Question about Sony VAIO SRX99 Notebook

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Mark in lcd so i want to view in vga other moniter which cable i should i use

I have a mark in the lcd screen and its geting bigger so i want to use in vga mode in other moniter so what is the cable required to see in other moniter

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  • montu raju Oct 06, 2008

    no its present in laptop its has only one square like connection


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Connect through the vga port of your laptop to the monitor, the cable is present on the monitor itself

Posted on Oct 06, 2008

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Toshiba Satellite Ultrabook U945-ST4N02 Windows 8,

Check with the moniter by connecting the VGA Cable. is there any display on moniter if yes then laptop;s screen faulty otherwise motherboard issue.

Oct 11, 2013 | Computers & Internet

1 Answer

The Computer boots up, but nothing shows up on the screen.

There is an easy way to find out, Jodie.

1) Laptop OFF, monitor OFF, attach a VGA monitor to the VGA port on the laptop.

This is an example of a VGA port, and a VGA Cable,

Scroll down for an example of a VGA Cable.

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.

(Now watch your laptop not have a VGA port. HDMI, or DVI.
This is why the manufacturer name, and model number of the laptop, needs to be posted.
The model number is located on the Bottom of the laptop )

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.
By factory default settings, the external VGA monitor should show graphics.

If not;
There are at least 3 display options;

1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY

Hold the Fn key down, and tap once on the Display Toggle-Over key.

(Ahem........nope can't tell you which one it is.
HP? Usually the F4 key
Acer? F5 key
Lenovo/IBM? F8 key.
Don't hold me to it, though )

Still no display on external VGA monitor?
Hold the Fn key down again, and tap once more on the Display Toggle-Over key.

NO display on external monitor means an internal hardware problem.
Graphics chipset.
Most of the time it is the mounting of the graphics chipset, TO motherboard. They are soldered directly to the motherboard, UNLESS it is an actual graphics card.

MANY a laptop manufacturer touts their laptops have a graphics card, when in reality that is a bunch of Hooey!
Just advertiser's license to mislead the public.

If that is the problem, it can be dealt with.

[Just for quick edification, the graphics chipset is mounted to the motherboard, via a BGA surface mount. Ball Grid Array.
View the following short video, and watch a BGA Rework Station at work, and also learn more about the BGA surface mount,

Scroll down, click on the red - Take a few minutes to view the IR 650 demo video ]

Graphics show on external monitor?
Problem is the Video Cable, or inside the Display Assembly.

[ Display Assembly is the;
1) LCD screen,
2) Screen Frame: Metal frame which surrounds the LCD screen,
and holds the layers of the LCD screen in place,
3) Display Bezel (Thin plastic frame in front of the LCD screen)
4) Web Camera (If option)
5) Screen Inverter (If used)
6) Display Cover. (Top cover over LCD screen. The cover you look at when the laptop is closed)
7) Wireless Antenna
8) Backlight ]

A primer before we go on;

An LCD screen cannot produce light,

(Click on the monitor image)

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.

View the last 8 photos.

I do not know if your laptop uses CCFL for a Backlight, or a series of LED's. (Model Number, and I will)

A screen Inverter is used to convert the power, (Electricity), from the laptop; for the LCD screen, and Backlight.

SOME of the laptops that first came out, and used LED's for Backlighting; DID use a screen Inverter.
Most cases now is that if a laptop uses LED's for Backlighting; NO screen Inverter is used.

If the fault is found to be a bad Backlight, AND the laptop uses CCFL for Backlighting;

I ADVISE do NOT replace the CCFL Backlight yourself!!!!

They contain Mercury, just like their bigger 'cousins' used in homes, and businesses.
Mercury is a POISON to the human body. Can kill you QUICK!
Plus they are fragile, and are broken easily.

The laptops that use a series of LED's for a Backlight, have the entire LCD screen replaced. It is a unit. LCD screen, and LED backlights.

Primer over.

Laptop on, take a flashlight, and shine it at various angles on the LCD screen.
See faint images? Your screen Inverter is bad, (IF used), or your Backlight is bad.

Display Bezel removed, the screen Inverter is usually located at the bottom of the LCD Screen Frame.
To test a screen Inverter requires a sensitive multimeter.
Read fairly expensive,

Just drag the laptop down to the nearest computer repair shop, and have them test it?
Ummm, no.
A) Doubtful they will want to fool with a laptop partially disassembled. Too much 'litigation'. They could be held responsible for someone else's mistake.
B) They will just want to sell you a new/used laptop.

Most just replace the screen Inverter, due to the low cost, and ease of access to replace. ($10 to $20 bucks)

The Video Cable connects to the motherboard, and usually under an area under the Keyboard, or Switch Cover.

(Switch Cover: Cover that contains the Power On switch {Button}, and LED indicator lights. Under the LCD screen, and above the Keyboard)

It then routes through Latches, and Tabs, over to the left Hinge.
From there it goes up into the Display Assembly.
It then connects to the LCD screen, and screen Inverter; if used.
(Or up to the series of LED's used for a Backlight)

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

This can cause one of two things, or both;
1) Video Cable connection at motherboard may be pulled loose.
Video Cable connections at screen Inverter (If used), or LCD screen; may be pulled loose.

2) Damage to the tiny wires inside the sheath of the Video Cable.

This makes the Video Cable the 'problem child'. It, and the screen Inverter, are on the top of the list with display problems.
(However 90 percent of the time, the fault can be attributed to a bad screen Inverter)

ALL power is removed, AC adapter (Charger), and Battery.
Laptop is disassembled far enough, to access the motherboard connection of Video Cable.

You have to PHYSICALLY check to see if the Video Cable, is plugged in tight. Visual inspection will NOT do. (Try to plug it in tighter)
Still no?

Disassemble the Display Assembly. You have to go far enough, that you can tilt the LCD screen forward, and check the connections on the back. With the Display Bezel removed, you check the screen Inverter connection. (IF used)

Still no? All Video Cable connections are tight?
You HAVE to rule the Video Cable out, as the problem.
This means taking a multimeter set to OHM's, (1K), and check EACH, and every wire in the Video Cable for continuity.

Makes sure there are no broken wires in the Video Cable.
No multimeter? Suggest take the Video Cable down to the nearest small computer shop, and have the resident tech check it out for you.
Should just be a few bucks.

Video Cable is good? Go on.

Screen Inverter is next.

Video Cable, and screen Inverter check out OK? (Replaced screen Inverter)
Then the problem is the LCD screen.

Video Cable? Varies. I have seen them from $9 bucks, up to $40.
Usually $9.
Screen Inverter? As stated, $10 to $20.
LCD screen? $60 to $240.

This is why it pays to go through a flowchart, and not buy an LCD screen needlessly. Would Bl-ow if the problem is a $9 Video Cable, and you bought a $240 LCD screen; and that wasn't the problem.

Please post in a Comment for additional questions,

[ With the model number I may be able to give you a link, to a free Service Manual, and perhaps pictorial guides too.
With them the above won't seem like so much info, it drags the brain down.

For example,

HP has most laptop Service Manuals listed on their HP Support website.
So does Dell.

Jan 02, 2013 | Computers & Internet

1 Answer

Laptop all whit screen

Dell Inspiron 1420 Notebook PC?

The white screen can be fixed. How?

Connect a VGA monitor to the laptop. Connect to the VGA port on the right rear. Example of a VGA Cable, and VGA connector,

You can use a CRT type monitor, (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.
By default the display should show on the external VGA monitor.

Press, and hold the Fn key down, and at the same time tap the F8 key ONCE.
Still no?
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

Hold the Fn key down again, and tap once more on the F8 key.

No display on the external VGA monitor, means you have a bad graphics chipset. Replace motherboard.
Display does show on the external VGA monitor, means you have a problem with;

1) Video Cable
2) Screen Inverter
3) LCD screen

Video Cable:
The Display Panel Cable (Video Cable for Dell), connects to the motherboard by the left Hinge.
Goes under the left Hinge, and up into the Display Assembly.
It then connects to the Screen Inverter, and to the back of the Display Panel. (LCD screen for Dell)

From normal opening, and closing of the laptop, the Display Panel Cable may become pinched in the left Hinge.
This can cause;
A) The connection at the motherboard to come loose
B) The connection at the back of the Display Panel to come loose
C) Stretch the wires inside the Display Panel Cable's sheath, and damage the wires. (Break)

If you are lucky just the connection at the motherboard, and/or connection at the back of the Display panel, may have come loose.

Diagnoses is to NOT just look at the connections, but physically push the connectors of the Display Panel Cable, into the connector at the motherboard, AND back of the Display Panel.

Visually inspect the Display Panel Cable's sheath. Do you see any outward appearance of damage? This means the tiny wires inside may be damaged.
Replace the Display Panel Cable.

Remove ALL power. Remove the AC adapter (Charger), and Battery.
Remove the Keyboard Cover.

Unfasten the Keyboard, LEAVING the Keyboard Cable ATTACHED to the motherboard. Roll the Keyboard over, and lay it upside down on the Palm Rest Cover,

Two Philips head screws at top of Keyboard. After removing, lift the top of the Keyboard up a little, slide it a LITTLE towards the Display Panel.
DO NOT lift it straight up at first.
There are 3 plastic tabs on the bottom of the Keyboard, that slide into the Palm Rest Cover. If you pick it straight up you will break those tabs off ]

In Removing the Display Assembly, note where number 1 points to.
This is the Display Panel Cable's connection, TO the motherboard.

Note where number 2 points to. Those cables going to the Mini-Card Antenna, HAVE to be reconnected, right back to the SAME terminals on the Mini-Card. Make a mark on the cables, and matching marks on the Mini-Card.

Use the instructions in Removing the Display Bezel.
Use the instructions in Removing the Display Panel.

View the last illustration in Removing the Display Panel.
Note how the Display Panel Cable attaches to the Display Panel, and Screen Inverter

Number 2 points to the connection at the back of the Display Panel
Number 6 points to the connection to the Screen Inverter
The Black connector that is not numbered at the bottom, is the motherboard connector of the Display Panel Cable.

This is a better view of the screen Inverter,

Display Panel Cable checks out? Look at the screen Inverter. This small circuit board is located at the bottom of the Display Panel, and behind the Display Bezel. Closer look at link listed above.

Is the cable coming from the Display Panel Cable, plugged in tightly to it?
Does the screen Inverter look damaged?

Post back in a Comment, and we will go from there.

Jun 09, 2012 | Dell Inspiron 1420 Laptop

1 Answer

Fn f1 diidnt do it, hdoes any one no if i can fix it wihout having to replave moniter or connection switch?

I think you are hitting the wrong Function Key combinations. Why are you using an external monitor anyway? What is wrong with the laptop's LCD Screen?

Plug in an external monitor and see if thedisplay shows up on it. It can be any kind of monitor even the old big fat crtmonitors as long as it has a vga cable to connect to your computer's vgaport. If so that proves your video card is ok. The video will showon most systems when you reboot without you having to do anything. Some systemswill require you to hit the FN (Function key) + F1 thru F12. Hold downthe FN key then hit the correct key for displaying on the monitor (F1 thruF12). The correct key will normally have CRT/LCD on it or it will havethe icon of a display.

Each time you press the FN key plus the correct Function Key it toggles the Display between three stages (Show on Laptop only, Show on External Monitor Only, Show on both the laptop and the external monitor).

Apr 09, 2012 | Computers & Internet

1 Answer

How do i connect this compaq presario model to my sony tv?

you need to have a cable converter, VGA to component/rca output

Jun 05, 2010 | Compaq Presario CQ60-220US PC Laptop

2 Answers

I'm trying to hokk up my old dell moniter,i brook the screen


First, make sure that your old dell monitor is working. Also make sure that the VGA out-port on your laptop is also working (by using a known good screen on it first)

Connect the Dell screen onto the VGA port of the laptop, then use "FN and F6" to source to the Dell monitor as external unit. There should be a mini screen that pops up where you can choose the monitor with the FN F6 key combination.

May 18, 2010 | Acer Aspire 5315 Notebook

1 Answer

My screen isnt working after i have taken it out to replace lcd/.. could something be wrong with the motherboard. because i know the lcd is good. also a external moniter works and i can see the data

Verify that the Flat VGA cable from the laptop to the screen is securely locked into place by wiggling it slightly, then seat it and use the original tape to secure it in place. Then follow that ribbon down to the motherboard and make sure it is firmly seated in the internal VGA output socket. Secondly, make sure your white and pink backlight power cable is connected to your inverter while taking care not to bend the inverter. these are fragile and break quite easily. Then check the opposite end of your inverter and make sure the power wire is securely connected (snapped) into place.

Mar 15, 2010 | ASUS A7T-A1 Notebook

2 Answers

Dell latitude d60..the laptop wont display without external monit

Seems that you have a loose LCD screen cable connection. You will need to disassemble the laptop & make sure the LCD screen cable connection is tight.
Please check this link for more details:

Feb 23, 2010 | Dell Latitude D600 Notebook

3 Answers

When i turn on the laptop nothing shows on the screen the screen is black

is it splining the fans,u cn tok to me on

Aug 16, 2009 | Acer Aspire One PC Notebook

1 Answer

Black screen

if you dont have any view on external monitor too  there so 2 reasons for.  1 is mainboard (graphic chip) 2 is LCD data cable that comes from Mainboard and goes to LCD.  need to go to Service 

Apr 17, 2009 | Compaq Presario Notebook

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