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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January 29th, 2009 at 6:16 am
Hi I have an old HP ZD7000 that had a cracked screen. IT had the partnumber LP171W01(A4)(K1) I replaced it with a compatible one. The backlight comes on but there is no bios screen. I connect the old screen and it works just fine. Aside from the replacement being bad, is there anything else that could be wrong?
December 18th, 2008 at 6:35 pm
I have an Acer Aspire 3610, the LCD on it sort of works, it comes on bright white when switched on and then slowly fades in to the normal bios screen (no hdd installed atm) once it’s faded in it works in very very slow motion, i tested it by putting a windows installation disk in and going through the first couple of steps. I could see the WIndows installation menu and the mouse cursor arrow, as i moved the mouse the arrow moved really slowly across the screen, leaving a trail behind it. I’ve plugged a normal monitor in and that worked perfect. So, i’ve ordered a new ribbon cable for the monitor as i suspect that may be where the fault is, do you think that could be it?
December 17th, 2008 at 4:32 pm
I have a philips freevent x59. The old screen worked but no backlight. The invertor has been changed and the screen has just been replaced with a new one. It has the same problem. Still no backlight. Is there anything else. I have done the obvious and checked the connections
December 7th, 2008 at 11:41 am
Shaukat,
Take a closer look at the laptop screen under bright light. Is it completely blank or you still can see a very very dim image.
If there is a dim image, most likely your problem is related to the inverter board. In this case I would try replacing the inverter first.
December 7th, 2008 at 10:59 am
hello i have acer laptop the screen is blank if i connect to other monitor the lap top works so can the screen be repaired or i have to buy new screen please let me know as it would be appricaited
November 29th, 2008 at 2:09 pm
hi i dont know if any of you can help i have a compaq c700 laptop and this was dropped and now 3/4 of the laptop screen is black and white is there anyway this can be replaced or even save my stuff that is on the laptop
November 24th, 2008 at 11:39 am
Hey,
The backlight to the new and the old screen don’t work anymore, all the cables are connected correctly, but the backlight still does not work. Is there something else that could be wrong with my laptop? such as unplugged cables inside the main board?
Thanks if someone could help me out…I’ve been trying to find some place to fix my laptop, but then I can’t find out answers.
November 23rd, 2008 at 6:14 am
Hi all,
I want to ask a question. I have a Toshiba A200 with a damaged screen (15,4″). I have found a same size screen from an Acer 1670 laptop.
Should I be able to fit it in my laptop? I am asking, because the Acer one will cost half the amount of a new one from Ebay.
In general, is there a way to make sure that the Acer screen is compatible before I buy it?
November 12th, 2008 at 11:39 am
My laptop starts up OK. However sometimes the screen appears blank—-UNTIL move or reposition the laptop screen to make it come on to SEE all my ICONs …How can I tell if it is the LCD screen cable or inverter cable problem?
November 11th, 2008 at 9:19 am
Hya i have just put a new screen in my packard bell laptop, but we aint sure where the earth wire conects 2 if u could help me would be brill