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Acer aspire 4720z lcd problem

My laptop is working fine when i put externeal monitor. the lcd is look like inverted. ther is a text on it but no ligth

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Not sure what you are trying to say, but I will try.

Look at your screen properties and see if there is a setting the will make it do this. It might be in your advanced section. You did not say what operating system you were using so it is hard to tell you where the setting is. It will be a display setting.

Posted on May 29, 2008

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Hi, im from Kota Kinabalu and have this acer aspire 4315 with NO display (Dimmed display) . It is working fine when i use an external monitor. Fyi, i have a 2 unit used working fine power inverter and lcd...


unfortunatly there are three pieces involved in the dimming of the screen. 1) the lcd (you tried that) 2) the inverter (you also tried that) and 3) the motherboard. I had the same thing happen with my daughter's acer. I bought her a new computer and sold the laptop for parts.
Motherboard replacement on these are a pain.
Sorry for the bad news ... Good luck

Nov 29, 2010 | Acer Aspire 4315 Notebook

1 Answer

Advent 5431 screen all mashed up ie cant workout what anythink says on the screen at all,when i plug in external monitor screen is ok..changed screen with a working laptop screen and changed inverter still...


Most probably you have a defective LCD screen cable. This is the only possibility left since you have changed the LCD screen & inverter, & an external monitor works fine. Check your LCD screen cable & replace it if necessary.

Oct 22, 2010 | Acer Aspire 4720 Notebook

2 Answers

Acer Aspire 9402 laptop lcd light comes on,but screen is blank. External monitor works fine. Could it be the lcd inverter?


Have you attempted to reset the monitor output?

To do so:
1. Press and hold the Fn key
2. Locate the monitor switch key (should be F6)
3. Toggle through until the LCD returns.

Good luck, I hope that is the answer for you.

Jul 20, 2010 | Acer Aspire 4720 Notebook

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Acer Aspire 5100 Laptop Screen Works Intermittently


Since you have video with an external monitor your lcd panel is going out.This is not hard to repair only costlyhttp://www.insidemylaptop.com/remove-lcd-screen-replace-inverter-board-acer-aspire-5100-laptop/

Apr 06, 2010 | Acer Aspire 5100 Notebook

1 Answer

My Acer Aspire 1681WLMi's monitor does not work, LED showed the functional hard disk is also not light up, help me.......!!!!!!!!!!


May be the LCD screen is not working fine. Try to put external monitor with the laptop and see if you are getting display on it.. It will make you sure that the driver is fine...

Aug 30, 2009 | Acer Aspire 1681WLMi Notebook

1 Answer

Acer aspire 4720z model laptop having dim resolution of monitor


The fault could be a faulty CCFL lamp or inverter.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

Jul 23, 2009 | Acer Aspire 4720 Notebook

1 Answer

I have an acer aspire 3000 and there is a white single line going across the LCD, I put an external monitor on it and there was no line on the external one. Any help on this? rjprice1@charter.net


UR LCD IS DAMAGED first try to change the inverter cable inside the lcd if it helps then replace lcd if doesnt solve ur problem

pls rate me fixya if i solved ur problem

Mar 04, 2009 | Acer Aspire 3003WLCi Notebook

1 Answer

Acer 4720z LCD


Sounds like the backlight has gone. They are a florescent panel and like all florescent lights don't last forever. This is not something that is user serviceable, so it's time to book it in for a replacement panel.

May 27, 2008 | Acer Aspire 3680 Laptop

2 Answers

Inverted colors


be certain it is not the video card connect it to an external monitor and test,
and reseat the video connector from the panel to the card.
look for bent connectors too.

Mar 19, 2008 | Acer Aspire 5100 Notebook

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