You replaced the broken LCD screen in your laptop with a new screen but it’s not working. Does this sound like your problem? Let’s find out what could be wrong and how you can fix it.
First of all, I assume that your new LCD screen is compatible with the old one. Different screens require different video cables. Make sure you new screen is compatible with your laptop.
OK, let’s say you accidentally damaged the LCD screen in your laptop. A part of the screen still works fine but you cannot use it like that so you decided to replace the screen yourself. You can find LCD replacement instructions in service manuals or this DIY site.
You did some research and purchased a compatible screen, installed it into the laptop, turned it on and… The new screen is not working!!! What could be wrong?
Before you start to panic, check all cable connections again. Check connection between the video cable, LCD screen and inverter board. Reconnect cables just in case.
Take a closer look at the connection between the video cable and LCD screen. It’s possible you accidentally pulled the video cable from the connector during the screen installation.
The video cable has to be seated properly, all the way down.
Also, on some older LCD screens there are very thin pins inside the connector. Take a look inside the connector, make sure there are no damaged (bent) pins.
You can straighten bent pins with a very small screwdriver but this procedure requires a lot of patience and concentration.
Fortunately, most newer LCDs have a different type of connector, without fragile pins inside.
OK, you have reseated all connectors and cannot see anything wrong but the new screen still is not working. What’s next?
Remove the new screen and connect the old one. If the old one works properly (except the damaged area) but the new one is dead, apparently the new screen is defective and has to be replaced. Hopefully it has warranty.
Here’s another scenario. The new screen kinda works. You can see a very faint image but there is no backlight.
If that’s the case, disconnect the new screen from the inverter board and plug in the old screen instead, as it shown on the picture below. If the backlight inside the old screen lights up, apparently the new screen has defective backlight lamp and has to be replaced.
Related post: Laptop has bad video on the LCD screen. What is wrong?
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October 29th, 2009 at 8:19 pm
James,
Apparently you are looking at a wrong screen. Try to find a new LCD screen that matches your screen.
It’s normal. You’ll find this warning on most LCD screens.
I doubt it. Most likely the mounting bracket is permanently soldered to the frame.
I had a problem like that last week. I was replacing the LCD screen on a Gateway laptop and purchased a new one with exactly the same model number, but… the revision was different. Instead of Rev.C1 I purchased Rev.C2
The new revision had two mounting brackets on the top and bottom and the screen didn’t fit into the case. I had to send this screen back and replace it with Rev.C1 screen.
October 29th, 2009 at 11:06 am
I had half a screen on my dell vostro 1000. I saw an lcd
replacement advertised for less than dell. When I look at
the replacement it has no screw holes on the frame for the
inverter or the piece on top (mounting bracket )that the bezel is attached to.
Also white tape that says “Do Not Touch” covers the area
of the frame on top were the mounting bracket would go.
How can this be fixed. Does the white tape get pulled back
and the old metal frame removed and goe on the replacement lcd?
thanks
October 25th, 2009 at 9:58 pm
Christian HC,
It’s hard to tell. Are you sure that the laptop screen is completely blank? Maybe the image is still there but it’s just very dark? Take a closer look.
Try to switch video from the external to internal mode using Fn+F7 key shortcut.
October 19th, 2009 at 12:12 pm
Hi!
I have a Thinkpad Z61m with a blank screen and no backlight.. An external monitor works perfect but i can’t even see the internal monitor in device manager. – Is it the LCD or the video card? – Thanks
October 13th, 2009 at 8:30 am
Mukesh Soni,
I think you got a defective LCD screen. Your description sounds like a bad screen.
Contact the seller and replace the screen with another one. Hopefully, you still have warranty.
October 13th, 2009 at 5:55 am
Machine:
Lenovo 3000 N200 Model 0769-AH8
Problem:
I had my original LCD screen broken – LTN154X3-L06 / LTN154X3S2LV3.1 (on PCB)
so ordered one from a US based online store. The new one i got has this written on its pcb: LTN154X3S4LV3.2 (on PCB) and LTN154AT07-002 on a white sticker.
The new screen has same size and resolution and backlight type.
After changing the LCD, I get contents only on 2/3 of the screen…1/3 of the right width of the screen is filled with white and other colored vertical lines.
(so from left end to more than half towards right, the picture/desktop is perfect like nothing has happened. Rest of the screen on right has multi-colored vertical lines)
Any suggestion what is the problem? are the two screens not compatible? Any help will be greatly appreciated…I am in deep trouble due to this problem.
Thanks.
Soni
September 26th, 2009 at 4:47 pm
A friend has a Toshiba P200 with a problematic screen, first the keyboard went, then a couple of weeks later suddenly the LCD screen stopped working for no apparent reason, an image can be obtained on an external mointor. He’s rplaced the keyboard and a damaged monitor cable to no avail, then the inverter, and finally the screen each with no success, we’ve upgraded the memory and hard drive in the process so in my opinion that rules out any software issues, advice please…
September 22nd, 2009 at 10:44 am
cliff,
That means the video card works properly and the problem is somewhere inside the display panel.
1. Try reconnecting the video cable on the LCD screen if you haven’t done it already. It’s possible that the video cable is not making good contact with the connector on the LCD screen.
2. Access the video cable and move it a little bit while the laptop is on. Will it change anything on the screen? If moving the cable affects image on the screen, it’s possible you have a faulty video cable.
3. Could be defective LCD screen.
September 22nd, 2009 at 2:56 am
Hi
I’ve replaced the screen on my sons girlfriends laptop (MSI PR210 YA Edition Pink Laptop) but it now has little flashes of coloured lines going down the screen. I can see everything okay but the lines are really annoying!
I’ve checked and it’s the right screen etc and when I connected it to my monitor the lines are not there.
I’ve checked all the cables and they all seem fine, but i’ve noticed that the metal lip on top of the video cable lead isn’t touching the connection on the screen. i’m talking about a miniscule gap but I wondered if they need to be touching to get a complete connection.
August 26th, 2009 at 11:17 pm
Almeida C.,
It’s not the inverter, that’s for sure.
Can you test the laptop with an external monitor? Are you getting same problem on the external video or not?
If the same stripes appear on both, internal and external screens, you have a bad video card.
If stripes appear only on the laptop screen and external video works fine, it’s possible you have bad LCD screen (more likely) or faulty cable (less likely).