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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November 7th, 2008 at 7:26 am
hello,
I have an hp pavillion dv9100cto series my problem is i get a black screen however when i use an external monitor windows show up but its set to the lowest resolution (4 bit) everything else seems to work fine and once in a blue moon the laptop display would show windows but its set at vga (800 x 600) screen resolution. How can this problem be fixed?
November 3rd, 2008 at 7:27 pm
I bought a new replacement Inspiron E1405 screen on Ebay. I replaced my old one. When the monitor came on it showed the Dell logo and I was happy but then when the computer went to desktop I have a fragmented screen and when the mouse moves to the right side of the screen it flickers. Does anypne have any ideas? Thanks
October 21st, 2008 at 8:23 am
All… don’t laugh here… I needed to replace the LCD on my Dell D630 so I bought the matching part # off Ebay. When it arrived, I went to install it only to find it had no screw holes for the inverter I was going to use off my old LCD display (the inverter was working fine so I was going to salvage it). So, I email the Ebay seller about not having anywhere to attach the inverter and they reply to tell me that my model doesn’t need the inverter… it will work just fine without it. I can’t see why Dell would put a part that isn’t needed in a laptop… they are too cheap for that!
Am I crazy? Is the Ebay seller?
Thanks!
October 18th, 2008 at 1:39 pm
I recently purchased a new LTN140P2-LO1 screen as well to replace the one i had broke. I took it apart…put in the new monitor following instructions and when i plug it in I see a faint “HP: logo that pops up and then fades then the screen is black. I tried to plug in the old monitor and the same thing happend. I plugged it in following instructions and double checked the video cable connection. Did i somehow damage the video cable?
October 15th, 2008 at 3:00 pm
Hello
I purchase new lcd screen Samsung LTN150P2-L01, which was delivered with inverter (Ambit Rev:5 K021031.00, K021032.00, K021033.00) its SXGA+, my old, original screen was LG PHILIPS LP150X08 with the TDK inverter (TDK TBD281NR-1 EA12B281T).
The problem is that mam laptop compaq nx6310 has got output for inverter with 6 pin’s (like with old TDK which has 6-pin on input) , and my new inverter (which was delivered with new lcd screen) has got 16-pin input. Ofcource i can connect my new lcd screen to the old inverter, but what is the risk i damage the lcd or whole laptop (montherboard etc) ? How check compatibility of those two inverters?
Thanks
October 13th, 2008 at 6:32 pm
HELP.
– - – - – Problem: – - – - –
Laptop does boot.
Video works fine through external monitor.
Keyboard is functional
….But…Touchpad is disabled
….And…Backlight is off
– - – - – Possible conclusions: – - – - –
LCD inverter may be out (but doesn’t explain Touchpad issue)
Laptop thinks its in Standby mode (would explain both issues)
Backlight may be out (but doesn’t explain Touchpad issue)
– - – - – Solution: – - – - –
would be very much appreciated.
Thanks
October 12th, 2008 at 10:32 pm
Kaitlin,
It’s possible you accidentally damaged the video cable while replacing the LCD screen. This is just a guess.
October 9th, 2008 at 8:34 pm
Hey!
I attempted to fix my laptop screen as well. The new screen lit up completely white but there was no picture. I checked all the connections and tried again with no luck.
My old screen worked on one side where you could see the screen properly. I reinstalled the old screen so I could return the defective one and now this screen is not working either!? The screen is completely white…even the undamaged part! Does this mean the new screen is not defective after all? I did have some trouble connecting the “visual” port or whatever…
Please help!! I am sick of this bulky monitor and would like nothing more than a fully functioning laptop! : ) Thanks!
September 30th, 2008 at 1:18 pm
Strangeness continues….from the top…
User told me that it sounded like the computer was starting but nothing appeared on screen. I get the laptop home and….it boots up fine, I can see the screen.
I take it apart to check connections. ribbon to back of monitor is tight, ribbon to motherboard is tight. Put it back together. I walk it around a bit and jostle it to recreate ‘light travel’. I put it down, pick it up, repeat.
Start it back up, no monitor, but there is a back light. Take it apart, connections solid. When I do unplug/plug the cable from the motherboard the monitor does flicker back on.
I just plugged in an external monitor and that comes up fine. I hit fn-f5 and that cycles through the monitors and the laptop screen does come on. I unplugged the external, shut down the notebook and came back 5 minutes later and it turns on fine even without the external monitor.
Thoughts?
September 29th, 2008 at 9:12 pm
Jim,
Can you get the video if you move the video cable? I’m thinking maybe the video cable is bad and it’s shorted inside.
Did you test the laptop with an external monitor? Is the external video output working fine?