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Windows 7: Acer Laptop Screen Problem-Inverter or Backlight

26 Jun 2010   #1
Shook

Windows 7 Ultimate x64
 
 
Acer Laptop Screen Problem*Updated* w/ Video

Sooooo.... I'm working on a free hand-me-down laptop. Had a hard drive problem, which I fixed and happened to find 4GB of RAM to toss into it... and what do ya know, the screen starts messing up as soon as I fixed it...

The laptop is not very old so I would like to fix it... onto my problem.



The screen sort of "flickers" and "moves around" and also has a pink tint to it every once in awhile. The screen is this way as soon as I power on the laptop, and having it plugged into the wall proves no difference. Another strange thing is, if I leave it on, after about 5-10 minutes its works perfect, but only for about 15 seconds, then back to like the picture above.

- Tried hooking it up to my desktop monitor, works great.
- Took this thing apart, checked the all of the wire connections, seem to be solid and fooling with them with the lappy on did no justice. I'm stumped basically.

So now I'm wondering, backlight or inverter?

EDIT: Oops forgot the laptop info
Acer Aspire 7520-5071
17" Dual-Core 4GB RAM
Any comments/help?

Thanks in advance,
-Shook
--------------UPDATE----------
So I tried an inverter.... no fix
Noticed that while messing with the video cable to the LCD made the screen go in and out.....
Ordered a new LCD cable.... no fix


Sooo I made a short video
http://www.youtube.com/watch?v=d9vAGRl3ewc


My System SpecsSystem Spec
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26 Jun 2010   #2
Trembyle

Win 7 Enterprise x64
 
 

Normally when the backlight goes out, it will affect the full screen. It can flicker or go out completely. This can be checked with a flashlight held up to a text area on screen and looking for the contrasting image on the LCD. From the way you describe the working then stopping, it sounds to me like the inverter is building up a charge then letting go.
My System SpecsSystem Spec
26 Jun 2010   #3
NoN

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
 
 

If it happens the inverter to be messed-up, those Acer computers are easy to unmount. Try to find the inverter on *bay or amazon
My System SpecsSystem Spec
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26 Jun 2010   #4
Shook

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Trembyle View Post
it sounds to me like the inverter is building up a charge then letting go.
So your money is on the inverter?

Yea I've found an inverter for around $20-$30 on eBay. Very easy to change, have had it open already. Just hoping someone knowledgeable with LCD screens, would be able to tell me if it was in fact the inverter or the CFL bulb(which I would contemplate changing myself, but sounds like quite the pain in the ass)
My System SpecsSystem Spec
27 Jun 2010   #5
Trembyle

Win 7 Enterprise x64
 
 

After looking at your screen shot again, I looks more like a video cable issue on the LCD. If you can inspect the ribbon cables around the LCD and look for any place there is a sharp bend, it could be a broken trace in the ribbon cable, or a loose /unseated connector.
My System SpecsSystem Spec
27 Jun 2010   #6
Carl Lawrence

Dual-boot: Windows 7 HP 32-bit SP1 & Windows XP Pro 32-bit SP2.
 
 

I would say it is a loose connection, so do have a look.
My System SpecsSystem Spec
27 Jun 2010   #7
rbeldua

MS Windows 8
 
 

yeah..it may have been a loose connection with the LCD..happened to me before with the same brand but different model...
My System SpecsSystem Spec
27 Jun 2010   #8
Shook

Windows 7 Ultimate x64
 
 

I have had the whole thing apart, checking the cable for loose connection, checking the insulation of the wires, but nothing looked suspect to me. I have the whole screen apart at the hinges and the body of the laptop down to the motherboard.
My System SpecsSystem Spec
27 Jun 2010   #9
NoN

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
 
 

Quote   Quote: Originally Posted by Shook View Post
I have had the whole thing apart, checking the cable for loose connection, checking the insulation of the wires, but nothing looked suspect to me. I have the whole screen apart at the hinges and the body of the laptop down to the motherboard.
What's about this piece...behind the Lcd, is it well plugged? :


Attached Thumbnails
Acer Laptop Screen Problem-Inverter or Backlight-capture1.png   Acer Laptop Screen Problem-Inverter or Backlight-capture2.png   Acer Laptop Screen Problem-Inverter or Backlight-capture3.png  
My System SpecsSystem Spec
27 Jun 2010   #10
NoN

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
 
 

Could be here aswell...move it or try to unplug and replug carefully:


Attached Thumbnails
Acer Laptop Screen Problem-Inverter or Backlight-capture.png  
My System SpecsSystem Spec
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 Acer Laptop Screen Problem-Inverter or Backlight




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