Cable to screen from motherboard broken want to create another one

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

Video Cable

The Video Cable connects to the motherboard.

It then runs along under the Left Hinge, and connects to the back of LCD screen.

{LED backlighting. Does not use a screen Inverter]

Due to just normal opening, and closing of the laptop; the Video Cable may be pinched.

This can cause the connection of the Video Cable TO motherboard, to be loose; and/or LCD screen.

Solution is to partially disassemble the laptop, and PHYSICALLY make sure the connection at motherboard is tight.
Visual inspection will NOT do.

Connection at back of LCD screen needs to be Physically checked also. (Try to plug in tighter)

Also visually inspect the sheath of the Video Cable, for apparent signs of damage.
Any signs of damage to the sheath, may mean damage to the tiny wires inside the Video Cable.
(Stretched/Broken)

Also due to the age of the laptop, suspect cracking of the insulation, of the wires inside the Video Cable.
If you have a multimeter, set it to OHM's (1K), and check continuity of every wire in the Video Cable.
Or take it to a small computer store, and have the resident tech check it.

The Advent 4211 is just a rebadged MSI Wind U100, according to my findings,

Disassembly guide,

http://www.bit-tech.net/hardware/laptops/2008/07/05/breaking-wind/1

That's the problem, the Video Cable,

http://microdream.co.uk/advent-4211-c-lcd-screen-cable-k19-3030019-h58.html

[ In the photo, the large connector at bottom plugs into the LCD screen.
The smaller connector at the upper right plugs into the motherboard.
The separate black wire you see with the eyelet on it, is a Ground wire ]

For additional questions please post in a Comment
Regards,
joecoolvette

Okay. Got a bright flashlight, and some tape?

OH I'M JUST KIDDING!

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

A Backlight can be a CCFL, 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,

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

View the last 11 photos ]

A screen Inverter converts the power from the laptop, for the LCD screen.

The Toshiba Satellite C655d-s5200 uses LED's for the Backlight, and No screen Inverter,

http://www.laptopscreen.com/English/model/Toshiba/SATELLITE~C655D-S5200/

Which narrows your problem down to two possibilities;
A) Problem with the video cable
B) Problem with the LCD screen.

I state LCD screen, because you won't be replacing the LED backlighting. You have to buy the entire LCD screen assembly, as shown in one example above.

(Example is shown for reference, not advertising. You may find a better deal from a reputable dealer, also)

Video Cable:
The Video Cable is attached to the motherboard, under right about at the number 6 key, on the Keyboard.

It then goes across to the Left Hinge, and up into the Display Assembly.
From there it goes to the back of the LCD screen.


From everyday normal opening, and closing of the laptop over time, the video cable may become pinched, and pulled on.
This can create a loose connection at the motherboard side, and/or LCD screen side.

It can also cause damage to the video cable. If the sheath of the video cable shows visual apparent signs of damage, the wires inside may be damaged also. (Stretched/Broken)

Laptop off, ALL power removed, (AC adapter {Charger}, and Battery), I suggest checking the motherboard side connection first.

A visual inspection will Not do. You need to physically see, if you can plug the motherboard side plug of the video cable, into the connector on the motherboard.

A loose connection that is not apparent to the ***** eye, is all it takes to have a problem.

You can click on any photo to enlarge,

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-C650-C655/disassemble-toshiba-laptop-1.htm

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-C650-C655/disassemble-toshiba-laptop-2.htm

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-C650-C655/disassemble-toshiba-laptop-3.htm

Stop on Step 22. Access to the motherboard side of the video cable.

A word on the Keyboard Cable, and it's connector on the motherboard; (Steps 9, 10, and 11),

The Keyboard Cable stays with the Keyboard. It removes from the motherboard connector. The Keyboard Cable has NO plug, or connector on the motherboard end.

The Keyboard Cable is a FFC. Flat Flex Cable.
It has flat gold plated contact strips on the motherboard end.

The motherboard connector is a ZIF connector. Zero Insertion Force.
In Step 11 you can plainly see this connector.
Has a large white rectangular BODY on bottom.
The smaller rectangular shaped piece on top is the Locking Bar.

The Locking Bar does NOT completely remove from the Body.
If it does it is broken, and means motherboard replacement.
Hence why I am being so detailed.

I am sure you use great finesse, but wanted to advise you in advance of the 'danger'.

The Locking Bar is moved towards the LCD screen, and as advised about 1 millimeter. ( -> O <-)
There are Tabs on the Locking Bar. One on each side. Usual procedure is to use your thumbnails on these Tabs, and ease the Locking Bar forward.

Now gently tug on the Keyboard Cable. You may have to gently move it side, to side, to break the Keyboard Cable loose. They sometimes get stuck over time.

Pretty stiff? Better check to see if you have the Locking Bar fully unlocked.
The Keyboard Cable MUST go back in the same position, and through the same plastic Latches and Channels.

(As do all the cables, or you may pinch them, and also will not be able to get the laptop back together correctly again)

Make a mark on one side of the cable, (Away from the gold plated flat contact strips), and a matching mark on the ZIF connector of the motherboard, if you need to.

You can slip the Keyboard Cable back in, Ram Memory, DVD drive, and Battery, and reconnect the AC adapter, to see if this was the problem.

Still no?
Check the LCD screen side connector of the video cable. Is it tight?

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A665-A665D-A660-A660D/remove-replace-lcd-screen.htm

LCD screen connected, turn the laptop on.
Was this the problem?
No?

Even if there are no apparent signs of damage, you may wish to take the video cable down to the nearest 'Mom and pop' computer store, and ask them to check it for continuity. This way you can see if any wires are broken inside. (Labor charge may be free to $5)

(My thinking is if you go to a large computer repair shop, they are going to want to repair the laptop, or sell you an LCD screen, or a new laptop. "Oh that old thing? For 2995 I can put you in the seat of this baby!" )

Or since the video cable is very economical, you may wish to just replace it.
Just one example from a quick search,

http://www.ebay.com/itm/Toshiba-Satellite-C655D-6017B0265601-LCD-Video-Cable-Genuine-OEM-Laptop-Tested-/290753862740?pt=US_Video_Cables_Adapters&hash=item43b247dc54

[Black end on right is motherboard side, gold colored end on left is LCD screen side ]

Video Cable ruled out your problem is the LCD screen, or to be more specific, the LED backlighting.
Replace the LCD screen.

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

May be there's a problem with your screen. Have it checked. If not the problem is with your hard-disk.

If the Video Cable is damaged, you may want to think about obtaining a new one.

Apparently your solder connections didn't work, or you haven't repaired all of the damage.

Wires could be stretched and broken inside their insulation sheath, and you may not see it.
Use a multimeter, and perform a continuity test of each wire.

Inside the sheath of the Video Cable are wires that lead from the motherboard, and go to the screen Inverter.
You know this.

What you may not know is there are wires inside the sheath of the Video Cable, that lead to the wire/s going to the screen Inverter.
One of these wires may be damaged down in the sheath, and is not visibly apparent.

Suggest replace the Video Cable, and put your mind at ease that it is not the problem.

The CCFL in your Display Assembly is about 2mm Thick, and almost as long as the LCD screen is in height.

Not knowing the exact manufacturer and model number of the laptop;

1) I can't tell you if their is just one CCFL, or two.
The CCFL bulb should be located on one side of the LCD screen assembly. (Unless it is a dual CCFL model)

2) I can't tell you if your LCD screen backlighting is CCFL, or a series of LED lights.

It has been posted that you laptop may be a Sharp PC-GP10-CM

[ http://www.ebay.co.uk/sch/i.html?_nkw=sharp+pc+gp10+cm ]

The wires leading to the CCFL bulb are soldered to the ends of the bulb. Perhaps there is a bad solder joint,

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

Me?
I would replace the Video Cable.

Regards,
joecoolvette

This is generally caused when your display cable isn't plugged in all the way or has a broken pin. Make sure the cable is seated at both ends, if it still is bad remove the cable and check for bent or missing pins, if yes replace the cable.

you could get this on Ebay if you dont have an account you will need to create one
Add Email adress
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be very specific when you type in the search
always ask questions? before you make a purchase and keep the email/s for security reasons if the item arrives and its not as described
you will even see the pictures of your item so you cant make a mistake and get them home delivered
hope this helps

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