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LCD NOT APPEAR

Acer Aspire 9303wsmi No Display on LCD, no display using external VGA DSub, (no sign of characters on dark screen (ie if the backlight had failed)
removing all power and battery and using one or other (ac / battery)and powering up: Bios does one long and two short beeps (then appears to be booting (disk activity) after about 30 sec / 1 minute it spontaneously powers off (all the time wih no display) subsequent attempts don't seem to startup instead just power light and numlock illuminater, removing all power for a short interval will allow the start up behaviour as described (disk activity followed by lockup at 30 sec / 1 min)..

Is the Graphics card a separate card or MB intergrated, (it feels like a graphics card problem)

The machine runs almost constantly normally, however it was turned off as as it was a bit warm, problems only appeared on the susequent restart the next day.
Cheers for any help

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Bios does one long and two short beeps

This is the code for Video Failure.
Replace the Vid Card.

Posted on Sep 04, 2009

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I recently replaced the battery in my acer aspire 5532. Less than a week later when I turn it on the screen remains black. You can hear the computer starting and the indicator lights turn on but nothing...


Oh, OH!..........................

1) Does the laptop feel warmer than usual?

2) Have you noticed any strange behavior?

Staying up late at night?
Excuses why there are DVD's all over the place?
Refrigerator door is left open?

Any mention, why there is an M1A2 Abrams tank sitting in the living room?






OH,.......I'M JUST KIDDING!



A) Laptop on, take a flashlight, and shine at the LCD screen; at various angles

See faint images?

(Ah HA! Busted! Somebody's holding a thin curtain up inside the Display Assembly!........................Not funny?..................K)

B) I would like you to connect a VGA monitor, to the VGA port (connector) on the laptop.
This test will show us if the laptop is working okay, but the problem is the Video Cable, or inside the Display Assembly.

It also tells us if the graphics chipset is good.

Laptop OFF, monitor OFF, connect a VGA monitor; to the LEFT side of the laptop; and to the Blue VGA port.

This is a general example of a VGA connector (port), and VGA Cable,

http://en.wikipedia.org/wiki/VGA_Connector

Scroll down a little for the VGA Cable example.

You can use one of the older CRT types of monitors, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

C)Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.
By factory default settings the display should automatically, on the external VGA monitor.

IF not;
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

Press, and hold the Fn key down, and at the SAME time tap once on the F5 key.
The F5 key is the Display Toggle-Over key

Still no?
Hold the Fn key down again, and tap the F5 key once more.

IF, the display shows on the external VGA monitor, then the problem is the Video Cable; or inside the Display Assembly.

[Inside the Display Assembly would be screen Inverter, or LCD screen ]

http://battery-adapter.com/product_info.php/products_id/3408/vAspire+5532+Series

The plastic frame in front of the LCD screen, is the Display Bezel.
Acer? LCD Panel Bezel, or LCD Bezel

http://www.youtube.com/watch?v=9_UtDnQuQUA

Go to 0:45
The green rectangular object that was behind the Display Bezel, and is mounted to the bottom of the LCD screen; is the screen Inverter.
As you can see it's a green colored, rectangular circuit board.

Just showing you location. If it is decided to replace it, I will step by step you through the procedure.


Now a small primer if I may;

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 more than one), or a series of LED's
(Light Emitting Diode)
As far as I can tell the Aspire 5532 uses one (1) CCFL for a Backlight,

https://www.laptopscreen.com/English/model/Acer/ASPIRE~5532/

However, Laura, this is not 'etched in stone'.
If your Aspire uses LED's for a Backlight, it will be stated on the Palm Rest Cover.

A CCFL is a Cold Cathode Fluorescent Lamp. (Bulb)
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 capital letter -> O <-

Average length is almost as long, as the LCD screen is in height.
View the last 8 photos,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

A screen Inverter is used to convert the power (Electricity), from the laptop; for the LCD screen, and Backlight.
90 PERCENT of the time, the fault can be attributed to a bad screen Inverter.

CCFL backlighting uses a screen Inverter.
LED backlighting GENERALLY does not.

Primer over.

Please post in a Comment, as to whether the display shows on the external VGA monitor.
We will diagnose from there.

Regards,
joecoolvette

http://solutions.3m.com/wps/portal/3M/en_US/NA_Optical/Systems/BehindTheScenes/Optics101/

Click on the monitor icon

Apr 08, 2013 | Computers & Internet

1 Answer

Trying to fix laptop screen that is whited out


Alex,
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,

https://www.laptopscreen.com/English/model/Acer/ASPIRE~5732Z-4855/

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,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

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,

http://www.lcd-inverter.co.uk/screen-inverter.php/acer_aspire+5732z_lcd-inverter_6130.htm

Primer over.

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

Diagnose:

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),

http://en.wikipedia.org/wiki/VGA_connector ]

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.
Why?
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.
(Stretched/Broken)

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,

http://www.fonerbooks.com/test.htm

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,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-acer

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,

http://support.acer.com/acerpanam/Manuals/acer/2009/ServiceGuides/SG_Aspire_5732Z_5332_10192009.pdf

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.

Regards,
joecoolvette

Oct 06, 2012 | Acer Aspire 5732Z-4855 Notebook

1 Answer

White horizontal lines running across laptop screen


I did not see any white lines, Simon, in the screenshot.
Just sayin'.
(Glad you tried to post it though!)

The problem is caused by a faulty Video Cable, or it's in the Display Assembly.

However, you better start the diagnoses with using an external VGA monitor, and see if the lines show up on the external monitor, also.
This would indicate a bad graphics chipset.

For most people that would mean replacing the motherboard.

A) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA connector, on the Left side of the laptop.

Example of a VGA cable, and VGA port, (Connector),

http://en.wikipedia.org/wiki/VGA_connector

You can use a external VGA monitor that is a CRT type, (Looks like a small TV), or a flat LCD screen monitor with a VGA cable.

A1) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

By default the display should show on the external monitor.
IF Not,

Press, and hold down on the Fn key, (Bottom left of Keyboard), and at the same time tap on the F5 key. (Top of Keyboard)
{The F5 key is the Display Toggle-Over key }

No?
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.

Graphics look good on external VGA monitor?
Your graphics chipset is good.
Problem is Video Cable, or in the Display Assembly.

B) Video Cable: (LVDS Cable)

http://www.insidemylaptop.com/disassemble-acer-aspire-7551g-laptop/

The above is for an Acer Aspire 7751G, but it is close enough to the 7750G models, and info should directly crossover.

Scroll down to Step 17.
The Video Cable connection to the motherboard, is shown by the yellow arrow at the Top Left.

Note, although the photo is less than, the routing of the Video Cable.
It goes through the Left Hinge.
(Then into the Display Assembly, and connects to the back of the LCD screen)

With normal opening, and closing of the laptop, the Video Cable could be pinched, or have been pinched. Could have been pulled on.

You close the laptop, the cable is slightly pinched in the Hinge, and it pulls loose from the motherboard connection, AND/OR the LCD screen connection.

Doesn't take much of a loose connection. In fact it's hard to discern with the human eye, sometimes.
Make sure this motherboard connection is tight.

You have to open the Display Assembly, and check the Video Cable connection on the back of the LCD screen.

Doesn't look loose? Try to plug it in tighter anyway.

Check the connection of the wire/s from the Video Cable, TO the screen Inverter.
The small circuit board behind the Display Bezel, (LCD Bezel), and mounted to the bottom of the LCD screen.

When on the motherboard side, the side of the Video Cable that runs through the left Hinge, is there any apparent damage? Damage to the sheath of the Video Cable?

If there is, chances are the tiny wires inside the Video Cable, are damaged also.
Check with a multimeter. Perform a continuity test of Each wire.

C) Display Assembly:
Video Cable checks out then the problem is in the Display Assembly.

1) Screen Inverter:

http://www.sparepartswarehouse.com/Acer,Aspire-7700-thru-9800,Laptop,Inverters.aspx

http://www.insidemylaptop.com/replace-broken-screen-acer-aspire-5745g-laptop/

Not your model, granted. Posted for the Display Assembly dis-assembly pictorial guide.

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

A Backlight is a CCFL, or a series of LED lights.
Your laptop uses a series of LED lights for the Backlight.

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

A CCFL requires a screen Inverter.
A screen Inverter converts the power from the laptop, for the Backlight, and LCD screen.

NOT all LCD screens that use LED lights as a Backlight, use a screen Inverter. I suspect yours does not, as I can't find a listing for a screen Inverter, for it.

http://www.laptopscreen.com/English/section/FAQ/1245191276/Correct%20backlight%20type%20for%20your%20new%20screen/

This would mean that if the Video Cable proves to be good, the next step is to replace the LCD screen.

Shop around for the best price, AND make sure it is a direct replacement for yours.

Regards,
joecoolvette

Feb 12, 2012 | Dell Inspiron Computers & Internet

1 Answer

Where is the reset button on my Acer Aspire 5100 BL51


A) There is no reset button. As with any computer that has Windows, press the CTRL key, ALT key, and DELete key, AT THE SAME TIME to restart the computer.
(Not shouting)

B) To restart, is to Reboot. Rebooting isn't going to help in this case.
(If it does it will be temporary)

You have a problem with the graphics chipset, or the Video Cable, or the Display Assembly.
Diagnose to see which one it is.

1) Laptop OFF, monitor OFF, attach a VGA monitor to the laptop.

Connect to the VGA port on the Back of the laptop.

[ It is named External display (VGA) port, by Acer.
This is an example of a VGA Cable, and a VGA port (Connector)

http://en.wikipedia.org/wiki/VGA_connector ]

The external VGA monitor can be a CRT type (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.

2) Turn the monitor on. If a CRT type allow it to warm up.
3) Turn the laptop on.

By default the display should show on the external VGA monitor.
If not;
Press, and hold down on the Fn key, and at the same time tap once on the F5 key.

(Fn key is on the bottom row of keys on the Keyboard. Second key over from the Left.
F5 key is on the top row )

No display on the external VGA monitor?
There are at least 3 display options.

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

You may have to tap more than once.
(Hold the Fn key down, and tap on the F5 key)

C) IF, the display does NOT show up on the external VGA monitor, you have a graphics chipset problem.

Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_circuit

The graphics chipset's proper name is GPU. Graphics Processing Unit,

http://en.wikipedia.org/wiki/GPU

The GPU for the Acer Aspire 5100 series of Notebook PC's, is an
ATI Radeon Xpress 1100.

It is soldered directly to the motherboard, therefore it is
Integrated Graphics. (NOT a Graphics adapter Card that is removable)

http://en.wikipedia.org/wiki/Comparison_of_ATI_Chipsets

(RS480M)

If the graphics chipset is bad, the easiest, and most cost effective solution, may be to simply replace the motherboard. More on this at the end of the solution.

D) IF, the display DOES show up on the external VGA monitor, the problem is the Video Cable, or in the Display Assembly.

Video Cable:
The Video Cable is termed LVDS Cable by Acer.
Low-Voltage Differential Signaling Cable.

1) Connections:
The Middle Cover is the thin strip of plastic that has the LED indicator lights, and Power On button in it, located above the Keyboard.

Removing this cover allows access to the motherboard side, of the LVDS Cable.

Check this connection to make sure it is tight.

The LVDS Cable also connects to the Back of the LCD screen.
The Display Assembly must be partially disassembled, in order to access this connection.
Check this connection to make sure it is tight.

2) Damage:
With the Middle Cover removed observe the motherboard side of the LVDS Cable, and it's sheath. (Outside cover of the cable)

See if there is any obvious signs of damage. The LVDS cable routes under the left Hinge. Normal opening, and closing of the laptop may damage the sheath.

If the sheath if the LVDS Cable shows damage, the tiny, thin wires inside the cable may be damaged also. (Stretched/Broken)

If damage is shown the LVDS Cable should be removed, and a continuity test of the wires in the cable, should be performed with a multimeter.

This may be accomplished with an economical multimeter, set to Ohm's. (Symbol is the Omega symbol)
An economical multimeter can be purchased for around $8 to $12.
Analog, or digital is fine.

Or you could take the cable to a computer repair shop, and have them test it for you.

http://www.cdsparts.com/p-2292-new-acer-aspire-one-532h-ao532h-nav50-led-lcd-cable-50sas02005.aspx

Display Assembly:
The Display Assembly (LCD Module) consists of the;

1) The LCD Bezel:
The thin plastic frame that is in front of the LCD screen, and surrounds the LCD screen. Resembles a picture frame.

2) Screen Inverter:

3) LCD Panel Brackets:
Metal brackets that attach to the sides of the LCD Panel's screen frame.

(Screen Frame; metal frame that surrounds the LCD screen. The LCD screen is composed of layers, and the metal screen frame holds them in place)
Also includes the Hinges.

4) Backlight:
For the Acer Aspire 5100 series of Notebook PC's, the Backlight is a CCFL. Cold Cathode Fluorescent Lamp

5) LCD Screen:

6) LCD Module Cover:
The top cover of the laptop

Primer:
An LCD screen does not produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, or a series of LED lights.
As stated the Aspire 5100 series uses a CCFL.

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

http://www.laptopz.com/acer-aspire-5100-laptop-lcd-ccfl-backlight-lamp-154-wxga-p-10364.html

[ Average size is 2mm Thick x 334mm Long.
In inches it is approximately a little larger than 1/16th of an inch Thick, and a little over 13 inches Long.

It is located INSIDE the Screen Frame, and next to the LCD panel's layers. The Screen Frame comes apart by removing screws. The side of the Screen Frame, that the Backlight is mounted next to, is removed to access the Backlight.

HOWEVER, the LCD screen (Panel) is composed of layers. These layers are set in a specific pattern, and are held there by the Screen Frame.

If the correct method is Not used when replacing a Backlight, there could be a chance the screen layers of the LCD screen may move, and this would render the LCD screen unusable ]

A qualified professional is called on to perform this repair.

The Screen Inverter converts power (Electricity) from the laptop, for the Backlight, and LCD screen.

90 PERCENT OF THE TIME the fault is a bad Inverter.

Testing a screen inverter is done with a sensitive multimeter. A tool most do not have. Or a known to be good compatible screen Inverter is used as a test tool.

Due to this, the economical cost of a screen Inverter, and ease of replacing, the screen Inverter is usually replaced.

IF, this does not repair the problem, then the problem is a bad LCD screen.

More information in a Comment.

Regards,
joecoolvette

Jan 31, 2012 | Acer Aspire 5100 Notebook

1 Answer

Hi, just turned on my acer aspire, and whilst power is going through it, the screen won't come on. is this a common problem?


Does the laptop appear to boot up but cannot see an image on the screen?
If this is the case the LCD screen maybe faulty.
You may have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
To determine if the video card or the LCD is faulty, connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight. It could be a faulty inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
www.lcdparts.net

Oct 07, 2009 | Acer Aspire 3680 Laptop

1 Answer

Acer dark screen problem


your problem is a faulty ccfl BackLight Inverter, the display uses the backlight to illuminate the lcd screen, the inverter is used to illuminate the cold cathode light in the back of ther lcd theirs countless places to laern about it on google.
They are cheap to replace google your model with inverter at the end..
I cannot say how many I have replaced in Acer systems
I know for a FACT this is the problem. They are cheap inverters.
When you replace this one i would expect it to last longer :)

Jul 10, 2009 | UltraLast ULAC3660L For Acer Aspire...

2 Answers

Acer Aspire 9303wsmi No Display on LCD, no display using external VGA DSub, (no sign of characters on dark screen (ie if the backlight had failed) removing all power and battery and using one or other...


One long and two short beeps indicate the problem with the display card on most of the laptops. Graphic card is integrated to the motherboard. Therefore the motherboard needs to be repaired.

Jun 26, 2009 | Computers & Internet

1 Answer

Dark monitor screen with hidden display in the dark.


You most likely have a defective CCFL backlight, it may have the following symptom:
  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

Apr 07, 2009 | Acer Aspire 5040 Notebook

2 Answers

Acer Aspire 9303WSMi - 17" LCD Screen is showing coloured static..


More like the LCD Inverter Board..a loose connection would not cause that, unless you pulled the video cable by openening and closing the lid, but again that too is highly unlikely..

Jun 03, 2008 | Acer Aspire 9300 Notebook

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