Comments on: You replaced broken LCD screen but the new screen is not working

By: cj2600

cj2600 — Wed, 18 Nov 2009 22:32:02 +0000

kukazu,

I have 2 same machines and one of them had broken screen. I took a screen from the working one with all cables conencted etc. and ther eis no backlight there. I can see very dark icons. When the screen comes back to it’s parent it works ok. Is tehre anything else apart of cables,inverter, incompatible screen, that can cause such a behaviour?

Are you sure that the laptop with broken screen works fine? Can you get light on the broken screen and the laptop is turned on?

By: kinkazu

kinkazu — Wed, 18 Nov 2009 01:34:14 +0000

Hi. I have 2 same machines and one of them had broken screen. I took a screen from the working one with all cables conencted etc. and ther eis no backlight there. I can see very dark icons. When the screen comes back to it’s parent it works ok. Is tehre anything else apart of cables,inverter, incompatible screen, that can cause such a behaviour?

By: cj2600

cj2600 — Sat, 14 Nov 2009 00:02:48 +0000

Keith,

Well I got the new cable today. Same results. Backlight is A OK. No video on the screen. Screen senses cable because when the cable is removed the screen turns pure white.

What was wrong with the old screen?

By: Keith

Keith — Thu, 12 Nov 2009 22:45:51 +0000

Well I got the new cable today. Same results. Backlight is A OK. No video on the screen. Screen senses cable because when the cable is removed the screen turns pure white.

Video is fine through the VGA and HDMI outputs.

The replacement screen is going back. I hope they will honor it. It was purchased from eTech.com

By: Keith

Keith — Wed, 11 Nov 2009 23:52:54 +0000

Yes. I reseated the cable. I ordered a new cable and will try that as well. Additionally I heard that some people may have issues with a little switch that detects when the laptop is closed. I will look for that as well if I can find it. They say it’s near the hinges.

By: cj2600

cj2600 — Tue, 10 Nov 2009 19:53:45 +0000

Keith,

I got everything in, and I even had video for a few minutes until I powered it down and shut it off. Now it’s back together and I get no video. The backlight comes on, and you can see it flash when I use FN+F8 to cycle internal / external video. External monitors work fine also.

Have you tried reconnecting the video cable on the motherobard (or video card)? Maybe you accidentally pulled the cable from the connector while taking apart the display panel?

By: Keith

Keith — Tue, 10 Nov 2009 13:33:46 +0000

I replaced an LCD on a Dell Inspiron 1525. I found it online for $120 shipped. It’s a Samsung LCD panel, 1280×800 WXGA 15.4″ screen. It fits into the Dell fine, but there was no bracket for the inverter board. I was able to use plyers and destroy the old screen (was already broke) to get the inverter bracket off that, then use a hammer to straighten it out. I got everything in, and I even had video for a few minutes until I powered it down and shut it off. Now it’s back together and I get no video. The backlight comes on, and you can see it flash when I use FN+F8 to cycle internal / external video. External monitors work fine also. I opened it back up (which is a pain I might add…) and reseated the cables. Still the only thing that comes on is the backlight. I just ordered a new LCD signal cable. Do you think that could be the problem? The LCD signal cable was attached with industrial strength tape on the old panel’s connector. I wonder if prying this tape up also damaged the signal cable.

The monitors aren’t exactly the same, but they state they are for Dell Inspiron 1525’s. Same resolution, same size same signal connector, same mounting holes same brand (Samsung). The only thing different is the placement of a 1cm connector (which is also on the broken LCD) which is not used at all. Also the part number differs (LTN154X3-LOD vs. LTN154AT10) but the thing is I saw the Vista boot screen when I powered it up (while still disassembled).

By: cj2600

cj2600 — Tue, 10 Nov 2009 06:33:28 +0000

Hamid,

Im trying to replace LCD on asus laptop but there is no display. I have noticed that a pin from ribbon connector is not there so do you think that could be the issue?

It’s possible. Can you get at least the backlight?

By: Hamid

Hamid — Sun, 08 Nov 2009 18:37:03 +0000

Hi,

Im trying to replace LCD on asus laptop but there is no display. I have noticed that a pin from ribbon connector is not there so do you think that could be the issue?

By: cj2600

cj2600 — Fri, 30 Oct 2009 04:19:47 +0000

James,

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.

Apparently you are looking at a wrong screen. Try to find a new LCD screen that matches your screen.

Also white tape that says “Do Not Touch” covers the area of the frame on top were the mounting bracket would go.

It’s normal. You’ll find this warning on most LCD screens.

Does the white tape get pulled back
and the old metal frame removed and goe on the replacement lcd?

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.