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Laptop monitor connections

There is a black and white wires comming off the monitor of my gate way laptop are they used?

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The wires are probably the receivers for your wireless card.

Posted on Jan 29, 2008

  • Jon White
    Jon White Jan 29, 2008

    On some Dells that I have seen, if you take the keyboard off, you will see these two wires run into the card. So to be 100% sure, you would have to trace their origin.

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Need to know where antenna card is located on my p25 toshiba laptop


The Wireless Module is located on the Bottom of the laptop,

http://www.irisvista.com/tech/laptops/ToshibaP25/disassembly/big/Toshiba_SatelliteP25_03.jpg

The top card to the left. (With the red arrow)

White Wireless Antenna wire, and a Black Wireless Antenna wire.
You can see which terminal the White wire connects to. Leaves the other terminal for the Black wire.

Beginning page of pictorial disassembly guide, (Page 1),

http://www.irisvista.com/tech/laptops/ToshibaP25/SatelliteP25_1.htm

Page1::Page2::Page3::Find another model, is in White, and on the Top of each page, and Bottom of each page.

The Wireless Antenna wires attach to the Wireless Module,

http://www.ebay.com/itm/WIFI-WIRELESS-PA3299U-1MPC-Card-for-17-Laptop-Toshiba-Satellite-P25-/170900245815?pt=LH_DefaultDomain_0&hash=item27ca72cd37

Looks to me the White wire to MAIN, and the Black wire to AUX.

The Wireless Antenna wires then thread up through a cavity (Hole), in the laptop body, and go through/by the Right Hinge.

From there they go into the Display Assembly, and connect to the Wireless Antenna,

http://www.irisvista.com/tech/laptops/ToshibaP25/satP25_LCD.htm

http://www.ebay.com/itm/Toshiba-P25-Satellite-Laptop-WiFi-ANTENNA-K000006070-/220547282983

Scroll down, read the description.

The Wireless Antenna wires route through CHANNELS, and LATCHES.
The Wireless Antenna wires MUST go back in the SAME routing they were originally.

Failure to do will cause the laptop to not go back together correctly, and can cause damage to the Wireless Antenna Cable. (Wires)
[Pinched/Broken]

For additional questions please post in a Comment.

Regards,
joecoolvette

Feb 06, 2013 | Toshiba Satellite P25-S607 Notebook

1 Answer

Display divided into 3 parts


LCD screen cracked, and Three even strips going across? Doubtful. Haven't seen it but I always have my mind open.

Three strips that are irregularly shaped? Look like glass that has cracked?
'Jagged edges'?

LCD screen is broken.

Three even strips indicates to me, that there may be a problem with the Video Cable. Then the screen Inverter is next in the diagnoses.
My money is on the Video Cable.

ALL power removed, Anti-Static Precautions FOLLOWED, I would check out the graphics chipset first.

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the laptop.
Left rear side. This is an example of a VGA Cable, and VGA connector. (VGA port on a laptop ),

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

(Color of connector does Not matter. It is generally Blue, though)

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.

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

There are at least 3 display options available;
1) Laptop internal monitor ONLY
2) Laptop internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the same time tap once on the F5 key. (The F5 key is the Display Toggle-Over key)

No display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F5 key.

Is the display on the external VGA monitor, the same as the internal monitor of the laptop?

Problem is the graphics chipset.

Display is fine on the external VGA monitor?
Problem is the Video Cable, screen Inverter, or LCD screen.

Video Cable:

A) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-14.jpg

Switch Cover removed, Keyboard removed. Shows you where the Video Cable plugs into the motherboard.

B) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-21.jpg

Palm Rest Cover you can see the white rectangular connector, for the motherboard side of the Video Cable, at the top left.
It's above the black cable, and near the screw hole.

The Video Cable leads from the motherboard, up through the left Hinge, and into the Display Assembly.
From there it connects to the screen Inverter, and back of the LCD screen.

http://www.ebay.com/itm/Toshiba-Satellite-A105-6017B0050801-LCD-Video-Cable-Genuine-OEM-Laptop-TESTED-/290754851160?forcev4exp=true&forceRpt=true

In the photo, (You can hover your mouse cursor on it to enlarge), the right side connector plugs into the back of the LCD screen.

The black connector to the far left connects to the motherboard.
The small white connector at the top with the Red, Green, Black, etc wires, connects to the screen Inverter.

(The small Black cable, that comes out from the black motherboard connector, is a Ground wire )

Due to the close proximity of the Video Cable to the left Hinge, it can be pulled on from just normal opening, and closing of the laptop over time.

This means the Video Cable connection on the motherboard side could be loose, or the LCD screen side, or both.

The diagnoses is to PHYSICALLY check BOTH connections. A loose connection at the motherboard, or at the back of the LCD screen could be so small in distance, that you will not see it with the human eye.

Could also result in damage to the Video Cable.
View the Video Cable with the Switch Cover removed, and see if there are any obvious signs of damage to the sheath of the cable.

If there is there could be damage to the tiny wires inside the Video Cable. (Stretched/Broken)

Use a multimeter set to OHMs, to check all wires inside the Video Cable for continuity, or have a 'Mom and Pop' computer store check it for a few bucks, or replace the Video Cable.

Video cable connections are tight? Video cable continuity check checks out OK?
Screen Inverter.

The test for a screen Inverter is to use a sensitive multimeter.
Read fairly expensive.

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

Not having access to a sensitive multimeter that you can use, means just replacing the screen Inverter. Seems like 'part changing', and it is, but you have to work with what you've got.

http://www.sparepartswarehouse.com/Toshiba,Satellite,A105,Laptop,Inverters.aspx

Find THE model number for your laptop, and the correct screen Inverter. A screen Inverter, and an LCD screen are a MATCHED unit.

Screen Inverter is checked out to be OK, or replaced, and symptoms are still the same, the problem is the LCD screen.

Remember, the first part of the diagnoses was to see if the divided parts were EVEN going across, or jagged and irregularly shaped.

Jagged in shape, and not even strips going across, means cracks in the LCD screen.
Replace.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm

[ Main article for A and B links above;

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-motherboard-1.htm ]

For additional questions please post in a Comment

Regards,
joecoolvette

Oct 22, 2012 | Toshiba Sattelite A105-S2051 Notebook

1 Answer

MSI Laptop have no disply only white screen


What can you do if the laptop LCD screen turned completely white?


1. Loose connection between the video cable and the LCD screen.
2. Defective LCD screen.
3. Defective motherboard (I assume the graphics card is integrated into the motherboard).


Here's an example of a laptop with white screen.

When you turn on the laptop, it starts but the image on the screen is completely white right from the beginning.


Most likely you still can use the laptop with an external monitor.

Just connect the monitor to the VGA port on the back or side of your laptop and then switch the video output from internal to external mode.


On Toshiba laptops you can toggle between internal and external screens using Fn+F5 keys. Hold down Fn and press on F5 until you get video on the external monitor.
On IBM laptops use Fn+F7.
On HP laptops use Fn+F4.


It's possible that you have to use a different key combination on your laptop but you get the idea.


On some laptops, in order to be able to use the external monitor, you have to connect it to the laptop and then restart the laptop so the external monitor is detected by the laptop.


In some cases the laptop screen may turn white because of poor connection between the video cable and the LCD screen.


If you want to check this connection, you'll have to take apart the display panel because the connector is located on the back side of the LCD screen.


These laptop service manuals and disassembly instructions may be useful.

Always check the video cable connection first. Reconnecting the video cable may fix your problem.


If reconnecting the video cable doesn't help, most likely you have a problem either with the LCD screen or with the motherboard.


The best way to find out witch one is causing the problem is testing the laptop with another working LCD screen.


you will need to connect to another monitor or your television to your computer with the vga lead monitor connection


click start control panel display change display settings adjust resolution this may vary depending on your operating system


you should see a no 1 and a no 2 with detect and identify keep an eye on the screen when you select the number tabs this may vary depending on your operating system

when you select the no 2 tab this should be the extended desktop always click apply after making any changes

or click start control panel administration tools computer management device manager scroll to monitors right click select scan for hardware changes

if you can get an extended desktop your monitor is faulty

if you cant get an exended desktop


hope it helps

Oct 14, 2012 | MSI WIND10 N450 1.66G 1GB 250GB SYSTWIFI...

1 Answer

Replacing the Cmos battery on my asus note book M3000N model M3N


http://www.laptop-dvd-drivers.com/asus-m3n-laptop-motherboard-p-1549.html

Click on the left view, use your mouse cursor, and magnify the black object. (Maxell)
It has a Red wire, and a Black wire ending in a small White plug.

The black object is just a type of plastic bag, essentially. There is a CR2032 battery inside it. The small white plug coming from the battery's wires plugs into the motherboard.

The Left view is a view of the Bottom. The RTC battery is on the bottom of the motherboard.
So is the Processor.

[RTC = Real Time Clock. Newer nomenclature for the CMOS battery]

Another view of the RTC Battery,

http://www.pchub.com/uph/model/0--10040-3/M3000N-M3N--parts.html?ps=20&type=0


Bottom of page. (Maxell CR2032WK)

No exact Service Manual. Use the following info to disassemble the laptop with. USE an ESD wrist strap, and connect it's alligator clip to a good ground source. Or you can use the laptop for an expensive paperweight.

Regards,
joecoolvette

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

2) http://www.insidemylaptop.com/category/2-asus-laptops/

Oct 11, 2012 | Acer Notebook

1 Answer

I can not se where the connection white from the lcd monitor goes to circuit board


The lead you are talking about, more than likely, is the wireless antenna wire. It has a tiny connector that preses on to the connection on the wireless card. The card usually has two connections one a black wire and the white. Use great care in attaching them to the card, as they can be damaged easily.

If this information was helpful, Please rate it. Thanks

Apr 15, 2011 | Computers & Internet

1 Answer

During startup screen doesn't show anything, but a grayish white. backlight working, cables ok, and seated correctly, no visible damage to inverter boards. one small black wire leading to built-in webcam...


connect an external PC monitor to the slot on laptop...
you will know where is the issue....
if the monitor works then there is an issue on the display of laptop....else some other issue....

Nov 01, 2010 | Dell XPS M1330 Notebook

1 Answer

Laptop Monitor shows balck and white stripes


From what i can barely see it your photo it looks like your video chip  (which is part of the motherboard's chipset) has died. It will be expensive to replace the motherboard.
To recover all your data is easy - just remove the hard disk from the laptop, put it in a case like one of these
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010010092%201053807124%201054107131&name=SATA
then connect the case to another pc.

Mar 26, 2010 | Toshiba Satellite A105-S4084 Notebook

1 Answer

Splicing a monitor output wire from my laptop to


This cant be done.. You need a video card that has the yellow jack [video out]

the red and white jacks are your sound,
get a headphones to RCA adapter for the sound card[computer] going to projector or radio...[just need the RCA adapter to get sound]

But to get the video[yellow jack] to work you NEED a video card with a yellow jack inslled in your computer...or a video card that has a adapter for RCA video



I have a

Sep 30, 2009 | Toshiba Satellite A135-S4527 Notebook

1 Answer

Gateway 400vtx - Reconnecting laptop monitor to laptop base


Find the location of the GPU. The connector should be located near it.

Mar 14, 2009 | Gateway 400VTX-3501335 Notebook

1 Answer

Where to connect the black and white wires from the lcd screen t


the black and white wires are most likely the antenna for the wireless networking card. When you locate the card you will see two small round plugs. Don't think it matters which one goes where.

I really hope this link helps. Like i said i'm pretty sure these are the wires for your wireless antenna.

http://www.laptoprepair101.com/laptop/2008/03/08/installing-internal-wireless-card-into-older-laptop/

Feb 02, 2009 | Toshiba Satelite 2405-S201 Notebook

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