Compaq Presario 700 470024-192 Notebook Logo
Posted on Dec 31, 2008
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Compaq Presario R3000 dim screen but not dark

I have a compaq presario r3000 which is having a lighting problem. I removed the inverter and lcd from my other compaq presario r3000 (which work fine) and switched them w/ the lcd and inverter in my compaq with the bad lighting. The laptop was still dim (not dark). When i placed my "bad" lcd and inverter in my other laptop they worked fine. Since my problem is not the lcd or the inverter, i am lost as to what to do next. It's not my laptop button that when pressed makes the screen dark. I think i should clear up that my screen is not dark. I can see images just fine, however, it is not as bright as it once was. I can still use it, but it's a nuisance when i have to use it at night.

  • gr568238 Jan 01, 2009

    thank you so much, i feel so stupid. It always is a simple problem like that. I'm a bit pissed that i opened two Compaq's for nothing but at least I got some experience out of it. Thanks again.

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  • Posted on Dec 31, 2008
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Joined: Dec 28, 2008
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Sounds like the auto-dim in the BIOS is set too low. Fortunately the Compaq R3000 allows you to adjust the brightness right from the keyboard. Hold down the [FN] function key while tapping the [F8] key will brighten the screen, while [FN]-[F7] will dim it. The settings are different for running on AC power and battery, so you must do each individually.

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The problem you described, is related to the inverter board.
There's a little board, that take care of lights on the monitor. You must replace the inverter board to solve the problem.

Here you have an image, of an inverter board.

ed452f58-06a1-44e2-8fe4-71fd08bc1dd5.jpg

Good luck, and be safe!
Inverter boards, it's dangerouse to replace yourself if you don't know what you are doing. High-Voltage inside :)
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