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Solved Laptop screen has horizontal lines! agjasfds!

February 19, 2011 at 10:14:04
Specs: Windows Vista, na

Hey! I have an ACER Aspire 4530 laptop, and a while ago my screen started having thin horizontal lines go all across it. Now, those lines have grown pretty large, and my laptop screen has started freezing. When I pull on the top left corner of my screen, though, all those problems go away and my screen becomes completely clear again.

I've connected to an external monitor (using one right now!) and the output's fine; I've opened the screen up and fudged around with the connections and nothing change. The backlight's working, so I don't THINK it's the inverter... and I'm pretty sure that it's not inside the laptop itself (i.e. GPU/motherboard), since the problems go away when I put pressure on my LCD screen. What do you think the problem might be?.. I'm at a complete loss.

A million thanks for your help!


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#1
February 19, 2011 at 10:19:45
✔ Best Answer

You may have one or more damaged wires in the wiring between the display in the lid and the video adapter.
A faulty voltage inverter or backlight cannot cause your symptoms - it has to be either that wiring is damaged, or the display assembly circuits are damaged.

Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.

See response 1:
http://www.computing.net/answers/ha...


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#2
February 19, 2011 at 10:46:05

Hmm alright, thanks a lot. I kind of feared as much. I'm leaning towards that it's damaged circuits in the display, since I don't think any wiring moves when I bend the top left corner of the display. I'll probably end up buying a new LCD, but if nothing else I'll keep this updated.

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#3
February 19, 2011 at 12:47:27

"since I don't think any wiring moves when I bend the top left corner of the display. I'll probably end up buying a new LCD,"

In that case the display assembly circuits are damaged and you need to buy a new or re-furbished (the ad says the backlight or CCFL was replaced) display assembly for your model.
Did you drop this laptop or otherwise subject it to a physical jolt ?

BEFORE you do that, connect an external monitor to the laptop to make sure there's nothing wrong with the display on that which would indicate there's nothing wrong with your video adapter - if there is a display problem on that too you need to replace the mboard.

See the above info at the link I provided, and.....

DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.

Some laptops will display on an external monitor without you having to do anything.

If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / built in display video only / sometimes both - see the Owner's or User's manual for the model.


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Related Solutions

#4
February 28, 2011 at 19:14:18

Okay, I've been busy lately and have just lived off the external monitor. I found time today, though, and I tried the suggestion offered in #2 and at http://www.youtube.com/watch?v=Wwbr..., i.e. checking the wiring between the screen and the main body. As predicted, that didn't work, so I'm going to fork over that $90 and buy a new LCD.

And I did kind of drop my computer a few times... ha.


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#5
March 1, 2011 at 12:44:08

You may need to replace the wiring too.

If you want the display to last as long as possible, don't buy a used display assembly unless the ad says the backlight (CCFL) has already been (professionally) replaced.
.......

I have an Acer laptop model (about three years old) of a friend's that was dropped by the previous owner.The built in display never worked after that, but it worked fine with an external monitor until a few months ago, then the keyboard and ALL the USB ports stopped working. I found a free service manual for it on the web and opened it up and found the mboard was damaged at one corner near the hinge.I tried unplugging and plugging back in everything, but that didn't help. It still works but you can't get past the Logon screen.
At the very least it needs a good used mboard.
It may also need a display assembly, possibly other pieces. The friend has Parkinson's, can't work, is being supported by the government, but has very little money to spare, so it's just sitting here at my place.


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#6
March 9, 2011 at 02:58:00

I had same problem with my ASUS notebook.
Its either the ribbon connector to the lcd which goes through the centre of the laptop which is damaged from constant moving or its the same prob as mine...

all you have to do is take the back of the screen off and pack out the corner with something that dosent conduct electricity eg. buisness cards where it works wen bent... you can keep you screen powered ON and see where it gets worse while toutching different parts DONT WORRY NOT MUCH POWER RUNNING TO SCREEN, lcds are low voltage...take screen off and then rub connector ends with isopropyl alcohol or acetone wait for it to dry off completely
then re assemble screen


NO MORE LINES OR FLICKERING SCREEN THAT DRIVES YOU CRAZY!!!!!!!!


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#7
March 9, 2011 at 03:35:49

... also worth looking at #8 << click! (then scroll down)

.
Angel Decoy
... Posting is provided "AS IS" with no warranties
http://img132.imageshack.us/img132/...
Grrrr... ...im


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#8
April 9, 2011 at 19:52:19

Late reply, but I just bought a new LCD screen for $85, which fixed the problem. It turned out that it really was a screen problem - I guess it was messed up circuitry inside the screen. I didn't have to replace the wires or anything else.

Thanks for all your help guys.


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#9
April 10, 2011 at 07:07:21

We're glad to hear you solved your problem.

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