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LCD on advent 9117 does not work, backlight ok and I can get a display on another monitor. It used to be fine for a while then go white now i cant get a picture atall.

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*check the video cable of monitor is fine

*check the crt tube is good or not contact ur manufacturer

Posted on Jul 01, 2008

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Advent 7111 narrow screen


If the display isn't going full screen, on that 15.4 inch TFT LCD screen, the problem is the screen Inverter, or LCD screen itself.

90 PERCENT OF THE TIME the fault is the screen Inverter.
It isn't a simple screen resolution setting that needs to be changed.

http://www.laptoppowerjacks.co.uk/advent-inverter/advent-7111-7107-8315-lcd-screen-inverter-as023217127-iv09140t-lf.html

Primer:

An LCD screen does not produce light by itself,

http://solutions.3m.com/wps/portal/3M/en_US/Vikuiti1/BrandProducts/secondary/optics101/

It needs an additional light source.
The additional light source is a Backlight.

A Backlight can be a CCFL, or a series of LED's.
The Advent 7111 Notebook PC uses One CCFL,

http://www.screencountry.com/index.php?section=products&model=7111&brand=Advent&size=

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

(Average size is 2mm Thick. Length is almost as long, as the LCD screen is in height. 2mm is close to 1/16th of an Inch )

A screen Inverter is used to convert the power from the laptop, for the Backlight, and LCD screen.

Primer over.

I don't have access to a Service Manual, for the Advent 7111 Notebook PC. I haven't had one come to my shop for repair.

I DO have years of experience at repairing laptops, and I see the Advent 7111 is just a basic laptop, as I HAVE repaired over the years.

If you wish, I can guide you step by step, in replacing the screen Inverter.

(MANY people go out, and buy an LCD screen, when the problem is a much less expensive screen Inverter. Afterwards they buy the screen Inverter. Too bad they didn't come here first)

Post back in a Comment.

Regards,
joecoolvette

[ The Advent 7111 Notebook PC is just a re-badged Quanta TW3M.
According to the source, you should see TW3M on the bottom of the laptop.

http://www.uktsupport.co.uk/advent/laptop/7111.htm

May 20, 2012 | Advent Computers & Internet

2 Answers

Screen on laptop advent 7102 very dull can hard use it hardly any brightness


The LCD screen for the Advent 7102 does not produce light. It needs an additional light source.
A Backlight is the additional light source.

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

An Inverter (Screen Inverter) converts electricity from the laptop, for the LCD screen, and the Backlight.

90 PERCENT OF THE TIME the fault is the Inverter.


The Inverter is a small circuit board located behind the Display Bezel, and under the LCD screen.

[ The Display Bezel is the thin plastic frame in front of the LCD screen. Resembles a picture frame ]

Example of a screen Inverter for an Advent 7102 Netbook PC,

http://www.laptoppowerjacks.co.uk/category-27/Acer12.html


Regards,
joecoolvette

Oct 17, 2011 | Advent Netbook

1 Answer

Advent 5431 screen all mashed up ie cant workout what anythink says on the screen at all,when i plug in external monitor screen is ok..changed screen with a working laptop screen and changed inverter still...


Most probably you have a defective LCD screen cable. This is the only possibility left since you have changed the LCD screen & inverter, & an external monitor works fine. Check your LCD screen cable & replace it if necessary.

Oct 22, 2010 | Acer Aspire 4720 Notebook

1 Answer

Advent 9117 laptop wont boot up


well it looks like you had a phisical problem with the harddrive that made the data to be unreadable the only thing you can do is to try to reinstalll the operating sistem and if it doesent work try to replace the harddrive

Mar 11, 2010 | Computers & Internet

1 Answer

Advent screen problem


this is generally a sign that the monitor /LCD is going .. Not much you can do but replace the LCD

Feb 13, 2010 | Computers & Internet

3 Answers

Hi my screen has gone blank on my laptop advent 5431 any ideas


I have gateway mx7118 and my screen went dim when power on. I connected to a external monitor and no pic on the monitor.
Could the problem be I need to replace the LCD invertor?

Nov 29, 2009 | Acer Aspire 4720 Notebook

1 Answer

The labtop fall and i get white screen, motherboard and prossesor are are working HDD is also fine..what are the possible problem that might occured with the screen??


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; usually the CCFL lamp fails before the inverter.
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.ladparts.net

Oct 28, 2009 | HP Pavilion DV4000 15.4" LCD LEFT AND...

1 Answer

Sony vaio vgn nr160e laptop - no display (intermittent). Attached monitor shows display fine and laptop works fine. Screen used to flicker intermittently (last few days).


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, usually the CCFL lamp fails before the inverter.
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.ladparts.net

Oct 20, 2009 | Sony VAIO VGN-NR160ET Notebook

1 Answer

Lcd monitor 20.1


The white screen is caused by a total lack of control over all pixels. The opposite effect; all black, happens when a failure turns all pixels on, blocking all but a small amount of light.
This could have more than one source; one output of the power supply has failed so the logic section no longer is receiving supply voltage or an external source has damaged the video input of the monitor. The backlight responsible for the white screen is obviously working as this is a separate power supply output to an inverter that powers the backlight lamp.  I'm afraid this is not a DIY repair.

Sep 17, 2008 | Westinghouse Computers & Internet

1 Answer

Problems with advent 7113 backlight


Hi,
i,d suggest trying the laptop on an external monitor firstly.
this will eliminate motherboard fault.
then if it displays fine on the external monitor.
possibility of Faulty Inverter Or CFL Tube.

Mike @ compurepair.

Jul 22, 2008 | Computers & Internet

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