Question about Panasonic Toughbook 48 Notebook

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Dark screen but just replaced it

I have a cf-48 that the screen and the motherboard are different mk's. but i cant get the screen to work right its dark i just replaced it because the last one did the same, but it will work on a external monitor. i have tried everything i can think of checking brightness, drivers, whatever. can anyone help

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Re: dark screen but just replaced it

I have a compaq laptop Hp 5000 the screen was black and I took the batterie out for a few minutes pluged the unit in and shut it back down and put the batterie back in and now works

Posted on Apr 09, 2008

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Re: dark screen but just replaced it

The problem is not the screen but the inverter board inside the laptop, it supplies high voltage to the internal fluorescent (cold cathode) bulbs that back light the display. Lots of these available on ebay and they plug right in, no soldering is necessary. I cant imagine both screens had bad cold cathode lamps. Generic answer to all dark screens on laptops

Posted on Jan 26, 2008

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