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Moving Inspiron 9300 lcd screen to 9400 problem

post #1 of 3
8/27/07 at 11:51pm
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So I bought a Inspiron 9400 with a 2.0 core duo CPU and a Geforce 7800 with a WXGA screen. What I wanted to do is take my WUXGA screen from my old Inspiron 9300 and put in the 9400. So I did that and when I turn on the 9400, the WUXGA screen looks super dim. Like there's no way it should be this dim and I can't even increase brightness with the function, up arrow keys. When I put the screen back into the 9300 it works fine. When I tried the WXGA screen on the 9300 to test, it didn't even show a picutre.

So I'm wondering what's wrong? I reinstalled Windows XP on the 9400 and that didn't seem to help either. So what's wrong? Do I need to upgrade drivers or something? Or can I not transfer my 9300 LG? screen (lgl000) to the 9400 or what?
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post #2 of 3
8/28/07 at 3:31am
The inverter for the backlight is not compatible with the new motherboard. You can transfer the LCD Panel, just not the whole screen.

If your willing to take the screen apart (quite a few people have done this) and remount the new inverter on the old screen (might have a slightly different size), you should be fine.

Some people have claimed that they were able to change brightness in the BIOS.
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post #3 of 3
10/11/08 at 8:24pm
DAM! I wish i saw this before i bought Inspiron 9300 WXUGA screen for my 9400. I had the same backlight-unchangable issue (nor windows nor BIOS).
I thought of the solution myself: used inverter from smashed 9400 LCD on the new screen (it doesnt really fit, had to use some masking tape to hold it together) and now it works great! It is dimmer than it should be, but hey! that is a good thing for me eyes and i totally love it
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