LCD lights up but there is no image

The backlight on my laptop LCD lights up..but there is no image. Even when its Posting (before booting in the OS) there is no image.

HOWEVER if i put pressure on a corner of the LCD, the image shows up.

Is it a bad inverter or video cable or other?

This problem is not related to the inverter. Your LCD screen lights up (even without image) so the inverter board and the backlight lamp work fine.

Most likely you have a problem with the LCD screen and it has to be replaced. Apparently, the LCD controller board has a bad solder joint and it makes contact only when you press on the screen.

Could it be a bad video cable or loose connection? Yes, but not likely. Just in case, you can try reseating the video cable connection on the back of the LCD screen and even replacing the cable. If you still have the same problem, you’ll have to replace the LCD screen.

8 Responses

  1. I have Toshiba M45-S35 laptop strangly the screen went completely black. Even while booting it do not show anything. I tried external monitor but it do not show anything either. PLEASE HELP

  2. I have a compaq presario V2000. the computer turns on fine and works perfectly. But after usually 30 minutes of use the screen goes blank. I still see that the backlight is on but there is no image. I tried pluggin in an external monitor and pressed the functoion key but the screen says there is no signal. I reseated the memory with no result. I did the some troubleshooting to make sure it wasn’t the inverter or the screen itself they were all unsuccesful. Since restating is the only option thats what i do, but after 30 minutes or so the screen goes blank again. I’m thinking video card problem. help please?

  3. Tony Clarke

    Hi, I have a Toshiba Satelite Pro 4300 laptop bought from E-Bay,which was apparentley working fine ?, It arrived with a smashed screen . Replaced Screen which was working, lights up to a white background only (no picture), changing display to ext VGA, display works ok, next step is to replace cable. Any other ideas would be appreciated.
    Am i right that it cannot be the inverter because it lights up ?.

  4. Hello,

    Recently I moved and reinstalled my laptop (Toshiba a100-250) in my new home. I connected the tv cable and suddenly there was a stroke of lightning at the television end. My laptop screen also disappeared but still has backlight. I rebooted and also in the booting no screen, only backlight. Through logmein remote control i can connect to my laptop and control it. I tested the video cable with another laptop but it seems it is also not working anymore. I didnt tested my laptop with external monitor yet. My video card doesnt shows any signs of problems. If i switch in logmein to my computer screen instead of logmein screen, it shows only white. I brought it to a Toshiba center here in Brazil but they said I had to change my motherboard to get it working again which costs here like the double price I paid my laptop for…. So do you have any idea what it could be. I presume some contact burned inside the computer so there is no output to my lcd screen. I tested the television with my camera connected to it and the video-ins are still both working perfect.

    Thanks in advance

  5. Laptop Freak

    Ramon,

    I have a Toshiba Satellite A215 S4757 and I bought a LG Flatron to have it as a second monitor. I connected it via RGB and selected the extended monitor option on Windows. But the thing is that the monitor goes Power Saving Mode and doesn’t show anything

    Try using Fn+F5 keys to switch video output between internal and external screens. Hold down Fn and press on F5. Does it change anything? Can you switch video from internal to external?

  6. Laptop Freak

    Jon Hradsky,
    I don’t think that your problem is related to a driver. I posted your question in a separate thread:
    Notebook turns on but monitor would not show any image

  7. Jon Hradsky

    I have a Toshiba Satellite. Recently, and for no apparent reason, when I pushed the power button to turn on my computer, the computer would turn on, but the monitor would not show any image or even any sign of light (doesn’t even light up). Is this possibly a driver issue, or will I have to get a new monitor.

    PS: Pretty convenient how I get my first problem with the laptop about a month after my 3-year extended warranty ends. I smell a conspiracy.

  8. Hi, I have a Toshiba Satellite A215 S4757 and I bought a LG Flatron to have it as a second monitor. I connected it via RGB and selected the extended monitor option on Windows. But the thing is that the monitor goes Power Saving Mode and doesn’t show anything I did the test on another laptop and it worked fine and used another LCD Monitor on mine and it didn’t worked.

    What could be the problem?? I have no idea because i’ve selected TV MODE on the Flatron and it doesn’t go to Power Saving Mode.

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