Malamamoto
asked on
dim laptop screen
Hi,
I have a laptop that, at first, was having horizontal lines across the screen. So I replaced the screen. the new one doesn't have lines on the screen, BUT now the screen is very very dim. To the point that you can hardly tell it's on. So I replaced the motherboard, same problem. So I replaced the inverter, same problem. I've run out of ideas here. Do you have any?
Thanks!
I have a laptop that, at first, was having horizontal lines across the screen. So I replaced the screen. the new one doesn't have lines on the screen, BUT now the screen is very very dim. To the point that you can hardly tell it's on. So I replaced the motherboard, same problem. So I replaced the inverter, same problem. I've run out of ideas here. Do you have any?
Thanks!
ASKER
So I replaced the inverter, same problem.- malamamoto
Forgive me if this is stupid, but you have it plugged into an outlet right. All notebooks are DIM on batteries to conserve the battery.
Windows what?? Adjust brightness?
Model to avoid for others?
Windows what?? Adjust brightness?
Model to avoid for others?
ASKER
yes, it's plugged into an outlet. and I did try and adjust the brightness via keyboard dim settings.
this happens before windows loads. But it's Windows 7 Home Premium
this happens before windows loads. But it's Windows 7 Home Premium
Thanks for the update.
Have you checked the manufactures web site for newer video drivers?
Or for known issues?
Have you checked the manufactures web site for newer video drivers?
Or for known issues?
ASKER
No I haven't, but this completely seems to be a hardware related issue because it happens in POST mode as well.
Perhaps the replacement screen was bought used? It's possible you purchased a defective or EOL replacement screen, given all the other components you've identified have been replaced. Do you have another screen you can swap?
I infer by your comments that the video card is integrated into the motherboard? If not, have you tried a replacement video card? If dimming wasn't an issue prior to replacement of the screen (only lines as you say) this would generally indicate all other components were OK (with regard to dimming) and that it's the replacement screen with the issue.
I infer by your comments that the video card is integrated into the motherboard? If not, have you tried a replacement video card? If dimming wasn't an issue prior to replacement of the screen (only lines as you say) this would generally indicate all other components were OK (with regard to dimming) and that it's the replacement screen with the issue.
did you test with an external monitor?
that will show if the video card is ok
that will show if the video card is ok
ASKER
Yes, tried with external monitor and it's fine from there.
ASKER
I actually tried two different lcd's screens and they're both doing the same thing.
are the new screens the original ones? or "compatible"? that can be the cause
ASKER
I think they're "compatible" ones. I can't speak for the old screen, but the new one is not OEM.
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ASKER
bad replacement monitor was the issue.
tx for feedback
http://ask.metafilter.com/92210/Backlight-or-Inverter-How-can-you-tell