Question about Sony VAIO PCG-K23 Notebook

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When the Sony Vaio laptop is powered up there are missing(dark)

I checked the connection behind the LCD and at the system board to no avail.
I'm thinking it might be the cable or the system board.

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Connect an external monitor to the video connector on the laptop and bootup the laptop. If you don't get an image on the external monitor then press the blue Fn key plus the one of the function keys with the screen/monitor symbol, (this toggles the display between the LCD and external video connector).
If you cannot get an image then the you have a faulty video card. The video card is part of the motherboard and cannot be fixed, you have to get a replacement motherboard.

When you boot up without the external monitor and you look at the LCD from an acute angle and you can see a slight and dark image, this indicates you have a backlight problem.
The image on the external monitor indicates that you have a faulty inverter that provides power for the backlight panel or a faulty backlight panel, the inverter and the LCD panel can be replaced fairly easily but it is not cheap, but it would be cheaper that buying a new laptop.

If the external monitor works and you can use it this way, this would be the cheapest option, but it would not be portable.

Posted on Feb 12, 2009

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1 Answer

Sony vaio pcg7d2l display


2 probable causes:
1. Inverter board is bad (which is the little board the lcd connects to)
2. GPU is bad, if you need an explaination of what that is click here
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May 04, 2013 | Sony VAIO PC Laptops

1 Answer

DARK SCREEN SONY VAIO VGN-NW150J


replace the inverter board it connects to the screen and, is usually at the top of the laptop under a panel between the screen hinges

Feb 04, 2013 | Sony VAIO VGN-NW150J/S Notebook

1 Answer

My screen is white


Sony Vaio is one of the most prominent brands of laptops on the market, and also one of the most expensive. The laptops, created by Sony, are known for their efficient processor functionality and sleek designs. While the Sony Vaio line of laptops are considered high-end, they are also prone to display problems.

Symptoms
Among the problems facing Sony Vaio laptop screens are blackouts. When these blackouts occur, the monitor turns solid black, and upon rebooting the laptop, light will briefly flash on only to blackout again. Additionally, there have been reports of an issue which causes the screen to flicker intermittently until it goes out all together. b> Troubleshooting b> Blackout displays and the continuous flickering of Sony Vaio screens can be caused by various issues taking place inside the laptop. It is not necessarily true that the problem lies within the LCD screen itself, with display issues often occurring as a result of problems with other parts of the laptop. You can test whether or not the screen is defective by connecting the laptop to an external monitor. If the display comes up normally, then the problem lies within the laptop's LCD screen. b> Parts b> If your Sony Vaio is connected to an external monitor and suddenly goes black, then the problem may have to do with the laptop's sleep button. The sleep button latch located inside the device may be jammed or broken, thus putting the screen in a permanent sleep mode until the latch is fixed. Encountering hissing sounds when the laptop is running indicates a faulty circuit board, usually damaged due to overheating. Display issues can also occur when certain parts of the laptop, such as the hard drive, have been replaced. b> Design b> Some owners have made complaints about Sony Vaio design flaws, specifically mentioning defects in the laptop's boards. Among the problems discovered after opening the laptop include burnt LCD fuses, as well as worn out circuits and internal latches. Some of these events may occur even in newly purchased units. Sony has not yet responded to various consumer complaints and has not yet issued any recalls in response to reported problems. b> Repair b> When repairing a defective Sony Vaio laptop screen, it is important that owners remain aware of the nine screws which hold the laptop cover and the board together. Not doing so can easily lead to further damage to the Vaio due to static electricity, and may even lead to a short circuit. For owners who are experienced in the area of laptop repair, parts are readily available for purchase, allowing for cost efficient repair. b> Extended desktop 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

Jan 28, 2013 | Sony VAIO VGN-CS204J/W 14.1" Notebook...

1 Answer

I have windows 7 and a pretty stock sony vaio VPCEH12FXB laptop and for some reason my webcam wont work. whenever i try to open it or use oovoo it just tells me that my webcam is either not connected or in...


If your webcam worked before this problem then you probably have a hardware issue. The webcam is installed on your LCD display panel. This is connected to the system board via a cable. It's possible the cable became dislodged from the webcam or the system board due to opening the LCD display to use the laptop.
Go to device manager to see if the webcam appears in list of devices. If not then
you will need to have the laptop repaired by Sony or competent repair shop.

Sep 28, 2011 | Sony VAIO EH1 Series Black Computer...

2 Answers

I have a vaio PCG-61313L, i replaced the screen because it was broken, when i test the new screen, i got no backlight, i try to replace it with the old one but got the same problem, backlight was gone....


Hello,

The problem is not with the screen. If you turn on your laptop in a dark room and you put a flashlight on your screen, you will get a very faint display. The problem seems to lying with the inverter.

The inverter is a electrical device which 'backlits' the LCD and gives the display. Without the inverter and the bulbs it powers, the screen would be too faint to be seen.

To test if the inverter is defective, just turn on your laptop in a dark space, then put a flashlight on the screen to see if you have a fainted display. If you can see something, it is the inverter which is defective and should be replaced.

If you are handy, you can also remove the screen cover to see if there is a neon like light which lits up behind the LCD. If you can see the light, it means that the inverter is just working fine and that the is with the LCD itself.

jbertrand_ba.jpg
Picture of an inverter.

Replacing the inverter:

1. After removing the screen 'cover', locate a small circuit board (usually below the LCD). Unplug the electrical cables and replace.

In your case, as the LCD has been replaced, check if the cables are well connected to both ends of the inverter. If the cables are well connected, consider replacing the inverter.

May 17, 2011 | Sony PC Laptops

1 Answer

SONY VAIO PCG FRV27 I power on the laptop and the screen shows up but its very dark i adjusted contrast but it is not very visible


Diagnosis:
1. Test using an external monitor. If it works, then either the screen bulb or the inverter board might be defective.
2. Test the inverter. Easiest way to do it if you have a good screen with a good bulb. Connect the good screen to the inverter board & test it. If it lights up, then the inverter board is good. If it did not, then the inverter board is bad & needs to be replaced.
3. If the inverter board is good, then we are left with the possibility that the screen bulb is bad. To fix this, we will need to replace the LCD screen

Oct 06, 2010 | Sony VAIO PCG-FRV27 Notebook

1 Answer

How to check mbx-160- vaio


I HAVE A SONY VAIO LAOTOP VGN-N31S DO NOT START UP. LED LIGHTS ARE ON. SCREEN IS DARK. CAN ANYONE HELP

Feb 20, 2010 | Sony PC Laptops

1 Answer

The screen is white >>>


Your inverter board is OK otherwise you will not get any light on the screen, there is only one inverter board, Check the flat ribbon cable connected to the LCD panel (locate behind the LCD panel), when this connector comes off you will get white screen.

Nov 06, 2009 | Sony VAIO VGN-CR510E/T 14.1" Laptop

3 Answers

Sony Vaio Display problem


Hi,

Since the Sony Vaio VGN-CR220E works except that the display is dark, then it would be safe to assume that it is only the LCD display part that is the issue. Often LCD display (of laptops) are working but only that you can not see the actual display. One way to verify is to shine a flashlight at an oblique angle to the screen, semblance or part of the desktop could be seen s what you have done. If the desktop could be seen (albeit very very dark background) then it could either be the CCF Lamps (cold cathode florescent) or the inverter that powers the lamps.

Often, the defective component would be the inverter. It is relatively easy to replace the inverted. It is sometimes more difficult and challenging cracking open the casing of the display panel of the laptop than replacing the inverter. Additionally, inverters are readily available online. It is also not surprising that inverters for other brands/models would also be used in your Sony Vaio VGN-CR220E .

Of course another possibility is that there is just a loose connection or a cold solder in the LCD panel display's circuit boards.

This would be a good place to start for inverter boards. This is a nice tutorial if you are considering a DIY.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

May 08, 2008 | Sony VGN-CR220E/L Notebook

3 Answers

Sony vaio screen dark then light


might be going into a powersave after it boots...try checking the power options

Feb 28, 2008 | Sony VAIO PCG-K35 Notebook

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