Having problems with your Panasonic Toughbook 28 Notebook ?

Color Display on Panasonic Toughbook CF-28 is dull

\015 My toughbook must have a transreflective screen because I can see my screen when sunlight is lighting it up. Indoors, however, the colors are dull--blue is teal, red is pink etc. When I use it indoors it is plugged in with the correct voltage adapter. I have tested it with an external monitor and the colors are perfect on that monitor, but not on the toughbook. What can I do to have the colors just as bright indoors as outdoors? This is not under warranty, so "Customer Service" is not an option. Thanks.\015

Answers :

You most likely have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-
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:

\015\012
    \015\012
  • 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.
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 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.
Repair Help & Product Troubleshooting for Panasonic Toughbook 28 Notebook

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