Question about Acer TravelMate 2300 Notebook

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Acer aspire 9420 sreen backlight dead

Help needed for dead backlight.
The screen is ok, I can see the scren contents with reflected light.

Aslo can get the backlight to flash momentarily when the Fn+F6 buttons are pressed.

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Check the luminance Tube If it is ok then check the power up circuit of tube,check flexible cable connected from motherboard to the power up circuit, check for dry solder in the circuit. But be careful,don't touch or handle the power up circut of tube while the laptop power is turn on because of step up high voltage generated in that circuit.

Posted on Sep 28, 2008

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Screen has gone cloudy?


Kevin, Kevin, Kevin,.....you should have posted your problem here first.

Primer:
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 a series of LED lights.

In regards to the Acer Aspire 7720 series of Notebook PC's, the Backlight is a CCFL.

Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.
(Approximately 2mm Wide, by close to the height of the LCD screen, Tall )

A screen Inverter is used to convert the power (Electricity) of the laptop, for the Backlight, and LCD screen.

http://www.cdsparts.com/p-97-new-acer-aspire-7720-7720g-7720z-7720zg-series-lcd-inverter.aspx

90 PERCENT OF THE TIME THE FAULT IS THE INVERTER.

The thin plastic frame in front of the LCD screen, (Resembles a picture frame), is the Display Bezel.

The screen Inverter is mounted towards the bottom of the LCD screen, and behind the Display Bezel.

This you already know. Posting for those who read this solution in the future.

Service Manual (Free),

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

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 26, 2012 | Acer Aspire 7720 Notebook PC

1 Answer

Acer aspire one half screen blank


you have 1 of 2 problems
1 - faulty backlight inverter or
2 - dead backlight tube [there are 2]

either way it must be replaced

need to open up the display portion of your laptop

Dec 04, 2010 | Acer Aspire One PC Notebook

1 Answer

Sreen does not light


If the power and the hard disk light are on and you can see a dim image on the LCD screen when you view it at a sharp angle, then most likely you have a backlight fault which is caused by a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to determine the fault and possible fix :-
http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Jul 27, 2010 | Acer Aspire One PC Notebook

1 Answer

My screen on my toshiba laptop screen is going in and out do I need to buy a new scren/


Most likely your issue is caused by a failing LCD Inverter. You will need to have this replaced. Part is available here: http://cgi.ebay.com/Acer-Aspire-One-A110-A150-LCD-Screen-Inverter-B089AW01_W0QQitemZ190363835846QQcmdZViewItemQQptZUK_Computing_LaptopAccess_RL?hash=item2c52919dc6

This site explains the process for an Aspire 5100 which can also can be used as a reference for your Aspire One model http://www.insidemylaptop.com/remove-lcd-screen-replace-inverter-board-acer-aspire-5100-laptop/

Jan 14, 2010 | Acer Aspire One PC Notebook

1 Answer

My acer aspire 2930 will power on but no screen will appear not even the acer logo which normally appears straight away a dim screen just appears help please!!!


This could be a defective backlight caused by damaged CCF's (cold cathode flourescent lights, or a bad high voltage invertor in the laptop.

IF YOUR unit has a VGA connector, connect an external monitor and see if the machine is working. ALSO try hitting F8 repeatedly to see if you can get into SAFE MODE and it might display.

Try to determine if the machine is running and it is just a dead display.

Put a CD in and see if it flashes the activity light showing it is trying to read the directory from the CD.

Nov 10, 2009 | Acer Aspire 2930-4661 Notebook

1 Answer

Hi, I have recieved a used laptop from a friend.It is an Acer Aspire 1690LCi ZL3. The unit powers on,battery is good,DVD drive opens but the screen is dead.Please help. Sam


A few things to try. First turn on the unit, and after it seems to have booted up (like at a windows login or something), take a flashlight and in a darkened room shine it on the screen. If you can see a picture, it means your backlight is out. Go on ebay or elsewhere online and look for an acer aspire 1690LCi backlight. Then open up your screen and replace it (there should be tutorials online for this). If you don't see an image, your screen maybe be out or have more serious problems (video card, LCD dead, etc.).

May 04, 2009 | Acer Aspire 1690 Notebook

1 Answer

Black blank screen of my Acer aspire one notebook


FN + F6 Turns the display screen
backlight off to save power.
Press any key to return
Try

Dec 30, 2008 | Acer Aspire 5100 Notebook

1 Answer

My acer aspire 1362Lc will switch on but no screen


try to change the inverter ,maybe your backlight is dead...

try to install an old pc monitor...to see if it´s boot up!

Good luck!

Dec 04, 2008 | Acer Aspire 1362LC Notebook

1 Answer

ACER ASPIRE LCD TROUBLE!!


If the screen appears dark with only a faint image or picture and the brightness can't be adjusted then it is likely that the screen backlight is not on - the backlight is like a very thin flourescent tube that runs along the bottom of the screen and provides the illumination. The backlight tube may be faulty or the small electronic inverter unit that powers the backlight tube may have failed. Occasionally the backlight is off because the little switch that is used to detect the screen lid being closed is broken or stuck in. If your backlight is faulty, some engineers will replace it - but it is more common that the entire screen is changed. If it is the inverter they can usually be replaced from ebay.

Mar 15, 2008 | Acer Aspire 1304LC PC Notebook

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