Laptop's LCD Panel showing a vertical burn-in patch (Picture Attached)
My Acer Travelmate Laptop suddenly started to display an odd vertical patch. It happened when I resumed my laptop from Stand-by mode. This patch is about 1.5 inches wide and runs from the top of the screen to the bottom. The color under the display is fine but the brightness is dull. I used DPT software (Dead Pixel Tester) to re-activate the pixels but it did not work. Although I did notice that the patch is not visible when the background image is green. (Seen below)
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When the following situations, you need to replace the LCD inverter: No image on the screen, but the power light stays on Dark display but still readable Between the screen flashes on and off 1/2 to several seconds Power light stays on, but no display and sound No image on the screen, but LCD TV still has sound Picture cycle on and off, as well as high-power LED lights More:http://www.lcdinverter.info/acer-travelmate-8001-lcd-inverter-p-2046.html
The problem is most likely the DC jack in the laptop, causes are no power to intermittent operation, but if the screen blacks out it means the LCD display has issues especially if the rest of the laptop is working, could be a loose video cord from the screen to the motherboard has come loose.
most likely you have a faulty LCD screen, the only option u have is to replaced it or u can use a external LCD screen to act as screen for your laptop. you'll be needing a VGA cable to connect your laptop to any LCD screen available.
You may have a 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
First attach laptop to an external monitor and using the FN/ F keys toggle back and forth to the external display. If the external works OK then the video display adapter is fine and the problem is the TAB welds on the LCD. Time for a new LCD.
she might have changed the display settings, right click on your desktop and go to properties, go to the settings tab and change the screen resolution there. might not be the problem but worth a look, i had something simular when my daughter messed with my pc.
Reinstall direct x before disassembling the laptop. If the problem is hardware is likely to be LCD display to be replaced, LCD ribbon cable out of place, or graphic chipset defective.Here is download of part list and explode view for your laptop. You can require service manual or schematics for travelmate 4000 on this forum, or check older posts and see if you can find it.
Your concern is a typical problem with LCD displays/monitors. There could possibly be three (3) reasons why it is behaving as you have posted. 1. Backlight/Inverter problem; 2. LCD panel problem; 3. Video card problem.
You can do initial diagnosis by: a. connect the laptop to an external monitor. Using the Fn + F? keys, activate the external monitor to be the default display. If it works, you have eliminated the possibility of the video card having a problem. If it likewise did not display anything or blanks out after sometime, then you have just confirmed that it is the video card that is a problem.
If you have ruled out the video card (using above procedure), you can proceed determining if it is an LCD panel problem or backlight/inverter problem.
To determine if it is a backlight/inverter problem, run the laptop normally even without a display. Let it boot and run through its startup sequence even if you can not see anything. Using a flashlight, shine a light obliquely to the face of the LCD display. if you can see some semblance of your desktop albeit dark, then you have just confirmed that it is the backlight/inverter. If even with the aid of a flashlight, the display s completely blank, then it is possible that the LCD display panel is defective. In some cases it is the flexible flat cable that is at fault.
With any of the aforementioned possible problems, opening the unit is required. This would need familiarity with electronic components and circuitry, use of a DVM and perhaps even a soldering iron. Should you not be comfortable doing this, it would probably be to your best advantage to seek the services of a qualifiedly professional.
Hope this be of some help/idea. Pls post back how things turned up or should you need additional information.