Dell Vostro 1520 Laptop screen - bottom 1/4 of the screen failing

I have a Dell Vostro 1520 Laptop

The bottom ¼ of the screen has a horizontal line across the bottom and is blurred in that zone and shakes. It appears to be an electrical power issue such as the power inverter to the screen.

Not sure which component will need replaced, I don't think its the bulb or screen itself. Perhaps the power inverter. The laptop works fine other then this issue. Can't the bottom 1/4 of the screen.

I am attaching a picture of the screen I took with my phone to show what it looks like

Any help is appreciated
bad-screen.JPG
LVL 1
Andreas GieryicComputer Networking, OwnerAsked:
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joinaunionCommented:
Your image upload is not working. It contains errors can you please upload again.
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
Picture of the defective screen
I don't know why its not uploading. I shows "embedded" not sure what it means by embedded
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
I think it uploaded. Let me know if you can see it. I can see it now.
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JohnBusiness Consultant (Owner)Commented:
It is likely the screen and/or the cable hooking the screen to the mainboard. That would seem the likely cause. I would check the ribbon cable and connection first.

It is not likely the inverter (because the screen is lit).
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
I'll openly unit and take a look. The reason I thought it might be the inverter is because it shows a lot of electrical noise.  The bottom of the screen flickers rapidly
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
I'll openly unit and take a look. The reason I thought it might be the inverter is because it shows a lot of electrical noise.  The bottom of the screen flickers rapidly
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JohnBusiness Consultant (Owner)Commented:
It could be the inverter, but an intermittent cable (ribbon) will do the same thing
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joinaunionCommented:
Let us know after you open it up. Has the unit been opened before?
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joinaunionCommented:
You may want to run the diagnostics before you open it up.

Press f12 at boot then choose diagnostics. Make note of LED error flashes on/off.

Your service manual to compare lights.
ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_vostro_notebook/vostro-1520_Service%20Manual_en-us.pdf
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Michael-BestCommented:
Run motherboard and screen diagnostics from UBCD:
http://www.ultimatebootcd.com/download.html

Connect the laptop to an external monitor.
When connected to an external monitor does it give you a good screen?

Post your results for further feedback.

If the monitor or motherboard is faulty then it may be cheaper to replace the laptop and recover your data from the present laptops HDD,
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
All good suggestions I will take a look at that as soon as possible
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nobusCommented:
i doubt it's the inverter; it looks more like theflat cable feeding the lcd matrix that is broken
more info on repairing LCD - and inverter tester here :  http://www.lcdparts.net/Default.aspx
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
I did connect an external monitor and it displayed fine. I will check cable connections next
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
All the diagnostics passed

Him
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JohnBusiness Consultant (Owner)Commented:
Cable connections will not usually be picked up by diagnostics. Did you check the cable?

It is possible the screen has a defect but that symptom usually points to another cause. A screen as displayed will also not likely show up in some diagnostics.
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
I had to give the user a temporary laptop replacement due to time restraints. I will be opening the unit to test the cable - this week and will update post.
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joinaunionCommented:
Any news?

I'm thinking now you need a new screen. They start at 62 bucks here.
https://www.screencountry.com/index.php?section=products&model=VOSTRO%201520&brand=Dell&series=VOSTRO
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
I did open it up and check all connection to no avail. I think its the screen as well. I have access to a known good identical laptop - however removing the screen on this particular Vostro is more time consuming then all the Latitudes I have worked on.
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JohnBusiness Consultant (Owner)Commented:
Can you just replace the lid?  I have done that on some Thinkpads once or twice.
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
Not really. There are two cables going under the motherboard -
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JohnBusiness Consultant (Owner)Commented:
Now I know why I buy Thinkpads  :)
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joinaunionCommented:
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Andreas GieryicComputer Networking, OwnerAuthor Commented:
Thanks!
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