I have sony vaio vpceh25fd ,my screen was broken but was still working before i replaced it to a new one,after replasing the screen i am having a very dim display.even i tried the previous (broken lcd) its still giving the dim display

SOURCE: 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.

SOURCE: Dim LCD display

ccfl tube goes down or inverter cirucuit is fail
need to replace it

SOURCE: Sony Vaio Laptop Display Screen problem

even if ur in warranty period they wont change ur display so try to take any serivece center and change other wise in any laptop try to get
any help so first just see sony engineer get his assiant usually they use have contact where u can get serviced

SOURCE: my sony vaio vgn-n365e screen is Dim

The fault could be a faulty CCFL lamp or inverter.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

SOURCE: how do you replace a sony vaio ux lcd screen?

Basically remove all screws holding the front bezel (screws are behind the rubber thingies). Once you have pried off the bezel there are several screws on each side of the screen. Removing these will be needed, along with any remaining screws on the top and bottom. Once the screen can be leaned forward, with a sheet of paper towel, on the keyboard. There is a long connector at the top of the screen; remove this connector. Another smaller connector is at the bottom, remove it as well. This ought to get you well on your way!