is problem how find out

Check power cable first if ok then do the following
Check Data cable of monitor if it is attached to the source like CPU or any thing else. If connected then there is problem with the main power circuit board of the monitor. May be capacitors of power board are leaked which generally cause No power. See following images.




Mar 30, 2015 | Computers & Internet

1 Answer

Why doesn't the monitor turn on? Power and earth present.

check Data cable of monitor if it is attached to the source like CPU or any thing else. If connected then there is problem with the main power circuit board of the monitor. May be capacitors of power board are leaked which generally cause No power. See following images



Mar 29, 2015 | Computers & Internet

2 Answers

will not turn on

Table of Contents:
  1. Check the Power button
  2. Power button has color
  3. Power button does not have color
  4. Remove non-essential peripherals
  5. Remove and Reseat Basic Hardware items
  6. Contact Us

Step 1: Check the Power button
Find the Power button located on the computer, as shown in Figure-1.
  • If the power button is off, continue to Step 3
  • If the power button on the computer has color (Green, Blue, Amber, or White), continue on to Step 2

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Step 2: Power button has color
Please choose one of the options listed below:
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Step 3: Power button does not have color.
Try a Known-good power outlet or Power Cord. new_note.jpg Note: Typically for Desktop system the power cord from a monitor is the same as the one from the computer.
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Step 4: Unplug External Devices
A piece of hardware may be interfering with the normal boot process of Windows.
Except for the monitor, keyboard and mouse. Remove all external devices especially the following:
  • Printers
  • Scanners
  • Media Card Readers
  • Small Media cradles (iPod, PDA, MP3 player, etc.)
  • Digital Cameras and Video Recorders
  • USB storage devices
  • Remove the computer from the docking station, if you are using one.
  • Remove any CD's or DVD's in the optical drive.

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Step 5: Remove and Reseat Basic Hardware items
new_caution.jpg Caution: Before performing any of the procedures in this section, read and follow the safety instructions in Dell Knowledge Base Article: "Precautionary Measures for Personal Safety" Article ID: 339031.
Remove and Reseat the items below in the order mentioned. Please be sure the computer is off and not connected to any power when removing these items.
  1. AC Adapter
  2. Battery
  3. Memory
  4. Hard Drive

  1. Power Cord
  2. Memory
  3. Hard Drive
For instructions on how to remove these items see the Service Manual.

Feb 27, 2011 | Dell Computers & Internet

1 Answer

my monitor will not come on when power is applied automatically. the monitor does not come up when my system comes on. I just replaced the monitor which i swapped same exact monitor, but this one will not boot when the system comes up.

Please work through the following steps to troubleshoot your no power problem with a ViewSonic Monitor:

Troubleshooting Power Issues:
  • Disconnect and securely reconnect the Power Cable. Then retry the Power Switch.
  • Try using another Power Cable. Most Computers use a similar power cable.
  • Check the power source using another electrical device (like a radio) to make sure the power source is supplying sufficient voltage.
  • If the monitor is plugged into a power strip or extension cord, try connecting to a dedicated wall outlet.
  • If you are using a Thinpanel series LCD (e.g. VP191b, VP201b, etc) check the power switch next to the AC input port on the monitor and make sure it is ON.
  • If you are using an LCD TV, note that some models have a main power switch on the back side – confirm it is on the ON position.
  • If using a remote control, make sure the battery is properly installed.
If the LED is on, but there is no video, use the following links:
  • LCD or CRT monitors : Orange/Amber LED - monitor is receiving power, but no video signal received:
    • Verify that the computer is turned on. You can test this by pressing the Num Lock key on your keyboard once or twice. If the Num Lock light does not turn on/off, then the computer is not working.
    • Make sure the video cable supplied with the panel is tightly secured to the video card in the computer.
    • Check video cable to ensure all pins are straight. If the cable is detachable, try a different video cable
    • If your monitor is connected to a Laptop or Notebook computer, the video output on your laptop may be disabled. Consult your laptop’s user manual or contact the laptop manufacturer for assistance on enabling this feature.
    • Connect the monitor to a different computer system (if available) to see if the issue is with the video card or the monitor. Check the user's guide to see if any special conversion connector or adapter is required for proper signal continuity between the video card and the LCD.
    Red LED:
    • If the LED is Red and the monitor has no video (no picture), please try the display with another system.
    Green LED - A signal is detected from the video source:
    • Check the video cable to verify that the cable connection is good and the pins are not bent or broken.
  • LCD TVs
If you have tried the above steps and the problem persists, please Contact Technical Support at ViewSonic.

I hope this will allow you to resolve this issue. If I've managed to answer your question or solve a problem, please take a moment to kindly rate this post....thanks!

Mar 27, 2009 | ViewSonic E70f 17" CRT Monitor

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