Having problems with your IBM ThinkPad T23 2647 Notebook ?
Laptop screen goes black, no backlite
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\015 IBM Thinkpad T23 Laptop. About 4-5 years old. Screen no longer functions - flickers and goes to black. All else working fine.\015
To determine if you have a LCD screen or video card problem, read this and follow the instructions.
Defective CCFL backlight, it may have the following symptom:
- Screen flashs on red/pink and off. \015\012
- Picture stays on in red and slowly be come normal. \015\012
- Picture flickering with dim display or appear black. \015\012
- Picture flickering on and off.
Connect an external monitor to your laptop and power it up, 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.
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