My screen will not light up on my acer. i changed

swop around memory sticks.
(need more info - any lights on at all - fans spining !)

More than likely the screen Inverter, Anowarul.

http://www.amazon.com/Acer-Aspire-Series-Inverter-Board/dp/B006BHRG9E

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),

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

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

http://www.insidemylaptop.com/remove-lcd-screen-replace-inverter-board-acer-aspire-5100-laptop/

Post back in a Comment.

Regards,
joecoolvette

http://support.acer.com/acerpanam/notebook/0000/Acer/Aspire5100/Aspire5100sp2.shtml

http://www.laptopscreen.com/English/model/Acer/ASPIRE~5100/

So you PHYSICALLY checked the connection of the Video Cable, TO the motherboard, TO the screen Inverter, and TO the back of the LCD screen?

Visual inspection will NOT do. If either motherboard connector, or LCD screen connector is loose, the width of this letter -> I < you won't see it, and it will affect the video signal.

The Video Cable connects to the motherboard under the Middle Cover, above the F4 and F5 key on the Keyboard. (Left edge of F4 key over to middle of F5 key)

[Middle Cover is Acer speak for Switch Cover. The cover strip above the Keyboard, and below the LCD screen ]

aspire-3100-5100-5600-lcd-cable-dc020007o00-.html
http://www.laptops-we-r.com/prestashop/aspire-5100-parts/109-acer-

Click on the view to enlarge. Top left side connects to the LCD screen. Rectangular Black connector with thick round cable, at the bottom, connects to the motherboard. Small cable coming off at the bottom, connects to the screen Inverter ]

From the motherboard connector the Video Cable routes up under the left Hinge, and into the Display Assembly. It then connects to the screen Inverter, and LCD screen.

From normal opening, and closing of the laptop, repeatedly, the Video Cable may become pinched.
This can lead to loose connections.

It can also lead to damage of the Video Cable.
If the sheath of the cable shows apparent signs of damage, the tiny wires inside may be damaged also.
Stretched/Broken

This means to ENSURE that the Video Cable is NOT the problem, a continuity test needs to be performed on all of the Video Cable's wires. (OHMS)
If an economical multimeter ($5 to $12) is not available, suggestion is to take it down to the nearest 'Mom and Pop' computer store, and have them check it. Labor charge should only be a few bucks.

Video Cable checks out it's on to the screen Inverter, for the diagnoses.

[NOTE*
This diagnoses is for an Acer Aspire 5100 Notebook PC. Uses a single (1) CCFL for a Backlight, and has a screen Inverter. Laptops that use LED's for a Backlight generally do not use a screen Inverter]

Did you test the screen Inverter, or replace it?

http://www.amazon.com/Acer-Aspire-5100-Inverter-PK070005U00/dp/B005F1N5O2

http://www.fonerbooks.com/test.htm

NOTE*
Takes a sensitive multimeter. Read fairly expensive.

Primer;

An LCD screen cannot produce light by itself,

http://solutions.3m.com/wps/portal/3M/en_US/NA_Optical/Systems/BehindTheScenes/Optics101/

Click on the monitor. Suggest start out with your audio turned down ]

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's.
(Light Emitting Diode)
The Acer Aspire 5100 Notebook PC uses a single (1) CCFL.

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

[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,

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.

90 PERCENT OF THE TIME the fault is a bad screen Inverter.

Primer over.

If the screen Inverter is good, the LCD screen is bad.
Replace.

[The LCD screen, and the screen Inverter are a MATCHED unit.
When purchasing make sure you get the correct screen Inverter, or LCD screen ]

For additional questions please post in a Comment.

Regards,
joecoolvette

You can see the hint of a picture on the screen? This could mean that the new inverter that you bought is malfunctioning or possibly it's not the right one for your computer, it could also be that you will have to replace your LCD because the "back-lights" are burned out. The back-lights are very small fluorescent tubes or LEDs. either way they are not easy to repair. You would be better off buying a new LCD that goes to your laptop off of eBay. I'm pretty sure that your problem is that your LCD's back-lights are not working and you'll need to replace the LCD.

The cable for the back light inverter board may have come off on the mother board side or on the screen side.

2) Failed inverter board.
3) Failed lamp.

This place will show you what the inverter board looks like: http://www.insidemylaptop.com/how-to-remove-inverter-and-replace-lcd-screen-in-compaq-presario-m2000-laptop/

It is an inverter problem. Check all cable attachments first, then change out the inverter.

The problem ca be bad back light inverter circuits, bad power supply because of bad caps, bad lamps. More likely to be bad caps, see example of failed monitors because of bad caps: http://s807.photobucket.com/home/budm/allalbums

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

If you get a normal ACER screen boot then it goes dim, then your inverter is probably bad.

Just swap the inverter and you should be back in business.

Always make sure the power cable is unplugged and the battery is removed before stating. The inverter is usually always right beneath the screen on most notebooks. Peel off the rubber pads or plastic covers around your screen to reveal the screws. Once all the screws are out you should be able to pull the plastic bezel off the screen. Sometimes seems stuck so pull hard but not hard enough to break it. The inverter is the little board below the LCD, usually has a cable pluged in at both ends and a few little screws holding it in. Remove the screws, unplug the cables. Reverse the process and hopefully your backlight will come on.