Question about Acer Aspire 5100 Notebook

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Inverted screen firs time for me :(*

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Desk top... right click... properties.... look through the settings there

Robert

Posted on Aug 27, 2008

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My home screen comes on then it goes to a white screen


It means the screen inverter and or the screen itself (is) are dying. The inverter's price is cheap, so you can buy a screen replacement and an inverter board at the same time. eBay.com is a good source.

Mar 02, 2014 | Dell Latitude E6400 Notebook

1 Answer

Why is my replaced lcd screen not lighting up?


1) Wrong LCD screen

2) Video Cable (LCD Cable) is not connected tightly.
Motherboard side, or LCD screen side; or both.

3) IF, a screen Inverter is used, the small cable from the Video Cable, that connects to the screen Inverter; is not connected, or has a loose connection to it. (screen Inverter)

4) An LCD screen, and a screen Inverter are a Matched unit.
If it's the wrong LCD screen......................?

5) IF, a screen Inverter is used; the diagnosis was wrong, and the LCD screen was replaced.
90 PERCENT of the time, the fault is a bad screen Inverter.

A) Laptop's LCD screen uses a CCFL, (Or more than one), for a Backlight; the laptop uses a screen Inverter.

Diagnostic flowchart leads from Graphics Chipset, to Video Cable, to screen Inverter, THEN, LCD screen.
Expensive LCD screen was replaced, instead of the actual part that needed replacing;
Video Cable: $9 to $22
Screen Inverter: $9 to $22

LCD screen: $60 to $245

B) Laptop's LCD screen uses LED backlighting, and does NOT use a screen Inverter:

Diagnostic flowchart is;
A) Video Cable;
A Video Cable should have it's connections PHYSICALLY checked.
You have to try to push the connectors in tighter.
Visual inspection alone will NOT do.

Making sure the Video Cable connections are tight, and this does not fix the problem, then the Video Cable needs to be removed; and every wire in the Video Cable checked for Continuity with a multimeter set to OHM's. (1K)

Not feasible, then take the Video Cable down to the nearest small computer shop; and have the resident tech check it for Continuity.
Should only be a few bucks.

Or just replace the Video Cable.
(Parts changing I know, but...........?)

Primer:
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 more than one), or a series of LED's.
(Light Emitting Diode)

A CCFL is a Cold Cathode Fluorescent Lamp. (Bulb)
Similar to Fluorescent lighting used in homes, and businesses; but on a MUCH smaller scale.

Average thickness is 2mm. That is a little large than 1/16th of an Inch.
Average thickness is almost as long, as the LCD screen is in height.
View the last 8 photos,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

A screen Inverter is used to convert the power, (Electricity), from the laptop; for the LCD screen, and Backlight.

As previously stated, Backlighting that uses CCFL, uses a screen Inverter.
LED backlighting MAY, or MAY NOT use a screen Inverter.
When the LED backlight technology first came out, it seems some did use a screen Inverter.
It also seems as the technology advanced, LED backlighting does Not use a screen Inverter.

Regards,
joecoolvette

May 14, 2013 | Sony PC Laptops

1 Answer

LCD screen flickering


Display Configuration A flickering screen may be caused by the computer detecting incorrect display settings as it starts or returns from sleep. It can also come from changes to the screen resolution settings caused by a new program or update installation. Verify screen resolution before assuming the issue is hardware related. Faulty Inverter Next to the display screen behind the plastic screen bezel is a small component called the inverter, which supplies power to the screen backlight. The flickering indicates the power is not reaching the backlight. To fix the issue, replace the inverter. Faulty Connectors The wires and cables traveling from the display around the hinges and into the motherboard tend to wear at the hinge area. Over time, the opening and closing of the screen causes this wear. The solution is to disassemble the plastic casing of the laptop, reorganize the cables so they have no interference from hinges, or replace the cables and connectors with new ones made specifically for the computer make and model experiencing the issue. b> Test an LCD Inverter An inverter is an electrical device on the bottom of your laptop screen. The job of the inverter is to convert DC electrical current to AC voltage to maintain power to the backlight lamp. If the display on your laptop is dark but working, odds are the inverter or the lamp are at fault. When troubleshooting monitor problems on a laptop, you may need to evaluate the inverter to determine which of the two parts is malfunctioning.

Remove the screen bezel on your laptop. The bezel is the piece of the computer casing that surrounds and protects the LCD screen. To remove the bezel, remove the screws around the screen. Bezel removal method may vary by model. Once the screws come out, the bezel should pop off. The inverter will be under the screen. Attach the positive probe (+) of a multimeter to the pin 1 on the inverter. The inverter has two connections, one on each end. With the laptop screen facing you, look at the left side of the inverter. Pin 1 is the top metal flange pointing to the right. Secure the negative probe (-) of the multimeter to any bare screw. There should be a screw securing the inverter to the laptop that will be perfect for the negative ground connection. Turn the laptop on to test the inverter. Turn the multimeter on and check the multimeter reading. If the display records voltage going to the inverter, such as 19 V DC, the inverter power supply is working. Turn the laptop off. Unplug the LCD inverter connection on the right side of the inverter. This disconnects the backlight from the inverter. Plug a working backlight to the connection on the right side of the inverter. Turn on the laptop. If the screen lights up, the backlight lamp is bad but the inverter works. If the screen remains dark, the inverter is bad.

Feb 25, 2013 | HP Pavilion PC Laptops

2 Answers

Blank display on HP dv2000 laptop


i suggest you dismantle your laptop and take a look at the LCD cable behind the screen and make sure it is click locked.

Jan 23, 2013 | HP Pavilion dv2000t Notebook

1 Answer

Lap top dark screen, with system working fine. plugged on external vga, it works.


90 percent of the time the problem is the Inverter.

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

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp. (Bulb)
Similar to the Fluorescent lamps used in home and businesses, but on a MUCH smaller scale.
(General size is 3 to 5 inches in length, and half the thickness of a No.2 pencil)

An Inverter is used to provide power for the LCD screen, and the Backlight.

An Inverter reduces the power coming from the laptop, for the Backlight.
An Inverter increases the power coming from the laptop, for the LCD screen.

An Inverter is a small circuit board located inside the Display Assembly, behind the Bezel, and usually towards the bottom of the LCD screen.

This is a typical example of an Inverter. It is NOT THE Inverter that you will need.
You have to match the Inverter to the LCD screen. has to be THE Inverter.

http://www.lcdparts.net/InverterDetail3D.aspx?ProductID=2432

Post in a Comment as to the Model Number, and LCVD screen size of your Acer laptop.
(LCD screen's are measured diagonally. From corner to corner)

Nov 24, 2010 | Acer PC Laptops

1 Answer

I cant see any thing in my display but all are working starting sound of windows xp brightness function working but some time its works


1. Test using an external monitor. If it works, then either the screen bulb or the inverter board might be defective.
2. Test the inverter. Easiest way to do it if you have a good screen with a good bulb. Connect the good screen to the inverter board & test it. If it lights up, then the inverter board is good. If it did not, then the inverter board is bad & needs to be replaced.
3. If the inverter board is good, then we are left with the possibility that the screen bulb is bad. To fix this, we will need to replace the LCD screen.

Oct 12, 2010 | NEC Versa Premium Notebook

2 Answers

Now when I turn on the computer I get a blank screen


check the programs firs is working very well or not if working. chech the inverter is working, open you lcd screen then check the inverter

Jun 03, 2009 | Toshiba Tecra 8000 Notebook

1 Answer

Acer Travelmate 201T most times no display


If the backlight is coming on its not the inverter, check the ribbon cable for the screen itself, If its been opened and closed alot maybe be time to replace the screen. Check connections first, go from there.

Dec 11, 2008 | Acer TravelMate 201T (91.44G01.4J4) PC...

2 Answers

I turn on my computer but the screen is still black


think you might have a failed screen inverter (FL inverter); this problem is very common with laptops. The inverter board acts as a power supply for the LCD screen backlight bulb, it converts low voltage DC power into high voltage AC. On most laptops the inverter board is located inside the display assembly below the LCD screen and you can get access to it if you remove the screen bezel (LCD mask). When the screen inverter goes bad the backlight will not turn on anymore or it turns on for a short time and then goes off, but you still can see a faint image on the screen and the external monitor works just fine. First of all I would make sure it’s not just a loose connection and reseat connectors on the inverter (it looks like you already done this part). Next, I would try replacing the inverter board. It might fix your problem with the backlight. It’s possible that you have a faulty cable, bad motherboard or even bad LCD screen, but I would try replacing the screen inverter first.

Oct 06, 2008 | Toshiba Satellite Pro 4600 Notebook

2 Answers

Celsius Mobile a


If you have already tried the usual brightness and contrast controls, the problem most likely is a bad inverter. You can find an inverter for around 10.00 on ebay.

Jan 22, 2008 | Fujitsu Siemens CELSIUS Mobile A Notebook

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