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Lcd screen faint display works ok with external monitor. model argo c

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  • Anonymous Dec 24, 2008

    Faint screen

    Diagnosed to be the inverter - ordered on ebay £16 will fix the problem


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Mine was the same - very feint writing but external VGA was OK

It is the inverter located at the base of the screen

Did a google on the part number on the bit (ASO23170376), sent me to ebay when I ordered for £16

Easy to fix - just 2 plugs

Posted on Dec 24, 2008

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Could be the backlight of the laptop. When the laptop is running try tilting the screen back and forward till you notice what may be your OS...

If so your gonna have to contact a local repairer for your laptop brand...

Posted on Oct 14, 2008

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Have power but no Display


Bonnin, Can you see a faint image on the screen? Have you tried to hookup an external monitor?
IF you can see a faint image on the screen, and a normal image on the external monitor, you have a bad power inverter (for the lcd screen) or a bad back light (in the lcd screen).
Take laptop to a shop to have them verify.
Hope this helps.

Nov 24, 2013 | MSI Computers & Internet

1 Answer

Laptop, display problem


Hi,
Dear User..Does the Screen have a displayed Image?

If the laptop has no image at all it can be video card or LCD cable or the LCD panel. About the only non-invasive test you can try is to plug an external monitor into the laptop. This will determine if the problem is motherboard/graphics card or lcd cable/lcd screen. If you have an image on the external monitor then its likely to be lcd/cable/lcd screen.

Is the Displayed Image Faint?

A dim screen can be caused by three things;

1/ The LCD inverter which runs the LCD backlighting

2/ The CCFL backlighting fluro tube in the LCD panel

3/ The motherboard supplying signal & voltage to the inverter.

Thanks

Jan 30, 2013 | Computers & Internet

1 Answer

I have a Sony vaio PCG 5K7P, and it's not getting started...when I switch it on...only the fan works and the lights on wifi and the charger are working....no display on the screen and no processor


Laptop on, shine a flashlight at the LCD screen at various angles.
If you see a faint image the problem is the Backlight, or screen Inverter.

90 PERCENT OF THE TIME the fault can be attributed to a bad screen Inverter.
(IF the laptop uses a screen Inverter.
CCFL backlighting uses a screen Inverter.
LED backlighting may, or may Not use a screen Inverter)

No faint images?

See if the problem is the graphics chipset, or Video Cable, or inside the Display Assembly.

Graphics chipset:
Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port, on the laptop.

This is an example of a VGA Cable, and VGA connector, (port),

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

Scroll down a little for cable example.
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.

Turn the monitor on. If a CRT type of monitor allow it to warm up.
Turn the laptop on.
By factory default settings, the display should show on the external VGA monitor.
IF not;

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, and at the same time tap once on the F8 key. (The F8 key is the Display Toggle-Over key)
Still no display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F8 key.

No display on external monitor, suggests a problem with the graphics chipset.

Most of the time the graphics chipset itself isn't the problem.
It is due to inadequate cooling for the graphics chipset, and this causes a problem with the MOUNTING, of the graphics chipset TO motherboard. (BGA surface mount)

If this is found to be the problem I will go into more detail.
I don't believe that is your problem, but there is NO guessing here.
We are following a diagnostic flowchart.

Good graphics on the external VGA monitor, means there is a problem with the Video Cable, or inside the Display Assembly.

A) Video Cable connections can be loose.
Connection at motherboard side, or connection of small cable to screen Inverter from Video Cable, (IF it uses a screen Inverter), or connection at back of LCD screen.

A LOT of times a loose connection can cause what you are seeing.

Video Cable could be damaged. Wires inside stretched/broken.

Inside the Display Assembly:
Video Cable checks out after a continuity test, then the screen Inverter is next in the diagnosis. (IF a screen Inverter is used)

Screen Inverter proves to be good, the problem is the LCD screen.
NO screen Inverter is used, the problem is the LCD screen.

Sony drives me crazy with their model numbering system.
What is the other model number on the bottom of the laptop?
Start with a VGN?
Post back in a Comment.

Once I have a model number I can deal with, I will post back with step by step info, and additional manual information.
(Service Manual. Perhaps pictorial guides, and video/s)

Regards,
joecoolvette

[Chip and Chipset are slang terms for I.C.
Integrated Circuit,

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

The I.C., or chipset for graphics, is the graphics chipset; or more properly known as the G.P.U.
Graphics Processing Unit,

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

Jan 22, 2013 | Sony VAIO Computers & Internet

1 Answer

Why does Sony laptop screen stays black when booting?


Shine a flashlight on the dark screen to see if you barelysee the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can beany kind of monitor even the old big fat crt monitors as long as it has a vgacable to connect to your computer's vga port. If so that proves yourvideo card is ok. The video will show on most systems when you rebootwithout you having to do anything. Some systems will require you to hit the FN(Function key) + F1 thru F12. Hold down the FN key then hit the correctkey for displaying on the monitor (F1 thru F12). The correct key willnormally have CRT/LCD on it or it will have the icon of a display.

If you see no icons by shinning a flash light and the external monitor works,then your screen is bad. If you see no icons by shinning the flash lightand nothing shows on the external monitor, then most likely your video card isbad.

Mar 31, 2012 | Computers & Internet

1 Answer

Hp pavilionn dv6700 screen goes black after a while


If you shine a flashlight on your black screen and look real hard for the icons on the desktop. If you can faintly see them that means your LCD Inverter is bad. You'll have to disassemble the LCD Screen to get to it. In the mean time you can attach another monitor (LCD Flat Screen or the Old style fat CRT) with a VGA cable to the vga port on you laptop. Once you have it connected hit the FN (Function Key) + (F1 thru F12) key that that corresponds to the external display. Hold the FN Key while you hit the Function Key that is for the external display. The key might have the words LCD/CRT on it or it might show a display symbol. That's the key you want to hit while holding down the FN key. This will cause the desktop to display on the external monitor and verify that there is no problem with your Video Card inside the laptop.

Mar 15, 2012 | Computers & Internet

2 Answers

When i turn on my dell vostro a860 the screen is black.When I plug in external monitor shows pictures on both (monitor and laptop).When I disconnect external monitor the laptop works fine.The trouble is...


Windows Vista® 1 Right-click an open area of the desktop. 2 Click Personalize. The Personalize appearance and sounds window appears. 3 Click Display Settings. 4 Select the external LCD monitor in the drop-down menu.Monitors and Displays 51 5 In the Display Settings window, move the Resolution slider bar to the left or right to select a screen resolution that matches the native resolution of the external LCD monitor. 6 Click OK. Windows® XP 1 Right-click an open area of the desktop. 2 Click Properties. The Display Properties window appears. 3 Select the Settings tab. 4 Select the external LCD monitor in the Display drop-down menu. 5 Under the Screen resolution section, move the slide bar to the left or right to select a screen resolution that matches the native resolution of the external LCD monitor. 6 Click OK.

Jan 02, 2011 | Computers & Internet

1 Answer

Lcd blanks out


Yes, that is one possibility. It could be the cable from the motherboard to the display. Inverters are fairly common problem.

May 14, 2010 | Toshiba Satellite 1805-S204 Notebook

2 Answers

Display is very faint, disappears


replace the inverter board below the lcd panes  with same part number.if it is in india i can help you

Mar 10, 2009 | Dell Latitude 110L Notebook

1 Answer

Plugging into a different screen doesn't work


The Cold fusion lamp in your LCD and or the invertor board for the LCD could be bad that is the reason why a faint image . As for the external monitor you should enable it by the Fn+F5/F6/F7 key by pressing it twice at boot up before windows is fully loaded - this to ensure that the external monitor works with your laptop . If the resolution setting and frequency is not comaptible with external monitor you connect then you wont have display on your external monitor . Start windows in safe mode .

May 13, 2008 | IBM ThinkPad G40 2388 Notebook

1 Answer

It's all black


If you power it on, take a flashlight and shine it on the lcd at and angle and look real close to see if you can see a faint image. If you can, then your backlight in the screen is not working.
Also, you can attatch an external monitor to it, while its off, then power it on and see if it lights the external monitor. Try that and let me know your results.
If you get a picture ok on the external, and you can see a faint image on the lcd using a flashlight, then it could be the backlight inverter board or the bulb itself inside the lcd went out.
If you don't get any picture at all, using an external monitor and can't see a faint image on the lcd using a flashlight, then I would say there's other problems with the laptop itself. Could be a mainboard problem, power issue, etc..

Oct 24, 2007 | Compaq Presario X1000 Notebook

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