Question about Compaq Computers & Internet

1 Answer

Compaq cq60. Got a black patch at right down corner of laptop screen and it's gradually increasing if I countinue to work with him, that area when I touch is hot. The inverter is new. Can u plz help?

Inverter is new, the lcd cable is also new.

Posted by Silvia Melo on

Ad

1 Answer

Larry Ng

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Compaq Master
  • 5,966 Answers

A very old PC, CQ60-nnn n what is the nnn sub model ?
-100, -200, on up. to 600...??????????
7 years old?
that LCD is bad, as will be CCLF tubes soon if not now.
CCFL tubed PC sux. do no put cash into any CCLF screen of any kind. ever, now. ok?

BAD LCD it is. and more, I promise, on any 2008 PC.

Posted on Aug 21, 2018

  • Anonymous Aug 27, 2018

    the hot screen LCD is a bad screen
    any tech knows that.?
    as is lines, and changes as you twist the screen, see bad LCD.
    the inverter is power, only, not data.
    tell the customer the bad news.
    find new LCD panel. for $50 to $100
    this PC sells for $10 , uses as/is, broken
    that is its street value. !!! 10 bucks.
    (means junk class)
    so tell the customer the fix is 5 to 10 times value of PC.
    buy newer working PC is far far cheaper.
    buy a PC 2010 and newer, and avoid your above
    CCFL back lamps like the PLAGUE.

×

Ad

5 Related Answers

Anonymous

  • 198 Answers

SOURCE: Aspire 5102 WLMi display replacement

Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

Posted on Feb 20, 2008

Ad

Anonymous

  • 101 Answers

SOURCE: Compaq Presario R3000 dim screen but not dark

Sounds like the auto-dim in the BIOS is set too low. Fortunately the Compaq R3000 allows you to adjust the brightness right from the keyboard. Hold down the [FN] function key while tapping the [F8] key will brighten the screen, while [FN]-[F7] will dim it. The settings are different for running on AC power and battery, so you must do each individually.

Posted on Dec 31, 2008

Geekman

Chris Hingee

  • 32281 Answers

SOURCE: lcd screen black on laptop. External monitor works.

Defective CCFL backlight may has 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.

Posted on Mar 31, 2009

John Porter

  • 96 Answers

SOURCE: my compaq preasrio r3000 black screen cant conect to an external

have you any other A/V ports out ie Svid etc if so try that via an A/V lead, if that works reset your bios settings to minimal settings, if that doesnt work search the 'net someone somewhere has had the same problem! try shining a flashlight/lamp onto the screen whilst booting up, if you see anything on the screen then your inverter is definatly gone and yes it could still be your inverter! your laptop may have software/hardware issues with an external monitor?

Posted on Jul 14, 2009

Anonymous

  • 1 Answer

SOURCE: Black corner on laptop screen and burnt smell

The problem you have is caused by a defective LCD inverter.
They really really fragile and the job of replacing them can be quite tedious.
There is not other reason for your screen corner to became dark.
Send it back and tell them that the replaced part is defective or it was not properly installed.

I hope this help you out.

Posted on Aug 29, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to replace inverter boards


Carefully lift up the FL inverter and rotate it a little bit. Unplug cables on both sides. The left side of the inverter board connects to the video cable, the right side to the backlight bulb (CCFL tube) inside the LCD screen. Remove the inverter and replace it with a new one

Sep 11, 2015 | Televison & Video

1 Answer

Why is my replaced lcd screen not lighting up?


1) Wrong LCD screen

2) Video Cable (LCD Cable) is not connected tightly.
Motherboard side, or LCD screen side; or both.

3) IF, a screen Inverter is used, the small cable from the Video Cable, that connects to the screen Inverter; is not connected, or has a loose connection to it. (screen Inverter)

4) An LCD screen, and a screen Inverter are a Matched unit.
If it's the wrong LCD screen......................?

5) IF, a screen Inverter is used; the diagnosis was wrong, and the LCD screen was replaced.
90 PERCENT of the time, the fault is a bad screen Inverter.

A) Laptop's LCD screen uses a CCFL, (Or more than one), for a Backlight; the laptop uses a screen Inverter.

Diagnostic flowchart leads from Graphics Chipset, to Video Cable, to screen Inverter, THEN, LCD screen.
Expensive LCD screen was replaced, instead of the actual part that needed replacing;
Video Cable: $9 to $22
Screen Inverter: $9 to $22

LCD screen: $60 to $245

B) Laptop's LCD screen uses LED backlighting, and does NOT use a screen Inverter:

Diagnostic flowchart is;
A) Video Cable;
A Video Cable should have it's connections PHYSICALLY checked.
You have to try to push the connectors in tighter.
Visual inspection alone will NOT do.

Making sure the Video Cable connections are tight, and this does not fix the problem, then the Video Cable needs to be removed; and every wire in the Video Cable checked for Continuity with a multimeter set to OHM's. (1K)

Not feasible, then take the Video Cable down to the nearest small computer shop; and have the resident tech check it for Continuity.
Should only be a few bucks.

Or just replace the Video Cable.
(Parts changing I know, but...........?)

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 more than one), or a series of LED's.
(Light Emitting Diode)

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 large than 1/16th of an Inch.
Average thickness is almost as long, as the LCD screen is in height.
View the last 8 photos,

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.

As previously stated, Backlighting that uses CCFL, uses a screen Inverter.
LED backlighting MAY, or MAY NOT use a screen Inverter.
When the LED backlight technology first came out, it seems some did use a screen Inverter.
It also seems as the technology advanced, LED backlighting does Not use a screen Inverter.

Regards,
joecoolvette

May 14, 2013 | Sony Computers & Internet

1 Answer

Pink screen


Problem can be;

1) Graphics chipset
2) Video Cable
3) screen Inverter (IF Used)
4) LCD screen

Diagnose to find out.
I need the laptop manufacturer name, and model number.
Model number can be found on the Bottom of the laptop.

Post back in a Comment.

A) Graphics chipset:

An external monitor is used to check, and see if the display is also pinkish on it; or it is OK. Info posted I need, I will detail this procedure out step by step.

Display good on external monitor means graphics chipset is OK.
(Mounting is usually the problem)
Means problem is screen Inverter (IF used), or Video Cable, or LCD screen.

B) Video Cable:

The Video Cable connects to the motherboard, in an area under the Keyboard, or under the Switch Cover.
(Depending on laptop design, Switch Cover may be an integral part of Palm Rest Cover)

From there it leads under, or close by the left Hinge; and then goes up into the Display Assembly.

IF, a screen Inverter is used, the Video Cable has a separate small cable that branches off; and connects to one side of the screen Inverter.
The main part of the Video Cable connects to the back of the LCD screen.

Just due to normal repeated opening, and closing of the laptop; the Video Cable may become pulled on, and/or pinched.
This can lead to a loose connection at the motherboard side, or LCD screen side. (and/or screen Inverter, IF screen Inverter is used)

Can also lead to a damaged Video Cable. (Stretched/Broken wires inside it)
This can cause a pinkish screen.

C) screen Inverter:

With Backlighting that uses CCFL/s for a Backlight, a screen Inverter is used.
(Cold Cathode Fluorescent Lamp)

For Backlighting that is LED, a screen Inverter MAY, or MAY NOT be used.
(First design LED backlighting seemed to. Later design LED backlighting, does not. Light Emitting Diode)

A screen Inverter is used to convert the power (Electricity), from the laptop; for the LCD screen and Backlight.
Screen Inverter going out, can cause a pinkish screen.

D) LCD screen:
Graphics chipset is good, Video Cable connections are good; no damaged Video Cable, screen Inverter is good (IF used); problem is LCD screen.

Awaiting manufacturer name, and model number.

Regards,
joecoolvette

Apr 30, 2013 | Computers & Internet

1 Answer

Black screen delld600


Several things can cause your Dell Latittude D600 laptop's LCD screen to stop working.

Two of the most common causes relate directly to the inverter board and the backlight lamp.


The inverter board is a thin circuit board placed inside the LCD panel.

It's main function is to transfer power from the motherboard to the backlight bulb inside the LCD screen.


If the inverter board goes bad or the backlight lamp burns out, the screen will appear dim or eventually go completely black.


Turn off the laptop, unplug the power cable, close the LCD panel and place the laptop face down.

Remove the battery pack from its compartment on the bottom of the computer.


Flip the laptop back over and reopen the display panel all the way until it is in a 180-degree position.

Insert a flat head screwdriver into the right side of the keyboard bezel.


This is the plastic strip situated above the top row of keyboard keys. Carefully pry the bezel from the laptop.

Remove the two Phillips screws located above the top row of keyboard keys.


Grasp the top edge of the keyboard, tilt it upward and lay the keyboard face down on the palm rest area.

Unplug the keyboard's ribbon cable from the motherboard connector.


Carefully remove the entire keyboard from the laptop.

Disconnect the video and speaker cables extending from either side of the LCD panel to the motherboard.


Loosen the Phillips head screws on each LCD panel hinge.

Carefully lift the entire LCD panel off the laptop's base.


Relocate the panel to a flat work surface, and place the panel so the screen is facing upward.

Use a thin, flat head screwdriver to pry the rubber screw covers from the LCD panel's front plastic cover.


Remove the Phillips head screws revealed by the rubber covers.

Carefully remove the front plastic cover from the display panel.


Locate the inverter board situated below the LCD screen, inside the bottom edge of the display panel.

Disconnect the two cables from each end of the inverter.


Remove the two Phillips head screws fastening the inverter to the display panel.

Carefully lift the inverter board out of the display panel, and dispose of it.


Repeat this procedure in reverse to install the new inverter board, and reassemble the laptop.


Hope this helps


Oct 23, 2012 | Dell Latitude D600 Notebook

1 Answer

Toshiba laptop satellite A75 dim screen


The used inverter maybe faulty. The inverter supplies high voltage to the CCFL lamp in the LCD screen, the CCFL lamp provides the backlight.
LCD screens and Inverters are available from this WEB site.www.lcdparts.net

Feb 15, 2012 | Toshiba Satellite A75-S226 Notebook

1 Answer

Screen on laptop is distorted halfway


A) Video Cable connections are loose:
Connection at the motherboard, and the connection at the back of the LCD screen, in the Display Assembly.

Both need to be checked.

[For Toshiba the Video Cable is termed LVDS Cable.

Low-Voltage Differential Signaling Cable. I will just keep referring to it as the Video Cable ]

B) Video Cable is damaged:
Observe the sheath at the motherboard side of the Video Cable?
Is there obvious signs of damage to the sheath of the cable?

If so, there may also be damage to the tiny, thin wires inside the sheath, of the Video Cable.

Due to the routing of the Video Cable under the left Hinge, the Video Cable may be pulled on. This can create a bad connection.

Due to the above also, the Video Cable's sheath may be damaged, and the wires inside.

A view of the Video Cable by itself,

http://www.batterystyle.com/toshiba-satellite-a205-s5880-cable-p-484063.html

If the Video Cable checks out to be OK, the next item is the screen Inverter.
To test a screen Inverter you need a sensitive multimeter. This usually means expensive. { Or use a known to be good, compatible screen Inverter } Just thought I would state that. Don't want you to completely disassemble your laptop, just to fix a Video Cable, or screen Inverter. {Or LCD screen)

Most consumers decide to just replace the screen Inverter because;
1) If the problem isn't the screen Inverter, it is the LCD screen.
(A LOT of people buy an LCD screen, when all they really needed was a screen Inverter)

An EXPENSIVE part.
(LCD screen? $150 to $400 approximately. Screen Inverter? Usually around $22 to $48 )

2) The ease of access to replace.

As stated, if the problem isn't the screen Inverter, then it is the LCD screen.


1) With ALL power removed, AC adapter (Charger), and Battery, remove the Keyboard Bezel, and the Keyboard.

This is the motherboard connection side.

Display Assembly removed with Video Cable.
Now remove the Display Bezel, and LCD screen assembly, to access the Video Cable connection to the back of the LCD screen.


{NOTE*
The screen Inverter is mounted at the bottom of the LCD screen, and behind the Display Bezel }

This shows the Video Cable, and it's connection at the motherboard side,

http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-2.htm

Scroll down, click on the photo in Step 9.
The Video Cable is the cable to the upper Left side. Has one Red arrow pointing to the left.
The photo in Step 10 shows the Video Cable disconnected from the motherboard.

(This is Page 2 of a disassembly guide. Pages 1 through 4 are available above, and below. Page1::Page2::Page3::Page4::Find another model,
in white.
Just thought I would state that. Don't want you to completely disassemble your laptop, just to fix a Video Cable, or screen Inverter, or LCD screen) )

2) LCD screen side:

http://www.irisvista.com/tech/laptops/toshiba-satellite-a215/disassemble-display-panel-4.htm

http://www.insidemylaptop.com/remove-lcd-screen-from-toshiba-laptop/

All three links above will help you with checking the connections, or removing the cable to perform a continuity check. (Test)

Also with accessing the screen Inverter, and LCD screen.

For additional questions please post in a Comment.

Regards,
joecoolvette

Jan 25, 2012 | Toshiba Satellite A205-S5880 Notebook

1 Answer

LCD screen totally white when turn on


The HP is a flat screen monitor used with many desktop computers. When the LCD on your HP monitor goes white, it is an indication that your monitor's inverter board has gone bad. The inverter board is a small circuit board that transfers power from the monitor's main circuit board to the LCD screen. Replacing the inverter board means dismantling the HP monitor.

1. Power down your computer and unplug the HP monitor cable from the back of your desktop. Disconnect the power cable from the back of the monitor. Relocate the monitor to a flat work surface. Place the monitor with the screen facing downward.

2. Remove the Phillips-head screws from the monitor's base stand and from the back cover. Lift the base stand off of the monitor and remove the back cover. Peel away the foil from inside the monitor around the internal circuit board.

3. Locate the inverter board near the bottom of the monitor's casing. Unplug the power cables from either side of the inverter. Loosen the Phillips-head screws from the inverter board. Lift the old inverter out of the monitor's casing and set it aside.

4. Place the new inverter inside the monitor. Replace the Phillips-head screws and fasten it in place. Reconnect the power cables to the connectors on each side of the new inverter. Replace the foil around the outside of the main circuit board.

5. Replace the back panel and base stand, and their retaining Phillips-head screws

I hope you find it very helpful.
Thank you for choosing fixya.com

Aug 11, 2011 | HP Computers & Internet

2 Answers

RCA LCD TV INVERTER BOARD


I have a new power/inverter board for a L32HD32D RCA 32" flat screen LCD TV. Make offer, 1-907-225-2337 I'll ship it USPS in the box it came in.
LS2HD32 CEG379B CAJAID, CAJA4465 1114363 are some numbers on the package it came in. You might try LPS#1 on the ribbon cables & their video board connection for the LCD by opening the back 4x5" pannel in the middle & clean reinstall them ? That's what fixed my TV, maybe. So I don't need the board now. It's only about a 5 minute job to clean the 2 ribbon cables.
Sincerely Bitdog

Feb 05, 2010 | RCA L32HD32D 32 in. LCD HDTV

1 Answer

Toshiba L350D Screen Loss


you may plug off remote monitor power on to see carefully is there normal dark picture on your lcd screen,
!) lcd dark but there is pcture on the screen, it means the back lights inverter damage(which in the lcd lid and downside of lcd panel), or lamp damage (in the lcd panel), have to replace new parts
2) no any picture and dark panel, you may check lcd signal cable plugs are right seat in the sockets (which located between the back of lcd panel and motherboard), also check the inverter cable same thing (it merges in LCD cable) . it is better replace a new cable (most cases are cable disconnection somewhere)
is this helpful please feedback when you checked, iwill tell you what you can do next, thanks

Feb 15, 2009 | Toshiba Satellite Pro L300D-EZ1002X...

1 Answer

IBM ThinkPad 380Z LCD Inverter


Glad to see you found your cable. The inverter would be my best guess, then possibly the back light, but more than likely the inverter.

Jul 09, 2008 | IBM ThinkPad 380ED

Not finding what you are looking for?
Computers & Internet Logo

Related Topics:

169 people viewed this question

Ask a Question

Usually answered in minutes!

Top Compaq Computers & Internet Experts

Ekse

Level 3 Expert

13434 Answers

Lee Hodgson
Lee Hodgson

Level 3 Expert

4810 Answers

Toby Lee
Toby Lee

Level 3 Expert

409 Answers

Are you a Compaq Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...