Question about Acer Computers & Internet
Hi, my acer travelmate 4234WLMi screen sometimes shows only colourful lines filling all the screen. I tried to connect it to external monitor and the display on the external monitor is fine.
It comes all of the sudden and for no apparent reason, it can come back normal again. Anyone now what may cause this problem?
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Posted on Jan 02, 2017
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.
Good luck and kind regards.
Posted on Feb 01, 2008
More like the LCD Inverter Board..a loose connection would not cause that, unless you pulled the video cable by openening and closing the lid, but again that too is highly unlikely..
Posted on Jun 03, 2008
XP - Simply on a blank part of the screen right click mouse and select properties, you should be in display properties, selections are there and you should get hte picture(s) you want
Posted on Apr 20, 2009
i know your problem. even if you change the inverter it will not work. the real problem of your notebook is vga memory or video memory. use hot air to resolder your memory. trust me!
Posted on May 20, 2009
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