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Acer 7520 laptop screen extremely dark

I can' t lighten by laptop screen. Only able to use it through an external monitor.

Doesn't seem to be a toggle F5 issue

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  • 170 Answers

It may be that your backlight has burnt out, or your LCD inverter has gone bad, if you can hear a high pitched sound coming from the screen it is more than likely the converter, you can order replacements online...

Posted on Mar 09, 2009

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Posted on Jan 02, 2017

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I have a asus x58l and it has a black screen. cant see anything


http://www.asus.com/Notebooks_Ultrabooks/X58L/#support_Knowledge

Don't know why I did that.

Asus Support. Those two words don't even belong in the same sentence. (Neither does Toshiba Support, or Acer Support)

Notice the large statement?

NEED SERVICE?

(In otherwords GOT MONEY?)

Rant over.

Janet,

The problem will be;
1) Graphics chipset
or,
2) Video Cable,
or,
3) screen Inverter,
or,
4) LCD screen

I'm betting it's the economical, and easy to replace - screen Inverter.

Laptop on, shine a bright flashlight at the LCD screen of the laptop; and shine at various angles.

See faint images?
Backlight is out, or screen Inverter is out.
90 percent of the time the fault is the screen Inverter.

Moving on........

A) Graphics chipset:
Laptop OFF, monitor OFF, connect a VGA monitor to the laptop.
The VGA port is on the Back of the laptop.

This is a General example of a VGA port (Connector), and VGA Cable,

http://en.wikipedia.org/wiki/VGA_Connector

Scroll down a little for VGA Cable example.
You can use a CRT type of monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

By factory default settings, the display should show on the external VGA monitor.
IF not;

There are at least 3 display options available;

1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY

Hold the Fn key down, and at the SAME time; tap once on the F8 key.
The F8 key is the Display Toggle-Over key.

(User Manual indicates not all laptops, may use the same Function keys.
Whatever Asus.
The Display Toggle-Over key has LCD on it, surrounded by a rectangular line. Has a small monitor icon to the right of it )

Display on external VGA monitor? No?
Hold the Fn key down again, and tap once more on the F8 key.

No display on external VGA monitor, indicates a problem with the graphics chipset.

Display ON external monitor, indicates a problem with the;
1) Video Cable,
or
2) screen Inverter,
or
3) LCD screen

Perform the 'flashlight test'. No faint images go on to the external VGA monitor test.

Post back in a Comment.
We'll go from there.

Regards,
joecoolvette

(There are NO service manuals available, to the public.
Thank Asus for that. To procede though can be done.

This will require a partial disassembly of the laptop, to include removing the Keyboard, and Palm Rest Cover.

Together we can accomplish this if needed.

May do something I never do, and that is because of no Service Manual available. May ask you to buy a replacement screen Inverter, and replace it.
Need other information above FIRST.

Average cost is around $25 to $30.
The plastic frame in front of the LCD screen is the Display Bezel.

The screen Inverter is located behind the Display Bezel, and mounted to the bottom of the LCD screen assembly.

(Clip or a Philips head screw)

Average example,

http://www.ebay.com/itm/100-Genuine-NEW-Original-Asus-X58L-laptop-Series-LCD-Inverter-08G21VJ10107-/290873311574?pt=LH_DefaultDomain_0&hash=item43b9668156

Doesn't require removing Keyboard, and Palm Rest Cover.
DOES require removing all power. AC adapter (Charger), and Battery.

Mar 24, 2013 | ASUS Sabertooth X58 LGA 1366 Intel X58...

2 Answers

My team and I are trying to fix an Acer Laptop who is is being charged and screen does not turn on. We thought it was the power adapter and apparently it is not. So we guessed it might be the motherboard...


test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) Ide/Sata make sure they have a secure connections and are not faulty or just replace them they could be faulty
make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty ?

even something as small as an electrical extension or a faulty fan lead can cause this problem

a computer needs all of the data and electrical current to travel through every working device and to have an end for a computer to be able work properly

make sure your graphics card is securely seated with no dust in its socket
hope this helps

Sep 15, 2011 | Computers & Internet

2 Answers

I am trying to connect my philips brilliance 170p monitor to my dell laptop.....the monitor keeps saying 'no video input'....help?


After plugging it in, you'll need to actually tell your laptop to use the 2nd display and select an appropriate resolution. Go to display settings, select 2nd display, and select "extend display to this display".

Aug 04, 2011 | Computers & Internet

1 Answer

I have a toshiba qosmio f25-av205, when you start it up the screen showes for about 15 seconds then goes dark, can see the screen on external monitor. Can also see it very faint on screen at same time. ...


In my experience, if a back light goes out, it doesn't work at all. Since yours works for a short time before going dark, I'd say that it's your inverter that's faulty.

May 08, 2011 | Computers & Internet

1 Answer

My screen is very dark. How do I lighten it up?


just change the settings of it. the brightness and the contrast. check the manual for more information.

Apr 30, 2011 | Acer Computers & Internet

2 Answers

Hi, My Dell Studio 1735 Laptop doesnot display anything, i hear sounds of it getting rebooted and startedup but, wont display anything. I tried conencting to external monitor NO...


The video card most likely has failed. The computer will need to be serviced by a trained technician. The entire motherboard will need to be replaced.

Feb 28, 2011 | Dell STUDIO 1735 Motherboard - H274K

1 Answer

My screen on my laptop went black.


Theres is a lot of reason associating to a black screen. First lets just assume it the screen and not the laptop. Check to see if you still see any image in the screen, you might want to do this in a lighted area. If you do, but is very dark, then your backlit light is dead and your screen needs replacement. If you don't see anything, then use a external monitor such as a computer monitor, a Tv and connect via VGA port, or HDMI if you have one or a svideo to an external souce and see if you get picture, If you do, then your Inverter is bad, or either a loose connection wiring somewhere between your comuter base and your screen. ( Because laptop tend to open and close alot) If you don't get anything via external source through your VGA, HDMi or s-vdeo, then this is something involved with your laptop. Could be from cpu, chipset, ram, or simply the motherboard itself.

Jan 28, 2011 | Computers & Internet

1 Answer

Hi there i have a sony viao laptop pcg-7121m, there is no power to the display so when i switch on the laptop the power button lights up but there the screen stays blank, how can i try and trace back the...


Try holding down the function button on the keyboard and tap the F key with the (O) symbol above it, Its the symbol for monitor. You may have to press them a few times. That will toggle computer from its external only monitor mode. If not then hook up an external monitor to the computers vga jack and try again. If you get the external monitor to work that way and not the built on display then the built on display will need replacing and if it does not go to working at all then its most likely a motherboard issue. If the external display does work then you can continue to use it that way until you get the screen repaired/replaced.

Aug 25, 2010 | Computers & Internet

1 Answer

I have an acer aspire 7520 and cannot get the screen to work.


do you see a faint image? look closely! can you boot to BIOS?

Sep 04, 2009 | Acer (ACERMOTHERBOARD)

1 Answer

Dual monitors


Most laptops have a function key to set which monitor is active. By toggling this key, you switch between laptop screen, external screen, and both.
On the keyboard, the key is usually Fn pushed together with one of the function keys that has a monitor logo above it.

Jul 22, 2008 | Intel Motherboard

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