I have aspire 3000 with new inverter and backlight. When I start the laptop I can barely see what's on the screen, I plug an external monitor and everything is fine. I try to plug the laptop screen to another ,same aspire 3000, laptop and it works well. What is the problem. All my drivers are up to date and I run windows xp
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Display Configuration A flickering screen may be caused by the computer detecting incorrect display settings as it starts or returns from sleep. It can also come from changes to the screen resolution settings caused by a new program or update installation. Verify screen resolution before assuming the issue is hardware related. Faulty Inverter Next to the display screen behind the plastic screen bezel is a small component called the inverter, which supplies power to the screen backlight. The flickering indicates the power is not reaching the backlight. To fix the issue, replace the inverter. Faulty Connectors The wires and cables traveling from the display around the hinges and into the motherboard tend to wear at the hinge area. Over time, the opening and closing of the screen causes this wear. The solution is to disassemble the plastic casing of the laptop, reorganize the cables so they have no interference from hinges, or replace the cables and connectors with new ones made specifically for the computer make and model experiencing the issue. b> Test an LCD Inverter An inverter is an electrical device on the bottom of your laptop screen. The job of the inverter is to convert DC electrical current to AC voltage to maintain power to the backlight lamp. If the display on your laptop is dark but working, odds are the inverter or the lamp are at fault. When troubleshooting monitor problems on a laptop, you may need to evaluate the inverter to determine which of the two parts is malfunctioning.
Remove the screen bezel on your laptop. The bezel is the piece of the computer casing that surrounds and protects the LCD screen. To remove the bezel, remove the screws around the screen. Bezel removal method may vary by model. Once the screws come out, the bezel should pop off. The inverter will be under the screen. Attach the positive probe (+) of a multimeter to the pin 1 on the inverter. The inverter has two connections, one on each end. With the laptop screen facing you, look at the left side of the inverter. Pin 1 is the top metal flange pointing to the right. Secure the negative probe (-) of the multimeter to any bare screw. There should be a screw securing the inverter to the laptop that will be perfect for the negative ground connection. Turn the laptop on to test the inverter. Turn the multimeter on and check the multimeter reading. If the display records voltage going to the inverter, such as 19 V DC, the inverter power supply is working. Turn the laptop off. Unplug the LCD inverter connection on the right side of the inverter. This disconnects the backlight from the inverter. Plug a working backlight to the connection on the right side of the inverter. Turn on the laptop. If the screen lights up, the backlight lamp is bad but the inverter works. If the screen remains dark, the inverter is bad.
could be the backlight or the inverter. the only way to tell for sure is to take the laptop apart and install a new inverter. although it really sounds like the backlight which is not cost effective to replace just the backlight, you're better off buying a new screen on ebay or something.
The inverter/backlight combination isn't the whole picture. The inverter powers the backlight, but the inverter is controlled by a signal commonly called "Brite-On", which comes from the motherboard. If the "Bright -On" signal from the motherboard is missing,then the inverter (and thus the backlight) won't work. The problem you are having is on the motherboard. here's a link to a datasheet of such a device:
sounds like either the ccfl tube died or your inverter died, a easy way to test this is to take a old working laptop, remove the screen bezel on both laptops and dissconnect the plug leading to the screen (usally a pink and white wire cable and connect the cable from the hp to the inverter on the old laptop, power on both laptops and if the hp screen lights up then the inverter on your hp is dead, this is not uncommon on laptops and if you ever get a new laptop try to get one with led backlight technology, if the inverter from the old laptop has the same plugs, put it into the hp, otherwise order a new on
How to replace an inverter in an Acer Aspire 4315? I can't find you the exact manual at the moment. HOWEVER, I can give you a link to manuals that are close to the Acer Aspire 4000 Series laptops.
I have found through the years, that many laptop makes and models, are very similar, when it comes to disassembly, of the entire laptop, or just the LCD screen. These manuals are for various models of Acer Aspire laptops,
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp. Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case. The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills. Check out www.lcdparts.net
Backlight or inverter failure sorry to say. No telling which without substitution. Backlights are mostly built into the top of the screen and are tricky to replace. Inverters are generally sited at the bottom of the screen under the facia panel. Look around ebay for replacements
This could be a few things. More than likely it is your LCD Inverter or LCD backlight went out. If you look very closey in a bright lighted area, can you see words? If so it's your backlight. If you cannot it's your LCD Inverter as long as the screen isn't broke or no cables have been damaged.
Either one of these are going to require someone with experience to replace them. However, knowing the problem before hand will save you an hour worth of diagnosting fees and will give you the ability to get a quote over the phone.
Please let me know if this points you in the right direction.