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LCD Backlight on my Acer Travelmate 2480-2513

It seems that the Lcd backlight on ny Acer laptop in not working,I need to know if it can be repaired and at what cost?

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This will be a problem with either the screen inverter or the screen. If it's the inverter you're looking at $30 to $50 for the inverter plus labor. If it's the screen $150 to $200 for the screen plus labor.I would calculate the labor in as well, but labor rates vary from area to area. The labor rates at my shop are $45/hr. If you were to bring it to my shop I would only charge 1 hour labor for this. Other shops may charge more, but I wouldn't let them charge more than 2 hours labor, this is a fairly simple job and shouldn't take more than an hour.

Posted on Jul 17, 2008

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I have replaced the screen in my Easy Note TJ65 but the screen is still white


Did you diagnose first?

1) First thing to check is to make sure the graphics chipset is OK.

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

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

The I.C. for graphics is the graphics chipset, or more properly, the G.P.U.
Graphics Processing Unit,

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

A) Laptop OFF, monitor OFF, connect a VGA monitor to the blue VGA port, on the left side of the laptop.

You can use a CRT type of monitor (Looks like a small TV), or a flat LCD screen monitor if it has a VGA Cable,

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

(Scroll down a little bit for example of VGA Cable)

B) Turn the monitor on. If a CRT type allow it to warm up a couple of minutes.
Turn the laptop on.
No display on external VGA monitor?

Hold the Fn key down, and tap once on the F8 key.
(The F8 key is the Display Toggle-Over key)

Still no? Hold the Fn key down again, and tap once more on the F8 key.

[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 ]

Good display on external VGA monitor = good graphics chipset.

Going on.
The problem is the Video Cable, or in the Display Assembly.

Small 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 two of them), or a series of LED's.
(Light Emitting Diode)

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.

The Packard Bell Easynote TJ65 uses LED backlighting.

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

http://www.laptopscreen.com/Spanish/model/Packard%20Bell/EASYNOTE%20TJ65/

Primer over.

You are down to the Video Cable, since you have installed a new LCD screen.

The Video Cable connects to the motherboard either under an area, under the Keyboard; or under the Switch Cover.
It then leads across the motherboard, and through the left Hinge.

From there the Video Cable leads into the Display Assembly, and connects to the LCD screen, and LED backlighting.

Due to just normal repeated opening, and closing of the laptop; the Video Cable connections TO motherboard, and/or TO back of LCD screen; may become loose.

Connection at motherboard side needs to be physically checked; to ensure this connection is not the problem.

You also may not have made a good connection to the back of the LCD screen.

(And it would be logical to also check the LED cable connection, while you are at it. Even though a bad LED connection would cause a dark screen, and not a White one)

Also the Video Cable's sheath should be visually checked for obvious signs of damage.
Any apparent signs of damage to the sheath of the Video Cable; may also mean damage to the tiny wires inside the cable.
(Stretched/Broken)

In your situation you need to know for SURE, if the Video Cable is good. Video Cable should be removed, and a multimeter set to OHM's is used, to check continuity of every wire in the Video Cable.

An economical multimeter is around $5 to $12, if you do not have one. Or take to a small computer shop, and have it checked for a few bucks.

Video Cable checks out for continuity, and connections are Tight; you have a bad new LCD screen, or the wrong one.

For additional questions please post in a Comment.
Regards,
joecoolvette

Nov 21, 2012 | Packard Bell Easy Note Tj65 554bu01031...

2 Answers

My team and I are trying to fix an Acer Laptop who is is being charged and screen does not turn on. We thought it was the power adapter and apparently it is not. So we guessed it might be the motherboard...


test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) Ide/Sata make sure they have a secure connections and are not faulty or just replace them they could be faulty
make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty ?

even something as small as an electrical extension or a faulty fan lead can cause this problem

a computer needs all of the data and electrical current to travel through every working device and to have an end for a computer to be able work properly

make sure your graphics card is securely seated with no dust in its socket
hope this helps

Sep 15, 2011 | Motherboards

1 Answer

The back light in my pavilion dv2000 doesnt work. How do i replace it?


One source for the Backlight from a quick search,

http://www.yallstore.com/laptop-lcd-ccfl-backlight-lamp-for-hp-pavilion-dv2000-141-wxga-p-11798.html

General instructions for replacing a Backlight,

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

Advise: Watch it! On a 1-10 scale of difficulty this rates a 9

Keep all layers EXACTLY as they were. Watch the routing of the cables, and use fresh tape, if the old tape can't be reused.

I would attach the Backlight to it's cable before putting the LCD screen assembly back together. Power the laptop up, and see if the Backlight works, or you have a faulty one.
Make Sure the Backlight you purchased works First! (It's no fun disassembling the LCD screen)

1) Remove ALL power to the laptop. Remove the AC adapter (Charger) and Battery.

2) Observe Anti-Static Precautions.
(Use a $3 ESD wrist strap, and connect it's alligator clip to a good ground source)

3) Use a multi-compartment container for the various screws you will remove.
Label each compartment for the area the screw/s come out of.
If a multi-compartment container is not available, substitute with a clean egg carton.
Label each egg holder.

Some screws look Very similar to others. They Are Not.
Put a wrong screw in a hole, and not only do you risk the chance of ruining the threads in the hole, and/or on the screw, you also risk the screw becoming stuck halfway in.

Won't screw in any further.Try to remove it, and it may break off.

The LCD screen is part of the Display Assembly.
The Display Assembly needs to be removed from the laptop, in order to access the LCD screen assembly inside it.

HP Pavilion dv2000 series Notebook PC Service Manual,

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

Scroll down to the heading - HP Pavilion dm1
Go across, and click on dv2000

This is a PDF file. It may take up to 30 seconds for the first page to come up.
It may take additional time for the file to fully download.
Let the file download all the way before looking through it.
(Watch the Download Progress Bar)

At the top of the PDF file is the page number box. It is to the right of the Down Arrow.
Page number for the PDF file, not the Service Manual. (Chapters, and page)
This is the page number I will be referring to, not the Service Manual's page.

Go to Page 145.
Display Assembly

Make notes, and/or drawings, (Camera?) of the routing of the Display Cable, Web Camera Cable, and Microphone Cable, before you remove them from the motherboard (System Board) connectors.
They MUST be routed back exactly as they were.
(The connectors are different from each other, so it is easy to see where they go when reassembling)

Watch the routing of the Wireless Antenna Cables.

There are two Philips head screws for each Hinge. (4 total)
Hold onto the Display Assembly securely when you remove these screws.
It's easy to break a Hinge.

There are 6 Philips head screws that hold the Display Bezel on.
The screw heads are under rubber-like screw covers.
The rubber-like screw covers are Gently pried up, with a computer pick on one side.
(Or similar tool)

The screw covers are held on with a type of rubber cement.
If you use care when you set them down, sticky side up, there's a good chance you can reuse them.
(Yes, they do stick to the pick, and your fingers, lol!)

The Display Bezel is the thin plastic 'frame' in front of the LCD screen, and surrounds the LCD screen.
In the manual when it is stated to, "Flex the inside edges of the Left and Right sides, and the Top and Bottom sides of the Display Bezel...........

EASE a fingertip under the middle inside edge of the Left side of the bezel.
Gently pull up a little.
As you do perform the same procedure on the Right side. (Inside edge/Middle)

(When you do you'll hear a snap, snap sound.
This is the tabs releasing from the matching notches.
Kind of unnerving your first time, you may think you are breaking something.
The Display Bezel is made of a space-age plastic, and is pretty tough. Use care, and it won't break)

Do the same for the Top, and Bottom side of the Display Bezel.

Removing the LCD screen assembly is on Page 154.
Disassembling the LCD screen assembly is on Page 278.
Display Component Recycling

For additional questions post in a Comment.

Regards,
joecoolvette

Jul 28, 2011 | Motherboards

1 Answer

Backlight does not come on even when the unit is plugged in. worked well for golf this afternoon....ideas?


Yes Michael.

90 percent of the time the fault is the Inverter. (Screen Inverter)

{As I'm sure you know,.......
An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

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

An Inverter is used to convert the electrical power coming from the laptop, for the Backlight, and LCD screen }

The Inverter is located behind the Display Bezel, and at the bottom of the LCD screen, for Many models of laptops.

(Display Bezel;
The thin plastic 'frame' in the front of the LCD screen, and which surrounds the LCD screen.
Part of the Display Assembly)

If I knew the manufacturer name, and model number of your laptop, I may be able to provide a link to a free Service Manual.

For additional questions please post in a Comment.

Regards,
joecoolvette

Jun 30, 2011 | Motherboards

1 Answer

I have an Acer Aspire laptop 4810T. It turns on perfectly and everything appears on the screen but it is barely visible. The screen almost appears to be black.


It would seem that backlight for your screen is out. The light may be dead, have a poor connection, or your brightness may be down to zero. To see if the brightness is just low hold the function button "FN" and if you look on the left and right arrow keys there should be a Sun on each one. The left being brighter or filled in, the right darker or hollow. Press the left key while holding the "FN" button. Keep doing this to increase the brightness. If the screen doesn't get brighter there is an issue with the backlight. This is usually covered under warranty. If you still have a warranty contact Acer and they should repair your computer free of charge. If it is not under warranty you may need to replace the screen.

Mar 17, 2011 | Motherboards

1 Answer

My hp compaq Presario V6500 has been damaged and a computer dude in Bathurst NSW said we need a bulb replaced in the screen as it won't light up. Computer functions via TV. R there any local repairers for...


The monitor screen on your laptop is an LCD screen.

An LCD screen cannot produce enough light by itself. It needs an additional light source.
The additional light source is a Backlight.

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

LCD screens are a composite of layers. The layers are held together by a metal frame, much like a picture frame.
The Backlight is usually located on one side, accessed after removing one side of the metal frame.

As stated, a Backlight is a very small type of Fluorescent lamp, (Tube)
Very fragile, easily breakable, and not usually approached by one who has very little, or no experience in replacing.
More common the entire LCD screen is replaced, which includes the Backlight already installed.

A laptop also needs an Inverter to provide power, both for the LCD screen, and the Backlight.

90 percent of the time the fault is the Inverter.
I repeat, 90 percent of the time the fault is a bad Inverter.

An Inverter is cheaper than an LCD screen, and MUCH easier to replace than a Backlight.

Allow me to show you replacing an Inverter on an HP Pavilion dv6000 series laptop.
Granted, it isn't an HP Compaq Presario V6500 series, but the principles still apply the same,

http://www.insidemylaptop.com/remove-replace-lcd-screen-inverter-hp-pavilion-dv6000-laptop/

I can also provide a free link, to the Service Manual for an HP Compaq Presario V6500 laptop, direct from HP Support,

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&lang=en&product=3369429&

In the list click on;
Compaq Presario V6500, V6600, and V6700 Notebook PCs-Maintenance and Service Guide

This is a PDF file.
Allow up to 30 seconds to see the first page, and an additional time may be needed to fully download.

In the Bookmarks menu on the left click on the + sign next to;
1) Removal and replacement procedures
2) Component and replacement procedures
3) Display assembly

And/or go directly to Page 61 to view the Inverter location.

One example of an Inverter for an HP Compaq Presario V6500,

http://www.sparepartswarehouse.com/Compaq,Presario,V6500,Laptop,Inverters.aspx

Granted this is not what you asked for.
My premise is to teach, and hopefully save people money.

If you have additional questions please state in a Comment.
Regards,
joecoolvette

Mar 06, 2011 | Compaq 449901-001 - HP Presario V6500...

1 Answer

Need to know how to remove compaq presario cq62 screen


The Compaq Presario CQ62 is part of a series of Compaq Presario CQ60 Notebook PC's. The actual Product Number is on the bottom of the laptop, in a white Service Tag. (P/N = Product Number)

Stated this because I am going to give you a link to a free Service Manual for the Compaq Presario CQ60 series of Notebook PC's.
Removing the LCD screen from the Display Assembly is the same for all of the CQ60 series.

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

On this page go down to the 6th line. The one that starts with > Compaq Presario 1100.
Go across and left-click on > CQ60

This is a PDF file. the computer you are on now has Adobe Reader on it, which uses PDF files.
(I would recommend upgrading to the newest version, Adobe Reader 9, if the computer you are on does not have it)

After you click on CQ60 you may not see anything happening for up to 30 seconds.
After you see the first page, it may take additional time for the file to fully download.
Suggest you let the file download all the way before looking through it.

You are not permanently downloading the file. If you wish to save a copy to your computer, and do not know how, state in a Comment.
(This way you can burn it to CD for safekeeping, and won't have to download again.
You can also delete it from your computer, and save harddrive space)

If you are aware of the following disregard;
At the top of the PDF file is the page number box. It is to the Right of the blue Down Arrow.
Removing the Display Assembly is on Page 62.

Fast way to get to that page.
Put your mouse cursor in the page number box.
Left-click once
Type 62
Press the Enter key.

A) Remove ALL power to the laptop. Remove the AC adapter (Charger) and Battery

B) Observe Anti-Static Precautions

C) Use a multi-compartment container for the various screws you will remove.
Mark each compartment for the area the screws come out of.
DO NOT mix them up.

NOTE*
In case your LCD screen is not physically damaged

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

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp (Bulb)
Similar to the fluorescent lighting used in homes and businesses, but on a MUCH smaller scale.
(Approximately 3 to 5 inches long, and half the diameter of a No.2 pencil)

An Inverter is used to provide power to the LCD screen, and the Backlight.

It has to reduce the power from the laptop for the Backlight.
It has to increase the power from the laptop for the LCD screen.

90 percent of the time the fault is the Inverter.
A small circuit board located behind the Bezel, and usually at the bottom of the LCD screen.

(Page 66)

This is an example of an Inverter for a Compaq Presario CQ60 series of Notebook PC's.
It is NOT THE Inverter you will need.

Base it on the entire Product Number, the size of the LCD screen, and the finish of the LCD screen.
(Glossy or Matte)
Also match the Inverter to the part number on the back of the LCD screen.

(Same thing for the LCD screen. MATCH the part number so you will get the correct one)

http://www.excelcomputerinc.com/partpicture_EX.asp?ref=61&category=partstable

Need guidance or have additional questions concerning this, please post in a Comment.
Regards,
joecoolvette

Nov 26, 2010 | Motherboards

1 Answer

Acer 7520 laptop screen extremely dark


It may be that your backlight has burnt out, or your LCD inverter has gone bad, if you can hear a high pitched sound coming from the screen it is more than likely the converter, you can order replacements online...

Mar 09, 2009 | Acer (ACERMOTHERBOARD)

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