The customer complained that his Toshiba Satellite A70 laptop doesn’t have video on LCD but the screen lights up when he turns on the laptop.
Laptop diagnostics and repair:
The laptop started without any video on the LCD screen, but the backlight lighted the screen. When you have a problem like this, always try to connect the laptop to an external monitor. If the external video is fine, then most likely the system board or the video board in the laptop are fine and the problem is somewhere between the LCD screen and the system board. I connected the laptop to an external monitor and got a normal video output. To find the problem, I opened up the laptop display assembly and found that the video cable on the back of the LCD screen was half way out. After I reseated the display video cable, the laptop started with the internal video.
Read more:
How to troubleshoot and fix laptop video problems
Laptop has bad video on the LCD screen. What is wrong?
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March 15th, 2008 at 1:25 am
I just installed my new lcd. I did not touch anything in the lcd, i unscrewed the hinges and connected the video cord to the motherboard. The screen powers on but no display.
When i toggle fn and f4 with an external monitor all is well. I just cannot get the display onto the lcd itself.
I am going crazy trying to figure out what is wrong with it. Any suggestions?
I just reinstalled windows, could this be the problem?
February 6th, 2008 at 6:23 am
I have a toshiba satellite the left hinge is shatterdit boots up but doesn’t show picture on the lcd or external monitor can someone please hlep me
January 7th, 2008 at 8:18 am
sadly, my problem was the harddrive was gone. its wasnt the videocard that caused my screen to go all weird
November 26th, 2007 at 10:53 pm
chris123,
Unfortunately, I don’t know any other way to test the integrated video at home.
That’s the way most technicians use. Minimize the laptop as much as you can, install known good RAM, install known good CPU if you can find one and if it doesn’t help, replace the motherboard. Even if you can confirm that integrated video is bad, I doubt that you can fix this problem at home.
November 26th, 2007 at 4:17 am
CJ yes I did test everything even the cpu with known good working parts and still with the same result! I thought that maybe you could tell me a practical way to test the integrated video on the motherboard! I think I’ll have to send it to the pro’s because I’m at a loss for other ways to test the motherboard! Thanks for your help!
November 25th, 2007 at 7:11 pm
chris123,
In order to boot any laptop with video you need three essential components: motherboard (I assume the video card is integrated), processor and memory. With these three main parts you should be able to start your laptop with video on the external screen.
Did you test memory? Have you tried replacing it with a known good memory stick?
From my experience CPU failures are not very common. If new memory stick will not fix the laptop, most likely there is a problem with the motherboard.
November 21st, 2007 at 4:13 am
l have a acer travelmate 280 that powers up but their is no display. I tried another working screen and it was still dead. I carefully removed and replaced the hdd, cd-rom, modem and more as far as I could with tested working parts and still the same result. The video chipset is on the motherboard and I suspect that could be the problem. Is there any other way of knowing for sure? I did try booting up with an external monitor….NOTHING!! Any help will be much appreciated!
September 13th, 2007 at 8:19 pm
Marc,
What kind of problem you are experiencing with your laptop?
Here’s what I mean. Let’s say the screen has a few thin lines running from the top to the bottom. If the lines temporarily go away when you twisting/torquing the screen then most likely this problem is related to the screen itself and not related to a bad cable or loose connection.
September 13th, 2007 at 2:38 pm
You said if you twist the screen and the screen appears normal, then the screen is bad.
How is the screen bad if the image is perfect when I torque it or apply tension? To me that means that something isn’t connecting.
June 21st, 2007 at 1:55 pm
Hey I have a Toshiba A70/75 laptop.
I’m having problems recharging the laptop. When I insert the AC adapter into the little hole, the light that indicates that the cable is in is blinking.
I dont know what to do. Any idea ?