LCD Failures
Hardware failure – LCD, inverter, cable or backlight
Symptoms:
- The laptop appears to start as usual but the screen is black, if you move it, it turns on and works properly. Failed cable.
- The laptop appears to start as usual but the screen is very dark, although it changes colour a little and you can see a very feint image. Failed inverter or cable 90%/10%.
- Immediately after starting the screen has dark pink/red tint and turns dark after a few seconds. Failed backlight.
- The screen flickers a few times but then turns dark, if you move it or tap it lightly on the sides, it flickers again. Failed cable or LCD 50%/50%.
- Screen is either black or white (no picture) and external monitor works. Failed cable or LCD 30%/70%.
- There are stripes on the screen (either vertical or horizontal) that change when you move the screen or tap it lightly on the sides. Failed cable or LCD 10%/90%.
In all above cases, if you plug in an external monitor, everything shows fine on it (you have to plug it in before starting the laptop and may need to press the “Fn” key together with one of the “F1″ – “F10″ keys to make the laptop recognize the external monitor).
Troubleshooting:
If the screen is black, look for the “lid closed” switch and try pushing it a few times. It’s usually a small switch near the hinges that is pressed when the lid(the screen) is closed. Sometimes these switches get stuck in the “lid closed” position that results in black screen(no backlight) or non-starting laptop. Also some laptops have a magnetic switch (newer Dells, most Macs, etc.) that doesn’t get stuck.
The most common failures are (in this order): inverter, “lid closed” switch, cable, LCD, backlight.
Hello
I cant get TinyMCE to work on my wordpress site. I use it before but suddenly it was removed from the menu when i shall update my pages.
Can you tell me what to do?
having problem with dell latitude 610 lcd. The screen is grey after power on. Operating system is fulling functional. Anyone has any idea what is going on? thanks advance for reply.
my friend gave me her laptop to fix (which she dropped on the ground hard), when i got it… the screen was pure white. the external monitor wouldn’t work either (after trying all the function buttons), i opened up the laptop and swapped the ram and hard drive. both work fine. so i open up the monitor and played around with the inverter (used a volt measurement device to see if it was working). i think i shorted something cause now the screen is black. i double checked all connections between the monitor and the motherboard. and they all are well connected. so now i ordered a inverter on ebay. and im waiting for it to arrive. thats when i read this site. and realized its most likely not even the inverter’s problem. whats your take on this situation?
I have a Dell Inspiron 1501. When I use the USB port for Web cams or Air cards for the internet, the screan is fine for ten to fifteen minuts then it turns into vertical stripes . The computer is unresponsive untill rebooted. I beleived that it was an overheating problem so I blew out the fan and heat sink area with no improvement. I apriciate any suggestions you may have.
Thanks JIm
My sony viao shows the BIOS splash screen at boot, and a dim image then after.
When i run a magnet over the top of the keyboard the screen lights up for a few seconds. This leads me to believe the magnetic switch is broke. Is there any quick fix?
my laptop started flickering just from black to normal screen everytime i moved the lid up and down and if you had the lid at a certain angle it would stay on if you moved it the screen flickered off, first thing i did was the usual reseat both ends of the lcd cable……no success……second thing i did was replace the inverter…..no success…..so i started messing with the lcd cable i had the laptop open and i was poking at the lcd cable and were i was poking was turning on the lcd….should i go about replacing the lcd cable or the backlight?????? were can i find a lcd cable for a toshiba m105-3064
Nice Tips, damage to the LCD hardware is rare enough in my experience.
Hello.
I have a Gateway MX3422 laptop and the screen recently started going dark on me too… It works for a few seconds and then there is a flicker and it goes dark. I can still see a very faint picture on the laptop screen and when plugged in to another monitor, it works fine.
Questions: Is it worth repairing or should I just go for a new laptop? Does anyone know how much it would cost to repair the inverter? I am not very computer savvy, when it comes to repairing them.
Please advice. Thanks in advance!
L Maurer
lourdesmaurer@msn.com
I have a laptop that I had switched out the LCD (due to lines) and then the inverter (because it was dark)
The laptop after installing both the LCD and the new inverter worked for about 20 minutes and then turned itself off again. It always worked fine on an external monitor but it is now dark. What is it now?
pputer turns on fine logo comes on solo 1450 then it goes black
u hear back ground but no pic ,tried an external monitor same thing
press f8 and start on safe mode goes through the motions and i can see all
but gets stuck on dir list
go to change bios and i can see all with no prob
only when its suppose to go to desk top is all black
maybe video card?
and can i change it or has to be done by tech ??/
desperate
cant see 4 years of bus stuff!!1
luiscorcuera@comcast.net