Question about HP Compaq Presario V2000 Notebook

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Lcd latch switch

How can i replace or repair LCD latch switch

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Here is the manual for your laptop..You will find your answer here

Posted on Jun 09, 2008

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U cant do it send it send to repair station

Posted on May 19, 2008

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LCD Screen

If it's a spring loaded type latch mechanism, It may be as simple as a spring. Carefully remove the bezel and take a look.

Jan 19, 2013 | Acer Computers & Internet

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My acer aspire 4520 has a shaky screen, how do i fix it

Just shake your head the same way, so you can view it normally.


Means to me there is a problem with the Video Cable.

The Video Cable plugs into the motherboard; under the Power Board Cover, and routes up under the Left Hinge.

[Power Board Cover = Switch Cover. The thin plastic strip under the LCD screen, and above the Keyboard. Has Power On Button in it, etc ]

From there it goes up into the Display Assembly.
It then connects to the screen Inverter, and back of LCD screen.

Example of said Video Cable for Acer Aspire 4520 Notebook PC,

In the photo the top small white plug connector, plugs into the web camera.
The larger, longer white plug connector below it, plugs into the back of the LCD screen.

The large white connector at the bottom/right, with the black band on it; plugs into the motherboard.
The smaller white plug connector pointing at the bottom; plugs into the screen Inverter.

The screen Inverter is a small long circuit board, and is mounted behind the Display Bezel; and mounted to the bottom of the LCD Screen Frame.

[The thin plastic 'frame' in front of the LCD screen; is the Display Bezel.
The LCD screen is actually an assembly. It is held together by a metal Screen Frame, that sort of resembles a metal thin picture frame ]

Due to just normal opening, and closing of the laptop; the Video Cable may become pinched, and pulled on.
This may result in loose connections of the Video Cable.

Usually loose at the motherboard connection, and/or back of LCD screen. MAY include loose connection at screen Inverter.
A simple visual inspection, will NOT reveal a loose connection.
The connections need to be Physically checked. In otherwords try to manually plug in tighter.

The Video Cable could also be damaged. Visually inspect the sheath of the Video Cable, and see if there is any apparent damage.
If so there may be Stretched/Broken wires in the Video Cable.

However, the diagnosis CANNOT go on without knowing for sure; if the Video Cable is in good repair.
Choices are;
1) To perform a continuity check with a multimeter, on all wires in the Video Cable. (OHM's - 1K)

Take the Video Cable to the nearest small computer repair shop; and have it tested for continuity; for a few bucks.
(Larger shops tend to badger you to have them repair it; or buy a new laptop. Yeah, right)

Due to the low cost you may simply decide to replace the Video Cable. (10 bucks plus shipping, and tax)
'Parts changing' I know, but you have to work with what you've got.

Basic example of screen Inverter,

Primer before I go on;

An LCD screen cannot produce light,

X out the Feedback, click on the monitor icon.

An LCD screen needs an additional source of light.
A Backlight is the additional source.
A Backlight can be a CCFL, (Or two of them), or a series of LED's.
(Light Emitting Diode)

According to searches, the Aspire 4520 uses a single CCFL for a Backlight.
One search results,

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.
General example of a CCFL,

View the last 8 photos.

A screen Inverter is used to convert the power, (Electricity), from the laptop; for the LCD screen, and Backlight.
Note* Notebooks using LED's as a Backlight; do not use a screen Inverter.

Primer over.

ALL power removed. Remove the AC adapter (Charger), and Battery.
Follow removing the screws circled in Red.
The Latches indicated in Green, are GENTLY depressed with a flat tipped screwdriver. Use a small flat tip, be GENTLE. You can break those plastic latches.

The Philips head screws, and those Latches; hold the Switch Cover (Power Button Cover), on.

In the 3rd photo down, the Video Cable connection to motherboard, is shown in the Orange box to the Left.

I'm also going to include a link to a free Service Manual, so this will become all too clear. (Photos are less than, but though they may help too)

Posting pictorial information now, with the desire it may help you to SEE how to perform, these procedures;



On the Aspire 4520 there are FOUR rubber screw covers, going across the top. I use a computer pick to gently raise one side, of the rubber cover, and then pick it off with fingers, and thumb.

They are held on by a type of rubber cement; and if careful with them, you may be able to reuse. If not just apply a tiny dab of rubber cement, and stick them back on. (I use a toothpick dab)
(I also stick them along the Display Bezel, for safekeeping until reusing )

There are TWO Philips head screws to remove from the bottom.
One in each corner.
Once the screw covers are removed, and the screws; the Display Bezel is flexed, and removed.

The Display Bezel has Tabs, going around the inside edge of it's outside perimeter.
These snap into Latches in the Display Cover. (Top Cover)

The procedure is to lay the Display Assembly back as far as you can, and cover with a soft piece of cloth. Protect the LCD screen from your fingernails when removing Display Bezel.
I cut a cereal box to fit the inside edges, of the Display Bezel.
(Some techs use computer gloves )

I find if you go to the left side/middle of the Display Bezel, and gently lift up with your fingertips; then move along with your fingertips under the bezel, and lifting it; the Bezel will flex, and start to pop off.

Snap, snap, snap. The Tabs/Latches start releasing. You have to use care not to break the Bezel, but it's pretty tough stuff.
(Space-age plastic)

Work up to the top corner, then down to the bottom corner; using your fingertips under the Display Bezel.
When this side is mostly loose, start working on the top left corner.
Now go to the bottom.
Work across from left side to right side.

This pictorial details a little more of what I'm 'talking' about,

I don't see that this laptop has a Latch at the Top/Middle. If it did, when the Display Bezel is loose, you would have to slide the Display Bezel to one side, and clear that Latch.

Display Bezel off you have access to the mounting screws, holding the LCD screen TO Display Cover.
Two in each lower corner. (All screws noted in this solution, are Philips head screws )

Remove the mounting screw at top for Web Cam.
This should now, allow you to tilt the top of the LCD screen forward, and check the Video Cable TO LCD screen connection.
You can also check the screen Inverter cable connections, (2)

After checking that the Video Cable TO motherboard connection, is tight, (Physically check), and the Video Cable TO LCD screen is tight; I would leave the LCD screen like it is, plug the Battery back in, and AC adapter.

Power the laptop on, and see if loose connections of Video Cable, is the problem.

Then suggest test, or have tested; the Video Cable, for continuity.
OR replace the Video Cable.

I'm wrong?
Happens. Means you will be out bucks for having the Video Cable checked, or replaced.

If this occurs replace the screen Inverter.

[Screen Inverter checking requires a sensitive multimeter. Read fairy expensive,

Due to the ease of access, and low cost of screen Inverter; those who do not have access to a sensitive multimeter, usually just replace the screen Inverter. This IS parts changing I know. Sometimes though you just have to work with what you have.

Otherwise it means dragging a partially disassembled laptop down to the computer repair shop, and having a tech check it.
Very few know about using a sensitive multimeter to check, and you'll probably get a 'deer in the headlights look'.

Also they will want to repair the laptop. This = No IMHO.
Save money, and do it yourself ]

Link to free Service Manual,

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 the blue -> 4520

Ignore if you are aware;
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 (4520), it may take up to 30 seconds, before the first page comes up.

The PDF file is downloading in the background, and will not show until the full file is downloaded.
This is a Temporary download. If you wish to save a copy to disk, or flashdrive; there is a method. Post in a Comment if you would like to know.

Have a stupid question?
To me there is NO such thing. Post whatever question you have in a Comment. (Or questions)


[I know the above procedures may seem daunting, and you may feel it is beyond your scope. I think differently. If you played with Lego's, or blocks as a child; you can do this. (That, and turn a screwdriver, lol! ]

Dec 19, 2012 | Acer Computers & Internet

1 Answer

How do i fix a black corner on my laptop screen?

You damaged pixels in the LCD screen, Camilia. The answer is No. You have to replace the LCD screen.

[There are statements made, that a warm water damp clean cloth, can be used to gently massage the 'afflicted' area. Ummm, No.
Drip ANY water inside, and Poof! Bye-bye laptop AND LCD screen.

(Yes, even with ALL power removed. To include the CMOS battery inside. { RTC battery } Water droplet/s could still be present when power is reinstalled )

Statements made about gently using a pencil eraser on the area.
Compresses the layers of the panel, and forces oil to move around.
Does NOT always work, and may damage the LCD screen further ]

How tough is it? Doesn't take a rocket scientist. (Sorry Gort)
It's like doing an easy puzzle.

Example using an Asus K53U laptop,

1) ALL power is removed. Remove the AC adapter, and Battery.

2) Open the laptop. Remove the Screw Covers from the LCD Panel Bezel.
(The thin plastic frame in front of the LCD screen )

Screw Covers may be flat small pieces of plastic, or rubber covers.
Both will have a type of rubber cement on them. They are carefully removed with a pick type of instrument. (I use a computer pick)

They are then, one at a time, lightly stuck to the bezel, so they can be reused later.
Then all Philips head screws under the Screw Covers, are removed.

The LCD Panel Bezel has protrusions formed out of it's plastic body, and they surround the outside edges of the bezel. These are Tabs.
They snap into Latches, formed on the inside edge of the Display Cover.

The method to remove the LCD Panel Bezel, is to use your fingernail on the inside top edge/middle, of the bezel, and flex it slightly up away from the LCD screen. Then move your fingers along under the bezel on each side at the top, and pop the Tabs out of the Latches.

A thick guitar pick does help immensely. Use care when removing, but be aware that the bezel is made of space-age plastic. Snap, snap, snap, when the Tabs are freed from the Latches. Almost sounds like you are breaking something, and is a slightly tense situation for your first time.

Unplug the cable (Wire/s) from the screen Inverter, IF a screen Inverter is used. Usually mounted to an area at the bottom of the LCD screen.

If it does not use a CCFL for a Backlight, and uses LED's for a Backlight, it will not have a screen Inverter.
(Cold Cathode Fluorescent Lamp)

Average example of a screen Inverter,

(Approximately 3 to 4 inches Long, 1/2 inch Tall )

Lay the bezel aside. The LCD screen has a metal frame around it. Looks like a thin picture frame. On each side of this frame are Brackets. The screws are removed that hold the brackets, to the LCD Screen Frame.

Then the LCD screen can be tilted forward, and Video Cable removed.

The Video Cable's connector on the LCD screen side, has two Locks on each side usually, that you depress in, in order to unlock the video cable connector, and unplug the video cable from the LCD screen.

Reverse steps to reinstall.
Note that on the example for LCD screens, just the manufacturer code number is stated, not the laptop.
Look at the back of the LCD screen you removed, and match up the correct numbers.

For additional questions please post in a Comment.


Sep 03, 2012 | Samsung Computers & Internet

1 Answer

Why the monitor light switch off

Is this just the light or the monitor shuts down as well. This could be the circuit board for the buttons they are relatively easy to replace and purchase depending on the monitor. If it is an LCD monitor more than likely this is the issue if it is a CRT and the monitor stays on either get a new monitor do not waste money CRT's are easy to get these days. If it is a LCD since it was not specified replace the board for the button control only. If this does not solve the issue if the LCD monitor shuts down after replacing the button card. Then you can purchase a repair kit for your LCD monitor you will have to have knowledge of soldering to replace bloated capacitors you may find.
I have repaired many a garaged LCD monitor for a $17.00 dollar repair kit. So either way what is affordable to you. New monitor or board "Button" replacement or expensive shop repair to fix capacitors....John.

Apr 12, 2012 | Computers & Internet

1 Answer

When I flip my acer aspire 4315 screen it goes white.

A laptop display is one of the most expensive single parts to replace. It can be frightening to try to boot up your Acer Aspire one day and have it display only a white screen. Unless the screen itself has been broken, the cable between the laptop and the screen has either become disconnected or broken. This is a relatively cheap repair.

1.Disconnect the unit from AC power and remove the battery. This can be done by flipping the unit over, pressing the latch on the bottom of the unit and then pulling the battery away.
2.Remove the two screws revealed by removing the battery. Remove two additional screws set into the corners of the base on the edge where the battery was.
3.Turn the laptop over and open the lid. Remove the panel with the power button on it by gently pulling up from the top edge. Remove the keyboard by gently pulling at its top edge to release the four catches on the sides. Once it is free of the catches, flip the keyboard over and lay it down. If you wish, you can disconnect the ribbon cable leading to it and set the keyboard aside.
4.Unplug the video cable. The video cable is the thick wire coming out of the left hinge of the LCD. It is gray and rounded. The cable terminates in a rectangular plug that goes through the top of the laptop base.
5.Turn your attention to the LCD. Remove the rubber feet at each of the corners of the LCD. Remove the four screws that are revealed.
6.Pull the LCD bezel (the plastic part that surrounds the screen) away from the lid by starting at the top and pulling up and away from the inside with a rolling motion. The bezel is secured by plastic latches all around the outside, and pulling up with a rolling motion is the best way to get them to release without breaking. You can also take your blade or screwdriver and insert it between sections of separated lid and bezel to hold them apart and prevent re-latching. Be careful and patient with this step. Believe it or not, this is where the majority of laptop damage is likely to occur.
7.Remove the two cables connecting the inverter board to the LCD screen and the video cable.
8.Remove the four final screws holding the LCD panel into the lid. Two are at the bottom corners, just above and toward the center from the hinges. The other two are at the top center, holding the webcam and LCD to the lid. You should now be able to pull the LCD out of the lid and lay it face down on the base of the laptop.
9.Remove any tape securing the LCD cable gently, and then tug the cable out of its socket and set it aside.

Replacement and Reassembly
1.Begin by gently inserting the replacement video cable into the socket on the back of the LCD and re-securing the cable with the same tape from earlier. Lift the LCD back into the lid and screw the panel back into place. Finally, re-connect the two cables to the inverter board.
2.Press the bezel back into place with a firm, but not overwhelming, pressure. Each section should "click" when the latch engages and not separate again without effort. Replace the screws holding the bezel in place and then re-cover the screws with the rubber feet.
3.Plug the new video cable into the main board. Use a gentle and even pressure, making sure that everything is lined up. If you disconnected the keyboard, reconnect it and push it gently back into place until the catches reengage. Place the power-button panel back in place and press it down before closing the lid and flipping the laptop over.
4.Replace the four remaining screws and slide the battery back into place. Reconnect the laptop to AC power and turn it on. Your screen should now be functioning normally again!

I hope you find it very helpful. Best regards.

Aug 18, 2011 | Acer Aspire 3690-2196 Notebook

1 Answer

Hi How do I take the cover off to replace the screen? Toshiba A105 S1712

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} The LCD screen mask is secured by five screws. These screws are hidden under the screw seals.
Remove three screw seals from the top and two seals from the bottom of the LCD mask.
Remove LCD mask securing screws.

Start removing the LCD screen mask with your fingers. Place your fingers between the mask and the screen and release plastic latches.

To release plastic latches on the side you can use a guitar pick. Do not use a screwdriver or you can damage the screen.

After all latches are released, you can remove the LCD screen mask.

Nov 03, 2009 | Toshiba Satellite A105 Notebook

1 Answer

Latch broken

To repair that will require the replacement of the LCD back plastic assembly, you can find them on Ebay

Jul 03, 2009 | Dell Computers & Internet

1 Answer

Tosiba saterlite A100 pro- how do i dimantle

1. Release the following 10 latches on the switch cover, in that order:
- Six bottom latches (near LCD/ Hinge side)
- Four front latches
2. Remove the speaker cover.

Remove 2 screws holding keyboard in place lift up and
Remove the connector CN11 on main board and keyboard.

The odds of "Repairing" the keyboard are practically nill, I would use an external until a replacement could arrive. LINK

Jun 03, 2008 | Toshiba Satellite A105 Notebook

1 Answer

EVO n610c screen goes off

Hard Rock,

This issue is caused by an over sensitive LCD cover switch. The way this switch works is as follows.There are small slots in the top cover that the LCD latches into when closed. The slot on the left side has a brass clip, which acts as a lever to active the cover closed switch on the system board. The LCD latch pushes down on this lever to turn off the LCD. On your unit this clip has been bent to the point where any pressure near that slot actives the cover closed switch. The fix is to remove the top cover of the laptop and carefully bend this clip. Then reassemble the laptop to test it. It may not work on the first attempt. Its tricky.

Dec 02, 2007 | Compaq Evo N610C Notebook

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