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Acer aspire 1800 has no backlight lighting up and it has aband going across the screen at the bottom,i have put a new converter in and still same problem.

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  • jariggle Jun 29, 2008

    Acer aspire 4520 right out of the box the backlight turns off or dim's down so you can barely see screen. Adjusted brightness, power saving tools, and screen saver no help there. Waiting for Acer to e-mail answer.

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Your LCD needs to be replaced /try logging to system setup if u still have the same display get the LCD repaired but wot i'll suggest is get it replaced

Posted on Jun 05, 2008

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2 Answers

Back light sometimes works


If your laptop appears to boot up and the hard disk LED flashes, then the problem is probably a back light fault. This can be a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Nov 10, 2012 | Acer Aspire As5250-0327 320gb - Perfect...

1 Answer

My acer aspire 4315 lcd is faulty...i can see in it but its so dark


kezler_0007,

I have found in the 8 years of being online, and providing answers/solutions to people's computer problems; that coming across, and trying to explain the answer/solution, is the hardest thing to do.

It appears I have failed you

Let's try again;

1) Perusing the internet, I look at what LCD screens are offered, (Aspire 4315 series of Notebook PC's), and see what backlighting is offered.

I have seen LCD screen examples offered, that seem to be CCFL backlighting.
I DO have to know however, WHAT style of backlighting is used for YOUR laptop.

Do Not want to make a mistake here, because the mistake could cost you five times as much.

You buy a not needed LCD screen, about $100, and only needed a screen Inverter; about $18.

!O_O!?

IF, your laptop states LED backlighting, THEN the only option is to buy the entire LCD screen.
With LED backlighting, the LED backlighting is incorporated into the LCD screen assembly.

There is no simply replace the LED backlighting.

With a laptop that uses CCFL for backlighting, the first thing to do is replace the screen Inverter.
90 PERCENT OF THE TIME the fault is a bad screen Inverter.

Allow me to state the primer over again, now that I have more room;

An LCD screen does Not produce light,

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

(Click on the monitor icon)

Therefore an LCD screen 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)

When I state series, I mean a LOT of LED's. They are incorporated into the LCD screen assembly.
(You see from the above link that an LCD screen is an assembly)

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.
Average length is almost as long, as the LCD screen is in height,

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

View the last 8 photos to see what an average CCFL looks like.

Know this also; A CCFL is a Fluorescent bulb.
This means it has MERCURY in it.
VERY dangerous if the bulb breaks!
Mercury is POISON to the human body.

IF, it is determined that the laptop uses CCFL/s for a Backlight, -> AND the CCFL/s are bad, I implore you to have a pro change it/them.
The other option would be to replace the LCD screen.
The CCFL is incorporated into the LCD screen assembly.

HOWEVER, I still go with the screen Inverter is bad.
(IF, the laptop uses CCFL for a Backlight)

1) http://www.screenaid.com/acer-aspire-43152004-laptop-lcd-screen-141-wxga-glossy-ccfl-backlight-p-7495.html

2) http://battery-adapter.com/product_info.php/products_id/3773/vAspire+4315+Series

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

Go to the 'paragraph' that starts with Aspire 1200. (1200 in Blue)
Drop down to the 4th line, (3810T in blue), scroll across, and click on - 4315

This is a free Service Manual.
It is in PDF file form.
The computer you are using now has Adobe Reader on it, which uses PDF files.

After you click on the file name (4315) it may take up to 30 seconds, before the first page comes up.
(The file is downloading in the background)

[May be on my end, but it took 44 seconds just now, and using a medium speed DSL connection. Usually takes 10 to 12 seconds. Just letting you know so you do not think the link doesn't work ]

LCD Module Disassembly Process - Page 86

Hmmm, also states Inverter Board. (screen Inverter)

Removing the LCD Module is on Page 71.

4) NOT an Acer Aspire 4315 series of Notebook PC; Aspire 3810T. Posted so you would be able to get a more 'Hands on' idea, of working on your laptop,

http://www.insidemylaptop.com/replace-broken-screen-acer-aspire-3810t-laptop/

Test the screen Inverter before replacing?
IF you have a sensitive multimeter, you can. Otherwise IMHO the choice is to just replace the screen Inverter.
Parts changing I know, and I abhor it; but if it is your only choice?

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

Where in the Philippines to order from? Do not know.
Suggest using the internet.

For additional questions please post in a Comment.

Regards,
joecoolvette

Nov 03, 2012 | Acer Aspire 4315 Notebook

1 Answer

White screen but plugin monitor works. is it the screen?


http://support.acer.com/acerpanam/notebook/0000/Acer/Aspire5100/Aspire5100sp2.shtml

http://www.laptopscreen.com/English/model/Acer/ASPIRE~5100/

So you PHYSICALLY checked the connection of the Video Cable, TO the motherboard, TO the screen Inverter, and TO the back of the LCD screen?

Visual inspection will NOT do. If either motherboard connector, or LCD screen connector is loose, the width of this letter -> I < you won't see it, and it will affect the video signal.

The Video Cable connects to the motherboard under the Middle Cover, above the F4 and F5 key on the Keyboard. (Left edge of F4 key over to middle of F5 key)

[Middle Cover is Acer speak for Switch Cover. The cover strip above the Keyboard, and below the LCD screen ]

aspire-3100-5100-5600-lcd-cable-dc020007o00-.html
http://www.laptops-we-r.com/prestashop/aspire-5100-parts/109-acer-


Click on the view to enlarge. Top left side connects to the LCD screen. Rectangular Black connector with thick round cable, at the bottom, connects to the motherboard. Small cable coming off at the bottom, connects to the screen Inverter ]

From the motherboard connector the Video Cable routes up under the left Hinge, and into the Display Assembly. It then connects to the screen Inverter, and LCD screen.

From normal opening, and closing of the laptop, repeatedly, the Video Cable may become pinched.
This can lead to loose connections.

It can also lead to damage of the Video Cable.
If the sheath of the cable shows apparent signs of damage, the tiny wires inside may be damaged also.
Stretched/Broken

This means to ENSURE that the Video Cable is NOT the problem, a continuity test needs to be performed on all of the Video Cable's wires. (OHMS)
If an economical multimeter ($5 to $12) is not available, suggestion is to take it down to the nearest 'Mom and Pop' computer store, and have them check it. Labor charge should only be a few bucks.

Video Cable checks out it's on to the screen Inverter, for the diagnoses.

[NOTE*
This diagnoses is for an Acer Aspire 5100 Notebook PC. Uses a single (1) CCFL for a Backlight, and has a screen Inverter. Laptops that use LED's for a Backlight generally do not use a screen Inverter]

Did you test the screen Inverter, or replace it?

http://www.amazon.com/Acer-Aspire-5100-Inverter-PK070005U00/dp/B005F1N5O2

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

NOTE*
Takes a sensitive multimeter. Read fairly expensive.

Primer;

An LCD screen cannot produce light by itself,

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

Click on the monitor. Suggest start out with your audio turned down ]

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 5100 Notebook PC uses a single (1) CCFL.

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.
Average length is almost as long, as the LCD screen is in height,

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 is a bad screen Inverter.

Primer over.

If the screen Inverter is good, the LCD screen is bad.
Replace.

[The LCD screen, and the screen Inverter are a MATCHED unit.
When purchasing make sure you get the correct screen Inverter, or LCD screen ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Sep 09, 2012 | Acer Aspire 5100 Notebook

1 Answer

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

How do i swap outscreens form one acer aspire to another i have a old one and want to replace the screen on my other which got stepped on


Swapping out is not that tough.

What you do need to know however, is if the LCD screen from the older Aspire One netbook, will work in the 'other' one.

A newer model of Aspire One may Not have the same specifications of it's LCD screen, as one in per se, an older Aspire One.

The screen size may be comparable, the finish also. (Glossy or Matte)
But the voltage requirements, signal requirements, and other specs may be different.
This means also that the Video Cable will be different.

What to do?
You're going to have to remove the LCD screen out of the older Aspire One, and out of the 'other' Aspire One, and look at the information on the back of the LCD screens.

Look at the manufacturer, and model number.
Also of course, it will only take a few seconds to see if the Video Cables are compatible.
If they aren't, it isn't worth going any further.

[ In looking from a brief search, it seems all Aspire One laptop/mini's use a 40-pin video cable connector,

http://www.screenaid.com/acer-laptop-lcd-screens-aspire-one-c-40_14691.html

Looks good so far ]

If the older Aspire One LCD screen video cable, will not plug into the 'other' Aspire One motherboard, you can't use it. Can't use the older Aspire One LCD screen.

IF, the video cables appear to be exactly the same, then I would recommend looking up the specs for both LCD screens, on the internet.
Or post in a Comment on here, and I'll look it up.

(Manufacturer name, and model number's on back of both LCD screens)

Also a 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.
Cold Cathode Fluorescent lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

[ Note*
However your model may use LED lights for a Backlight, instead of Fluorescent lighting ]

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

The LCD screen AND Inverter are a MATCHED unit.

This also needs to be looked up on the internet, to see if they are compatible, from the older Aspire One's LCD screen, to the 'other' Aspire One's screen Inverter.

There are MANY models of the Acer Aspire One.
I will post links to info I have on disassembly, to include replacing the LCD screen.

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

Where it states Aspire One, NAV50, click on the blue - One

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 (One) it may take up to 30 seconds before the first page comes up.

2) http://www.insidemylaptop.com/remove-screen-from-acer-aspire-one-netbook/

3) http://www.youtube.com/watch?v=CRw03PpRJfs

For additional questions please post in a Comment

Regards,
joecoolvette

Dec 04, 2011 | Acer Aspire One PC Notebook

1 Answer

Backlight on my acer mini is out


Only two choices here, either you have lost the inverter, which takes the power from the AC adapter and converts it from DC to high voltage AC for the backlight....or the backlight on the screen has failed.

Jan 06, 2010 | Acer Aspire 4315 Notebook

1 Answer

Acer Aspire 1800 Won't boot


I recently had Acer Aspire One Laptop with very similar symptoms: No screen, no lights (those that indicates activities) except Power button. I first thought the Hard Disk is dead but it's not.
I contacted Acer helpdesk in Australia and they have sent me a document with BIOS update and instructions. I did what it says and then the laptop is back to normal. Yours may have the same issue - need BIOS update. The Aspire One BIOS update requires a FAT USB drive with the updated BIOS and the BIOS Flash program, plugged it in, press and hold 2 buttons: Fn and Esc, then press Power button for a while.
You should seek Acer Support website. But you may need proof of purchase.

May 09, 2009 | Acer Aspire 1800 Notebook

1 Answer

ACER 1800 Laptop


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

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 30, 2009 | Acer Aspire 1800 Notebook

1 Answer

Acer aspire 3600 laptop screen black


Hi,

Sorry for the delay, yes I sorted it out - Basically the backlight had gone in my LCD screen, you have 2 options....1. Buy a backlight off eBay and try and fit it yourself (Very tricky, risk of damaging the screen or 2.Get yourself a relacement screen, this is what I opted to do, found a secondhand screen on eBay for £7.50 and fitted it myself - Works a treat....!

Big tip: If you can't find your model on eBay, look for a brand new screen and it will have in the listing compatible models, then look for a used one on eBay for that different model, my laptop is a 4150 and got a used screen from an Acer 3000,

Hopoe this helps...!

Cheers

Sep 09, 2008 | Acer Aspire 3610 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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