Apple :: LED Bulb Life - Screen No Longer Even Turns On Which Means The Backlight Is Dead
Jan 9, 2009
In the past, I used to have an hp pavalion laptop. I usually kept the screen at a little past half brightness and in 3 years, the screen no longer even turns on which means the backlight is dead. The same thing is true for my mother's 17 inch lcd monitor. Now I realize that this may just be bad luck, but I don't want to risk anything with my new macbook.
What's a "safe" level to leave the brightness at? And is the LED long lasting? Is it expensive to replace? I hate dim screens but I don't want this screen to die that fast, I want to make this last AT LEAST 8 years.
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May 3, 2009
Problem with my 2 week old sony vgn-z540 laptop.
Heres the problem:
When I try to use the brightness level in between LOW and HIGH, my LCD backlight would go off, and the screen would be dark and almost not visible at all. There are also vertical bars at random spots, stretching from the top of the screen to the bottom of the screen. I can only use it with either LOW setting or HIGH setting, nothing in between.
This problem just started on its own. I have not installed anything such as drivers or programs. No updates(was updated after the problem occured to try to fix it).
I love this laptop to death and has been the best laptop in the past 15 years. I would hate to see it go so I need this fixed.
I will update later with pictures when it gets dark here b/c the pictures now are not showing up with the bars.
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Jan 18, 2009
I have a DV9000 and just yesterday it started where the screen will go black but I can see what is going on on the screen but it is extremely faint. When I close the lid for a few seconds and open it back up it the screen appears like normal but only for about twenty seconds and then returns to the black. If I hook it up to an external monitor and I can see what is going on.
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Jan 14, 2009
I'm having this problem with my Pavilion dv9700.
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Sep 29, 2014
When powering my lappie on, I can hear the fans and the hard drive start, the lights come on but there is no backlight on the monitor. I did a hard boot but nothing. I tried to get into bios pressing ESCAPE or F10 after restart but same nothingness. If I can't get my lappie working, I would at least like to get data off it.
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Mar 8, 2010
I noticed last week that the back light option on my keyboard no longer functions.I know the Fn key works on the keyboard as I can perform other Fn+ tasks and I know that the right arrow key (which is the same combo key that controls back-lighting) also functions on it's own.
Aside from normal Windows 7 updates, the only changes to my laptop recently has been flashing to the A07 bios and the new power supply mailed out by Dell.Am I missing a software option somewhere that defaults my back-lighting to off? Or is it a mistake (or intention) of the A07 bios to disable this feature given the recent power supply throttle issues with this model laptop.
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Jan 22, 2009
Now almost always when I trying to resume from standby on battery MBP isn't turning on backlight - I can even see MAC OS working normally but screen is off.
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Dec 24, 2014
IÂ have a Dell Precision M4700 and am trying to use the keyboard backlight.Â
The problem is that even a short pause in typing, the keyboard backlight goes out. (about 5-6 seconds). It does not go on until I hit another key, (which then types that character, which I then have to erase).
Is there a way to set the keyboard backlight delay to a longer setting?
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Sep 9, 2009
My mom's XPS 1330 just had its backlight give up the ghost and it's of course post warranty, so I'm wondering a couple of things:
1. How much that repair is going to cost and
2. Is there a place that is great for this?
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Jan 16, 2009
Do slower processors give longer battery life? How much of an effect?
I'm looking to get a Studio and wonder whether I should consider a slower processor for that reason. If it bogs down under Vista, however, that's not good.
I want to get the 9-cell battery.
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Oct 19, 2013
I recently had my computer wiped and reloaded, due to a wifi connectivity problem. Now the wifi adapter is working, but my backlit keyboard no longer turns on.Â
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Jun 19, 2009
I recently took my Compaq Presario C714NR laptop on a road trip, and one day some water spilled on the case without me realizing it, so that the case and laptop were wet when I got to my hotel room. The screen no longer illuminates - I can just barely see the proper windows and images on the screen if there is bright light in the room, but it's nearly invisible. I assume that either the backlight is dead or that a wire/connection to the backlight is loose or shorted.
Several months ago I had to replace the screen when the laptop was dropped and the screen broken (bought a new replace ment screen through eBay, replaced it myself), so the screen has had a bit of a hard life.
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Jul 23, 2009
Got my MBP yesterday. It came with a 9CC2 screen, which is supposedly AUOptronics.
Contrast is very high, I reckon above 800:1. Colors and viewing angles are very good too. It has one problem: brightness.
I used it outside with sunlight but the backlight was not strong enough to overpower the reflections. My MBA was much brighter, and also the 9C89 screen on my first uMB was brighter.
When I'm working inside the house during the day I'm usually on 1 or 2 stripes from the max.
It's a not a huge problem for me because I did not really plan on keeping it for long but if I buy again I'll probably try to get another screen. Expecially the MB April 2009 screens interest me. I've never seen them in real life though.
Here are some pics of it next to an Asus 1101HA which was measured at 129 nits max by Notebookjournal.
The first three are on full brightness, than half brightness. Keep in mind that photographs can not really give an accurate impression of brightness levels.
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Jun 22, 2009
My mac book pro 15" next gen has now only 16 colors no matter what i do like no matter how many times i reboot or shut down or reset my hardware i only now get 16 colors.
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Mar 29, 2008
I am at my wits end with my e1705. I had a sudden meltdown about 2 weeks ago... screen went scrambled, BSOD,etc...
Performed diagnostic, memory on video card came back as bad. Replaced with new card (from Dell), reinstalled OS, completely reinstalled nVidea drivers from Dell (Used driver cleaner too)...
Everything went smooth for a couple hours after this was completed yesterday (full diagnostic showed no errors), but after booting up today, after about 5 or 10 minutes of use screen freezes and turns either solid cyan or black... a small pattern of thin lines appears also.
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Feb 14, 2013
At first it was win 7 and all the things worked fine. But after upgrading to win 8, wifi bulb is always lighting..i can on/off wifi from the key board.but light is not getting off. it always lighting from the boot time to shutting down..hep me..i updated all the drivers but nothing worked.
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May 23, 2009
My friend's macbook (white plastic, 2.0, napa/core2 before santa rosa platform) isn't starting, and I have no idea why. He initially asked me to replace the top and bottom casing. I accepted, and ordered the parts. Around the time they were supposed to come, I took the computer apart completely (required for the repair), but one of the parts was delayed, so the computer sat splayed on my desk for a week. I didn't exactly stack textbooks on it, but it also wasn't covered in anti-static wrap. So, now, I finally got the part and put it back together, and the computer doesn't start. At all. The screen doesn't go grey, the 'sleep' light doesn't turn on, the fan doesn't start - nothing. The magsafe light is green, so the power is going in. It's also worth noting that I have no battery for it, so it's all on A/C.
Does anyone know what's wrong? My two hypothetical solutions are (a) I need a battery, or (b) the logic board is dead due to static.
How likely are each of these scenarios - especially the logic board one? How possible is it that it was static overloaded?
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Feb 25, 2009
I was browsing the internet a day ago and I was on a "COLLEGE" website so i know this is not due to a virus. At this time all of a suden my screen went black.
I powered the laptop off and turned it back on, The Dell logo appeared but the screen was fuzzy and had some "tearing" i dont really know what to call it but it doesnt look right. Kind of like an old VCR playing videos. The screen then whent black after the windows xp splash screen. The laptop still boots to windows but it does not display anything.
I booted into safe mode, everything functions correctly and the way it's supposed to. I then booted into VGA mode same thing everything functions and works the way it is supposed to. I also ran some virus scans just incase, nothing was found.
Whilist in safe mode i changed the resolution down to 800 x 600 and still no luck after booting in regular mode.
In VGA mode i tryed to change resolution and the screen displayed some blue fuzzy lines then whent black.
After this I booted back into safe mode and done severeral diffrent System Restores at diffrent dates. Still no luck
After going through all this I am assuming this is a GFX card problem. The laptop is about 3 years old and ive played games pretty hard on it ever since. The card has defenitly gone through some some stress. Can anyone confirm this?
I know that the i9300 sells for about 400 working, and i checked on ebay for a card that is a whopping 180 bucks. Id just assume buy a new laptop. Then sell the i9300 laptop for parts because everything else works fine. Or maybe buy the card swich it out and sell it for a price. Maybe there is a way to fix it i dont know. can anyone help?
Lastly, i thought i would add that when i check the bios the card is recognized and it displays all the correct info for the card. IS there a way to tell for 100% that the card is bad?
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May 26, 2010
I have an HP G60-247cl Laptop that will turn on, and the fan is running. However, the screen is blank and there seems to be no response from the keyboard or mouse, and an external monitor will not work either.
If it is the switch, where is it located, and how much trouble is it to get to?
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Jun 22, 2009
I got my E6400 last week and I found that everything all right except the color of LED screen, it's awful.
The color of the screen is pale, i had tried to calibrated the graphic settings but it doesn't improve too much.
Also, i saw some posts here said that the LG screen is better than the Samsung screen, but I can't agree with that because my screen is LG.
Is it normal for LED backlight screen that the color is more pale than the CCFL backlight screen or just the screen of mine had some problems?
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Feb 15, 2009
new screen/inverter/ backlight installed. NEW screen still black, but visible with flashlight. Went ahead and got ANOTHER inverter off eBay and tried that - screen still black. Haven't ever replaced a backlight, and the operation looks delicate (and expensive to HAVE done) ...
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Feb 13, 2009
Unfortunetely I received a unit with uneven backlighting on the screen (9C84), with a few column of light bleed towards the center that goes from the bottom of the screen and reaching up past mid screen. It is not visible with normal use, but on dark solid backgrounds, or when watching movies with dark scenes, it is definetely there.
Do all unibody MBP have this backlight bleed problem? Are there ones out there with perfectly even backlighting or atleast with very very minimal bleed? Just trying to find the statistics of this problem. I will be going to the Apple store this weekend to check out the MBPs they have on display to see how widespread is the problem.
If this is indeed a problem for all unibody MBPs, then I wont even bother and just accept what I have on a premium product.
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Apr 17, 2009
can the iMac screen backlight be turned off completely?
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Feb 28, 2010
dell inspiron 1525 Laptop and I've been having this problem for 2 days now .. when I try to shut it down ..
only the screen turns black but the HD and everything is still on !! and I have to press the shut down button to shut it down !!
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Nov 5, 2008
My laptop would not turn on at all and no lights came one so I bought a new motherboard.
Ive installed the new motherboard, but now when I turn it on the lights turn on, the fan spins, the dvd drive clicks a few times but the screen stays blank. Nothing comes on even after a few minutes. I disassembled the entire laptop again and put everything back together but still nothing comes up on the screen. I reseated the RAM and HDD but still no luck.
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Jun 25, 2014
I bought this Envy 17 3D in December of 2010 from HP Websight. The Model is WY771AV  and runs Windows 7 with 1080P and Uses A M D 5875 Graphics. The Last 30 days, @ boot-up, the screen will turn solid white when I try to start it up. All I can do is hold power button down to power off and retry. 9 0 % of time, retry fails(does same thing), but occasionally I can go to startup repair , run system restore and use machine for 2 or 3 times before the next white-out.
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Aug 20, 2013
I have Hp G42, and recently a problem has created. all the black colour of my screen turn into red colur. i check the driver and update that also. no improvement. startup screen also shows red colour.
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Sep 15, 2014
I recently bought a Lenovo G50-70 and the only main issue i'm facing is that it won't shut down. When I press shut down, the shutting down icon shows up and then the screen turns off but the laptop remains on (the lights below the touchpad remain on and i can still hear the fans running)...
I decided once to leave it like this and see if it'll shut down later. I came back to find it still on and it was hot and the fans were making more noise than they usually do.
To shut it down all i can do is forcefully shut it down by pressing the power button which i would like to avoid doing...
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May 5, 2010
Is this the backlight? i hot glued the connector and wires in the socket into the inverter....?
I have replaced the inverter AND the flex cable (yes, the part numbers are right)
I have to shake or pressure point the left-middle of the screen for it to stop otherwise it stays unreadable...
when i hook it up to an external monitor...
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May 15, 2009
First off before I get into the problem I want to say that I am an experienced computer technician having worked on hundreds of laptops in the past. So I'm very familiar with the problems and solutions for them.
I just want that disclaimer to be up front that I'm not a rookie seeking laymans terms or solutions.
Anyway, that aside. A customer dropped off an Inspiron 5160 last week. The system wouldn't half power on he said so after testing, I determined that the AC jack was 'broken'. Sure enough after disassembling the computer I could see on the bottom of the motherboard where the AC adapter had been knocked loose.
I replaced the motherboard and immediately noticed that the screen would display the BIOS Dell logo for about 5 seconds, and then cut off.
With a flash light I could see the data images on the screen, just no CCFL light from the bulb to brighten the screen.
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