Question about Acer ASPIRE 1640Z COMPATIBLE LAPTOP LCD SCREEN 154 WXGA MATTE CCFL (654367720776)

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On an Acer Aspire 1640z I get blue screen and lines. lines move with track pad movement. nothing readable. replaced lcd cable and inverter. thinking either lcd or motherboard

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Hook it up to an external monitor. If the display is fine on the external then your gpu on the motherboard is fine and the LCD is bad. No external display means bad board. Both cost roughly the same but an LCD is much easier to replace than the board.

Posted on Apr 07, 2011


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My acer aspire 5517 laptop green blank screen and changes to red every 4 second!

More than likely the screen Inverter, Anowarul.

However the problem should be diagnosed.

Problem can be;
1) Graphics chipset
2) Video Cable
3) screen Inverter
4) LCD screen

I have a diagnostic flowchart you can follow, if you wish.
Post back in a Comment.

The plastic frame in front the LCD screen is the Display Bezel.
(Acer? LCD Bezel)

Once removed the screen Inverter is right there in front.
Mounted to the bottom of the LCD screen's Screen Frame.

Service Manual, (Free),

Go to where it states - Aspire 1200 (1200 in Blue)
Drop down to the 7th line. (5310G)
Scroll across, and click on 5517.

Post back in a Comment.


Mar 19, 2013 | Acer Aspire Computers & Internet

1 Answer

Acer notbook black screen

Acer Aspire 5732Z series of Notebook PC?

Need to test whether the problem is;
A) Graphics chipset,
B) Video Cable,
C) Inside the Display Assembly

Inside the Display Assembly problem could be;
A) Screen Inverter
B) CCFL Backlight
C) LCD screen

1) CCFL Backlight:
CCFL stands for Cold Cathode Fluorescent Lamp. (Bulb)
Similar to Fluorescent lighting used in homes, and businesses; but on a MUCH smaller scale.

According to searches for an LCD screen, the Aspire 5732Z series of Notebook PC; uses one single CCFL for a Backlight.

One example,

Average thickness is 2mm. That is a little larger than 1/16th of an Inch. Average length is almost as long, as the LCD screen is in height.

The CCFL contains MERCURY, just like it's larger 'cousins' used in homes, and businesses.

Mercury is a POISON. The bulb breaks EASILY.
If a CCFL is the problem, I STRONGLY recommend letting a professional change the CCFL out, OR just replace the LCD screen as a unit.
It contains the CCFL backlight,

View the last 8 photos.

Use a flashlight, and shine it at the LCD screen at various angles.
If you can make out graphics on the LCD screen, the Backlight is bad; or the screen Inverter.
90 PERCENT OF THE TIME the fault can be attributed to a bad screen Inverter.

2) Graphics chipset:
Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port, on the back of the laptop.
The VGA port is on the Back of the laptop, and next to the Ethernet port.
[ Which is right next to the DC Power Jack (DC_IN), that you plug the AC adapter (Charger) into ]

This is an example of a VGA cable, and VGA connector (Port),

Scroll down for the VGA cable example. Note that color of connector does not matter. It is usually Blue in color, though.

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.

You have at least 3 display options available;
A) Internal monitor of laptop ONLY
B) Internal monitor of laptop AND external VGA monitor
C) External VGA monitor ONLY

Press, and hold the Fn key down.
(Bottom row of Keyboard, second key from left)
At the same time tap the F5 key once.
(The F5 key is the Display Toggle-Over key)
Still no?
Hold the Fn key down again, and tap once more on the F5 key.

No display on the external VGA monitor indicates a bad graphics chipset. More than likely the problem would actually be the mounting, of graphics chipset TO motherboard.
It is soldered directly to the motherboard using a BGA surface mount. (Ball Grid Array)

I doubt you have a graphics chipset problem, but this flowchart method entails that; and no 'stone should be left unturned'.

It would 'bite' if you tried diagnosing without checking the graphics chipset, and replaced video cable, screen Inverter, and LCD screen; only to find you needed repair on the graphics chipset mounting to motherboard; or replace motherboard.

3) Video Cable:
This is an example of the Video Cable. Acer deems it the LCD Cable, and that's what we will refer to it as also,

The long White connector at Top, plugs into the motherboard, in an area to the Top/Left of the Keyboard.
It then routes under the left Hinge, and up into the Display Assembly.

The smaller White connector below it plugs into the screen Inverter.
The LCD cable then connects to the back of the LCD screen, with the large connector shown to the Left side.

The small connector below it plugs into the Camera.

Just from normal repeated opening, and closing of the laptop; the LCD cable may become pinched.
This can cause pulling on it, and result in loose connections at motherboard side; and/or screen Inverter, and/or LCD screen side.

Could also cause damage to the LCD cable.
Stretched/Broken wires.
If the sheath of the LCD cable looks to be damaged, so may be the tiny wires inside the LCD cable.

I will include a link to a free Service Manual, for the Aspire 5732Z series of Notebook PC. The above link, and other pictorial guides; are more for you to get a 'hands on' look, besides just looking at a Service Manual.

Here the repair is to Physically see, if you can plug those connections of the LCD cable, in tighter.
Visual inspection alone will NOT do.

Tried to plug the connections in tighter, and does not cure problem?
Then the LCD cable is to be removed, and a continuity test performed on ALL wires in the LCD cable; with a multimeter set to OHM's. (1K)

Or perhaps take the LCD cable down to the nearest small computer shop, and have the resident tech check it for continuity.
Should only be a couple of bucks.

You MUST rule out the LCD cable before going on. Some may feel with the low cost of the cable, they may just replace it.
Parts changing I know, and not professional; but to each their own until you learn.

4) LCD cable checks out it's time for the screen Inverter.
The screen Inverter is a small circuit board, that converts the power, (Electricity) of the laptop; for the LCD screen, and CCFL backlight.

To test requires a sensitive multimeter. Read fairly expensive.

The plastic frame in front of the LCD screen is the Display Bezel.
Acer? LCD Bezel.
The screen Inverter is located behind the LCD Bezel, and mounted towards the bottom of the LCD screen.

Due to;
A) Non-accessibility of a sensitive multimeter
B) Ease of accessibility of replacing
C) Low cost

,many decide to just replace the screen Inverter.
Again parts changing, but IMHO is justified this time.

[No. You do not want to drag the partially disassembled laptop, down to the nearest computer shop.

A) No tech really wants to come in on someone else's repair, and pardon me; but really not after a non-tech.
Liability issues are also involved.

B) Judge JUST one hour of their service rate, compared to the price of a screen Inverter ]

5) Screen Inverter checks out? (Replaced)
Then the problem is the LCD screen.

Service Manual,

Go to the paragraph that starts with Aspire 1200. (1200 in Blue)
Drop down to the 9th line. (5720 in Blue)
Scroll across, click on the blue - 5732Z

[Ignore if you are aware;
This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
(I would recommend upgrading to the newest version, though)

After you click on the file name (5732Z) it may take up to 30 seconds, before the first page comes up ]

For additional questions please post in a Comment.

Jan 15, 2013 | Acer Aspire 5732Z-4855 Notebook

1 Answer

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Yes, I know. Aspire 5100 series of Notebook PC, not the Aspire 5230 series. I am looking at the Service Manual for the Aspire 5230 series right now, and the above link is a good basic pictorial guide.

Drop down to the subheading - Aspire 1200. (1200 in Blue)
Go down to the 6th line, scroll across, and left-click on 5230 in blue.
(Takes few seconds before the first page comes up.
In the PDF file page number box at the top, go to Page 119)

2) If you mess up with the connection of the LCD Panel Cable, to the LCD Panel, (On back), your laptop will not power up.
Those tiny contact pins on that cable's connector, must line up exactly, and be plugged in tightly to the LCD Panel.
Not plugged in tightly? You won't see it visually. You have to physically check.

Also use the old tape that was there, to tape over the connector once installed, on the back of the LCD Panel.
Ripped it all the way off? Oops! Use some new tape. (Not duct tape, scotch tape, or medical tape. Box tape with strands in it)

3) Connector of LCD Panel Cable, connected tightly into motherboard?

4) Screen Inverter wires connected? Connectors are keyed differently from each other, BUT, are they connected correctly?

5) Why was the LCD Panel replaced? Damaged? Did the LCD Panel Cable receive damage? Did you perform a cursory visual inspection of it's sheath, at least? Sheath showed ANY damage, did you perform a continuity check of each wire in the cable, with a multimeter set to Ohm's? (LCD Panel Cable unplugged from motherboard, and LCD Panel, of course)

6) If there was damage, did the screen Inverter receive damage?

7) Connect the LCD Panel Cable's ground wire/s back to THE ground screw/s? Good bright clean connection area for those eyelet ground terminal/s?

8) Did you crossover the new LCD Panel to the old LCD Panel, to make sure it is a direct replacement?
A screen Inverter, and an LCD screen, (LCD Panel for Acer), are a MATCHED unit.

9) AC adapter plugged into power, and plugged into laptop, along with the battery?

Post back in a Comment, and if none of the above is the problem, we'll go on from there.

Jun 07, 2012 | Computers & Internet

2 Answers

Got an acer aspire 5735z laptop, its running but got a black screen

It only means that either the Inverter Cable/LCD cable or the LCD itself is defective, because if you still see the contents of the laptop to an external monitor, then it means that the rest of the computer's components are working.
You can have the Inverter Cable reseated or have the LCD screen replaced. Have it tested by a local technician.

Mar 14, 2012 | Acer Aspire Computers & Internet

1 Answer

Acer aspire 1640

start up the computer and while its running, hold a flash light to the screen. If you can see any graphics on the screen, your lcd converter burned out. If you can seen nothing, its possible that the back light lamp burned out and the best option would be to replace the screen altogether

Jun 27, 2010 | Acer Aspire 1640Z Notebook

1 Answer

Im having trouble with my 1640z screen. Its blank when i boot up. There is some light but nothing else. Is this a faulty inverter?

if you can see the screen with a flashlight .if the image is on the screen but not lit up its an inverter issue

Sep 21, 2009 | Acer Aspire 1640Z Notebook

1 Answer

Power comes on but the screen stay`s black dose it have a screen lock or stand by

Black screens can be caused by many things the first bit of video runs through the ram, so try changing the ram or swaping it. the next thing that causes a black screen is the LCD Inverter or the back light bulb to test this is take a flash light and shine it on the screen at an angle and see of you can make any faint images out. Next dis-assemble the laptop and see if the processor is heating up or staying cool.

Hope this helps!

May 02, 2009 | Acer Aspire 1640Z Notebook

1 Answer

My lcd screen on my acer aspire 3680 loks like a negative

You only replace the inverter board when there is no light coming from it. E.g. in a dark room you cannot see any light from the screen. But it sounds very mutch like a cable rather than the whole LCD try and get a cable first it will be LOTS cheaper.
Hope this helps

Apr 17, 2009 | Acer Aspire 3680 Laptop

2 Answers

Screen showing funny lines and colors.

That would be the screen itself that needs replaced, if you needed the inverter board you screen would be dark and hardly visable

Nov 12, 2008 | Acer Aspire 3100-1405 Notebook

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