Question about Acer TravelMate 2300 Notebook

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Travelmate 2400 monitor turns off

When I turn on the computer the screen comes up, shows windows booting and then after a minute the screen backlight goes off. The desktop is still there but only in bright room lighting. You can see almost a ghost of the desktop and if you can see the cursor, you can navigate somewhat. Pushing the function key and then F5 will bring the screen back on for a second or two but that is it. Sometimes the sreen backlight will not come on at all.

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Screen light not comeing

Posted on Jul 23, 2013

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First try going into the display properties, in the screen saver tab you will see a button marked power, click on this and set the screen to never. This will set the screen to stay on, however, this is most likely a problem with the screen inverter or the screen itself. Check the screen connections, they sometimes work loose. At this point all that's left is the screen and inverter.

Posted on Jul 02, 2008

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1100 ferrari acer power but no screen?


Assuming no BIOS is displayed
  • Memory could be bad
  • Motherboard could be bad
  • Backlight could be bad
  • Inverter could be bad
  • Screen could be bad


Pull the memory modules out and boot the computer if it makes it to BIOS and then beeps at you one or more of the memory modules are bad, replace one at a time if you have more and test until it breaks again then you know which to replace.


To Test the inverter and backlight hook up an external monitor and boot the computer. If it displays correctly on the monitor then you've narrowed it down to a bad screen, inverter or backlight. Backlights don't usually go out.


Remove the monitor and boot the computer. Shine a flashlight on the screen and look for a very faint image of what should be displayed. If you see one I'd start by replacing the inverter. If you don't see one the screen is bad.


If none of this worked then replace the motherboard.

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Hi,

It would seem that for some reason, the display would not activate again after going to standby. This would involve checking the inverter circuitry that powers the CCF lamps (backlight).

A possible temporary workaround is to disable/deactivate the "Turn off monitor" feature in your laptop's Power Scheme.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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Hook a spare monitor to the video output usually on the back, if picture okay! the problem is the laptop screen caused by a inverter board, "located just under the LCD display, or the backlight behind the LCD screen. But if both show the same symptom it is the video graphics card that is defective normally built into the motherboard.

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Please follow the diagnosis outlined in this article to check whether the backlight lamp or the inverter board are the root cause of the problem or not:
http://www.fixya.com/support/r6430776-troubleshooting_laptop_power_failures

If you connect the external monitor & nothing is displayed on it, then this means that both the backlight lamp & the inverter board are fine. The main indicators in these cases are the sound, and the hard drive LED on the laptop case. If the laptop sounds just like it always does for a minute or two after being turned on, it means it's going ahead and booting the operating system, but the video processor or part of the motherboard circuit for video output has failed.

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Use the 'FN' key (blue coloured?) and one of the other blue-coloured keys to "toggle" the video:

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After boot-up, Windows defaults to "LCD only", and so the external monitor goes to "sleep".

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You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :- To determine if you have a LCD screen or video card problem, read this and follow the instructions. 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 it up, 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 for parts, repair service and DIY info.

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Before bying parts hold down the "Fn" key and hold down the up arrow - this usually increases screen brightness

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The backlight is the light bult that illuminates the screen. Before it finally goes out completely it will turn your screen a pink color on startup (and then usually become brighter and the pink fades). It is also possible that the backlight, also called a Cold Cathode Flourescent Light, CCFL, died an immediate death. But usually they take a while and signal with the "PINKNESS" first. If you found that your computer is working just fine connected to an external monitor (and you moved the base of your laptop around while connected to the monitor to be sure and left the computer on for a long time) then you have verified that the screen is the problem. It is usually two things: (1) the inverter, a circuit board that increases the voltage to supply the LCD which eats around 700 volts (yeah baby); or (2) the backlight itself. The first problem is a relatively easy and inexpensive fix. You can find how to replace an inverter by downloading the Hardware Maintenance Manual for the T40, T41, etc., from IBM/Lenovo's site. Replacing the backlight itself, a bulb that is like a strand of speghetti and even more delicate, is a tougher job. I would suggest purchasing a replacement screen in that event rather than replacing the backlight yourself. (The HMM probably does not show you how to replace the backlight/CCFL as it is a potentially dangerous job.) That suggestion assumes you can find a cost-effective replacement screen and do not mind opening the TP and putting the new screen in. At least look at the HMM to see what is involved. Good luck.

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This doesn't necessarily rule out the inverter. I've had inverters with intermittent problems that had the same effect, so having the inverter tested is the only way to rule it out. Other possibilities are a bad connection, a corroded/dirty pin or socket in a connector, a bad ribbon/cable, and a failing backlight. If it is a failing backlight, the entire screen will need replaced, as the screen is considered a sealed unit and the backlight isn't available and not considered a replaceable item. Also, it's rare, but it could have a faulty motherboard component or video card. I'm leaning towards a faulty backlight, but keep in mind the inverter and cable possibility. Start by checking and cleaning all connections.

Sep 17, 2008 | Acer TravelMate 2300 Notebook

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