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Acer aspire blackout

It first pixelated into grey boxes all over the screen, then it went blackout. The laptop is still on, but the screen is black, I cannot put it to sleep mode and have to restart

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  • 5,660 Answers

Primer first;

An LCD screen cannot produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, (Or two of them), or a series of LED lights.
(Cold Cathode Fluorescent Lamp )

The Acer Aspire 4745G Notebook PC uses LED's for backlighting.
(Light Emitting Diode)

A screen Inverter is used to convert the power from the laptop, for the LCD screen and backlight.
However LED technology now does not use a screen Inverter, and neither does the Aspire 4745G.

Primer over.

This brings down to three possibilities;

Graphics chipset, or Video Cable, or LCD screen

Graphics chipset:
1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the laptop.
VGA port is on the Left side, and is White in color,

http://blog.screenaid.com/2010/05/07/acer-aspire-4745g-laptop-review/

Example of a VGA connector, and VGA Cable,

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

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.

2) Turn the monitor on. If a CRT type allow it to warm up first.
Turn the laptop on.
By default the display should show on the external VGA monitor.
If not;

There are at least 3 display options available;
A) Internal monitor ONLY
B) Internal monitor AND external display device
C) External display device ONLY

Hold the Fn key down, and at the same time tap once on the F5 key.
(The F5 key is the Display Toggle-Over key)

Still no display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F5 key.

If the display on the external VGA monitor shows the same results, you have a bad graphics chipset.

[ The graphics chipset probably isn't bad, just the mounting on the motherboard for it, and problems with the mounting is caused by poor cooling for the graphics chipset. (BGA surface mount)

Graphics chipset solder connections (Solder Joints), are what is bad]

I do not think the graphics chipset is bad, but you have to diagnose, and ruling out the graphics chipset is the first step.

Video Cable:
A high source of problems, if the display is fine on the external VGA monitor. (Graphics chipset proves to be good)

The Video Cable connects to the motherboard, under the Left side of the Switch Cover, and approximately above the F1 to F3 keys on the Keyboard.

It then leads under the left Hinge, and up into the Display Assembly.
From there it connects to the back of the LCD screen,

http://www.ebay.com/itm/Acer-Aspire-4625G-4553-4625-4553G-4745-4745G-4745Z-laptop-LCD-Cable-DD0ZQ1LC000-/251004327813?pt=US_Laptop_Screens_LCD_Panels&hash=item3a71061785

In the photo the top of the cable plugs into the motherboard, and the bottom plugs into the back of the LCD screen.

Just due to normal opening, and closing of the laptop the Video Cable may become pinched.
This can lead to one of two things, or both;

1) Connection at motherboard side for Video Cable may be pulled loose, and/or connection at LCD screen side may become pulled loose.

Either, or both, connections could be just loose enough that you won't see it by eye.
For this reason the preferred method, is to PHYSICALLY make sure both connections are tight. Try to plug them in tighter.
Visually inspecting alone will Not do.

IF there is apparent visual signs of damage to the sheath of the Video Cable, there also may be damage to the tiny wires inside.
(Stretched/Broken)

Even if there is no outward signs of damage, the Video Cable should be checked for continuity with a multimeter set to OHMs, and all wires checked.

The Video Cable needs to be ruled out as the problem.
Take it to a 'Mom and Pop' computer store, and have the tech check it for a few bucks.
Or replace it. Parts changing I know, and I abhor 'parts changers', but if this is your only option that is what you need to do.
(Cost seems pretty cheap)

Video Cable connections, and condition checks out to be OK, the LCD screen is the problem.

[ The LCD screen, and the LED backlighting, are a unit.
If you are going to repair a backlight problem, you replace the entire LCD screen ]

[ For the procedure of checking Video Cable connections, and/or removing the Video Cable, or replacing the LCD screen, you SHOULD NOT need an ESD wrist strap.
{Electro Static Discharge}

However let's talk;

An ESD wrist strap cost averages around $3 to $6.
With the ESD wrist strap -> on, and the alligator clip connected to a good ground source, you are assured Static electricity isn't going to FRY OUT your laptop.

Pretty cheap insurance I would say, and the reason I would recommend buying, and wearing an ESD wrist strap anytime you work on a laptop.
One average example,

http://www.radioshack.com/product/index.jsp?productId=2103245

I connect to an unpainted surface, of the metal frame of an open, empty desktop computer case. I do not feel an Anti-Static Mat is warranted.

You can also set a large metal serving tray, (Unpainted), on the table you are working on, and connect to it.
Or a large metal knickknack. (Unpainted)
You get the picture ]

Some disassembly information,

1) Service Manual for the Aspire 4740G Notebook PC.
As close as I could come,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-acer

Go to the 'paragraph' that starts with Aspire 1200. (1200 in Blue)
Drop down to the 5th line that begins with 4710 (Blue), scroll across, and click on the blue -> 4740G

Basic info using an Aspire 5830TG Notebook PC, for replacing an LCD screen. Just wanted to give you pictorial information, that will guide better than just looking at a Service Manual,

http://www.insidemylaptop.com/replace-screen-on-acer-aspire-5830tg-6782-laptop/

ALL power removed, AC adapter (Charger), and Battery.
Remove the Switch Cover, to access the motherboard side of the Video Cable.

OPEN the Display Assembly, by removing the Display Bezel, remove the screws holding the Hinges from the LCD Screen Frame, and remove the screws holding the LCD Screen Frame to the Top Cover.
Then bring the LCD screen assembly forward, and check the Video Cable connection to LCD screen.

Switch Cover laid close, with wires connected so you can turn it on, and Display Assembly still open, you can check if tightening the Video Cable connections did any good, BEFORE reassembling the laptop.

(If the Switch Cover wires do not reach, remove the Power Button Board from the Switch Cover, and plug it into the motherboard )

For additional questions please post in a Comment.

Regards,
joecoolvette

Posted on Oct 25, 2012

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SOURCE: nb acer aspire 7520G - black screen (no light) on startup - starting from sleep mode

Pull the battery and unplug it.

Plug in the AC adapter and see if it boots.

if it does shut it down and reinsert battery, problem solved.

if that doesnt do it then i would check that your ram is seated properly and try swapped between 2 ram chips in both sockets (if your laptop has 2 sockets.

Hope this helps!

Posted on Jan 10, 2008

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SOURCE: Acer aspire 3050 black

try holding Fn then pressing F6

Posted on Apr 02, 2008

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SOURCE: acer aspire 5101 orbicam

If you have a grey rectangle where ur cam should be. Especially after a fresh install plus all the drivers. although Then here's your solution :)

Go into device manager and delete the USB controller. Then reboot. When it says new hardware found let it automatically install it. Et voila, working cam :)

Complements of TruthSeeker 69

Posted on Jan 01, 2009

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SOURCE: SCREEN IS BLACK

i have this problem 2 days ago.. and this works on me... maybe on your's too

you may need to flash your bios. why need to flash the bios.. ? 1. had the black screen of death. or deleted the bios



how to flash the bios:

STEP 1.download the AA1 BIOS from this link:

http://www.acerpanam.com/synapse/data/7117/documents/AS1_BIOS_3309.zip

2. extract the file
3. rename the file 3309.fd to zg5ia32.fd
4. put zg5ia32.fd and FLASHIT.EXE onto the usb drive


now, start the process

STEP 2
A. make sure the power cable is in
B. the laptop is turned OFF
C. Plug the usb stick in!

STEP 3:
Press and HOLD down the FN and ESC key together
then press the power button, while holding the buttons

release the power button and continue holding FN and ESC for about 5 seconds
release the buttons and the power light will start to blink
let the laptop run and DO NOT PRESS anything this can take upto 8 mins
when it's done the laptop will restart.

this works on me... good luck.. and i hope it will help you.....

Posted on Jun 15, 2009

kinerf
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SOURCE: acer aspire one stuck on windows safe mode restart

If you have the option of going to a command prompt (on the choose how to start "text" screen), do it, and type at the C:> fdisk /mbr then press the ENTER key. This may fix things. Also, try removing the battery when the computer is off, wait about a minute, then replace it and start computer. This actually helps sometimes.

Posted on Sep 07, 2009

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