Question about Acer AL2223W 22" LCD Monitor

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My side bar on acer monitor screen has become white. How can I solve this problem? I was told to click on the auto configuration key but can't find it.

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If you have a white bar running up the side of the monitor, then it is probably dead. Acer has 3 year warranties on their monitors so you should call them to see if you are still in warranty. If so, they will fix it free!

If more than 3 years old, try it on another pc. If it is the same on another pc, get a new monitor.

Hope this helps!



Posted on Apr 04, 2011


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How did the auto configuration came about? Try pressing the buttons before powering up. Maybe some of it are stuck.

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Trying to fix laptop screen that is whited out

A primer first;

An LCD screen cannot produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, (Or two of them), or a series of LED's.
(Light Emitting Diode)

The Acer Aspire 5732z-4855 Notebook PC uses a single CCFL, according to all of the websites that sell the LCD screen. One example,

A CCFL is a Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

[Average thickness is 2mm. That is a little larger than 1/16th of an Inch, or about the width of this letter -> H
Average length is almost as long, as the LCD screen is in height.
A general example of a CCFL,

View the last 8 photos ]

A screen Inverter is used to convert the power from the laptop, for the LCD screen, and Backlight.
(For a CCFL. Most generally LED backlighting does not use a screen Inverter )

Example of a screen Inverter used on the Acer Aspire 5732z series of Notebook PC's,

Primer over.

Your problem could be the graphics chipset, Video Cable, screen Inverter, or LCD screen.


1) Graphics Chipset;
Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port, on the laptop.

[ Left rear side has the VGA port. It is White in color. This is a general example of a VGA Cable, and VGA connector, (Port), ]

You can use a CRT type of monitor, (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable attached.

Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on. By factory default the display should show on the external VGA monitor.

If not;
Hold the Fn key down, (Bottom row, second key from left), and at the same time tap once on the F5 key.
(The F5 key is the Display Toggle-Over key)

Still no display on the external VGA monitor?
There are at least 3 display options available;

1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY

Hold the Fn key down again, and tap once more on the F5 key.
Good graphics (Display) on the external VGA monitor, means you have a good graphics chipset.

Bad graphics on the external VGA monitor, means you are looking at motherboard replacement.

Sitting here in this chair in front of my computer, I'm willing to bet your graphics chipset is OK.

If the graphics chipset is good your problem is the Video Cable, screen Inverter, or LCD screen.

2) Video Cable:
This is high on the list for being the 'culprit' of the problem.
Because of it's location.

The Video Cable connects to the top of the motherboard, in an area under the Switch Cover, and slightly to the right of the left Hinge.

It then routes UNDER the left Hinge, and up into the Display Assembly. From there it connects to the back of the LCD screen, and to the screen Inverter.

Just from normal opening, and closing of the laptop over time, the Video Cable may become pinched.
This can lead to pulling on the Video Cable, and may cause a loose connection at the motherboard side, or LCD screen side. Shouldn't be a loose connection at the screen Inverter.

This means the Switch Cover must be removed to check the connection, at the motherboard side. The Display Assembly is opened up, and connection at the back of the LCD screen is checked.

Visual inspection will do NO good. You CANNOT see usually if the connections are tight, or not. It is BEST to physically see if you can plug the cable connections in tighter.

Loose connections of the Video Cable are high on the list, for your kind of problem.

Next is damage to the Video Cable. See if there are any obvious signs of damage to the sheath of the Video Cable. Obvious damage to the sheath may mean damage to the tiny wires inside.

Even if there are no signs of damage to the Video Cable, and if physically checking to see if the Video Cable's connections are loose, and this doesn't solve the problem; the Video Cable should be removed, and it's wires checked for continuity with a multimeter.

(You can take it to a 'Mom and Pop' computer store, and have it checked for a few bucks )

Video Cable checks out, the next hardware part in the diagnoses is the screen Inverter.
[Acer nomenclature for the Video Cable is LCD Panel Cable]

3) Screen Inverter:
The thin plastic frame in front of the LCD screen is the Display Bezel.

[Acer nomenclature for the Display Bezel is LCD Bezel.
The LCD screen is an LCD Panel.
Display Assembly is an LCD Module ]

The screen Inverter is located behind the LCD Bezel, and mounted towards the bottom of the LCD screen.
Testing requires a sensitive multimeter. Read fairly expensive,

If you do not have access to a sensitive multimeter, then the next course would be to replace the screen Inverter.
Due to the low price of a new one, this parts changing solution IMHO is feasible.

Screen Inverter is not the problem, then the problem is the LCD screen.

I believe your problem to be the Video Cable. Loose or damaged. If not then the screen Inverter.

This is a link to a free Service Manual,

Drop down to the subheading - Aspire 1200. (1200 in Blue)
Go down to the 9th line (5720G in blue), scroll across, and click on the blue - 5732Z

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name (5732Z) it may take up to 30 seconds, before the first page comes up.

This is a direct link. If clicking on it does no good, then copy it, and paste it in your browser search bar. Then press the Enter key,

1) Removing the Switch Cover - Page 71

2) You MAY be able to split the LCD Module open, (Display Assembly), and be able to physically check the video cable to LCD screen connection.
If so go to Page 95.
If not remove the LCD Module - Page 73

For additional questions please post in a Comment.


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First, on your main monitor, click "Show displays in menu bar" on your monitor control panel. This will let you set the resolution for each monitor from the main one, click on the little monitor icon on the top right screen to do this. 
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