Computer Problems? Computing.Net has over 1,000,000 posts about all things technology related! Over 90% answered within 24 hours! Click here to start participating now! Also, be sure to check out the New User Guide.
Laptop LCD lights but no image
Name: chris Date: August 13, 2003 at 12:11:06 Pacific OS: Win98 CPU/Ram: Pentium
Comment:
I'm helping repair a NEC Versa 6030X laptop and the unit was recently dropped. The LCD lights up when the system is powered but no image is displayed. Furthermore, the laptop works fine with an external monitor and the contrast control still appears to function for the LCD.
I've disassembled the laptop and secured all cards and cables but this didn't help any. (no quick fix here...)
I'm not familiar with the workings of the inverter, (I'm assuming its job is to provide power to the LCD)as it appears to be working fine. So I'm wondering what part I need to look into replacing here.
Any thoughts / comments / advice would be greatly appreciated. Thanks in advance!
Name: Dean Date: August 13, 2003 at 13:09:27 Pacific
Reply:
The FL inverter is what powers the backlight.
0
Response Number 2
Name: Dave02 Date: August 13, 2003 at 19:02:27 Pacific
Reply:
The data is transfered to the laptop screen via a paper thin, flat, ribbon cable. It connects to the mobo and runs up the left side hing and is taped to the back of the LCD panel and then connects to a small curcuit board on the LCD panel. Since it works fine on an external monitor. I would supsect this is your problem. The cable is either damaged, cut, or has come lose. You need to invetigate this ribbon cable futher. You will have to take your laptop apart. Just make sure you don't boot you laptop up without the heatsink in place. Otherwise you will damage your processor. Good luck.
0
Response Number 3
Name: chris Date: August 14, 2003 at 08:49:04 Pacific
Reply:
Alright, this laptop has 28 individual wires taped together running from the mobo to the LCD and 8 of which split off to the inverter. I've tested each wire in the cable for conductivity and all is good. I resecured the cables and retested but still no luck. Any other suggestions?
Summary: A few months back I dropped my laptop on top of the screen. When I when to turn it on again just a white screen had popped up but no graphics, there is no sign that the screen iteself had been cracked...
Summary: Howdy all. Okay installed new motherboard, CPU and RAM. All connections were made properly, steps followed in order, CMOS jumper reset, but no image on monitor. Computer starts up, power supply fan ...
Summary: Someone else had been using my laptop for a while with an external CRT monitor in place of the laptop LCD screen. I took the laptop back today and found that the LCD screen doesn't work. Whenever I ...
0 
