Hi All

I have a laptop that the screen is blank with no image at all. I plug in a monitor and I get the picture as normal so what could the problem be? Is it the inverter as I have read this just seems to fade in time. There was no fading just straight to blank.

Any help would be appreciated.

Regards

Shine a flashlight onto the screen while it's doing this. Do you see a faint image?

Hi

Thanks for the reply :-)

Yes there is a faint image but not even the led's on the inverter are working. Does this mean is dead? Is there a way to test the inverter is getting power to it?

If you have a second laptop that has an inverter with the same connectors, you can switch them out.

Otherwise, just assume it's a bad inverter and pick up a new one on eBay for 15-45 dollars. It's the easiest part of the LCD assembly to switch out.

Thanks for your help. I have found one off ebay which didn't work but now ordered another so hopefully it will work this time!

Is this a typical sign of a dodgy inverter?

I really appreciate your help :-)

If your next inverter doesn't work either, it could be that your backlight has gone out.

I have just done a multimeter test on the main capacitor thingy on the inverter and it has four solder joints on one side and two the other. When I use all four against one of the solder joint on the two side it all works but when I use the other on the tow side it get no reading from any of the four on the other side of the thingy! Does this mean its bust?

All other thingys on the board get a current through them. I hope you understand what I mean by thingy!!! :-)

Without a picture of the thingy, I have no idea.

There seem to be lots of thingies on inverters.

If the new one produces the same result, it's the backlight.

It may be under your video controllers under control panel that the manufactur has placed a firm ware. I know with eMachines and Gateway laptops there is a setting in Control panel that allows you to disable the LED on laptop for an external monitor. Try booting to safe mode to see if you get a LED picture if so go through your Video settings.

Highly doubt that's the case Rue, that's something that's kind of hard to "accidentally" do. Also, the monitor in that case typically doesn't just turn off the backlight (which is a CCFL tube, not an LED), it turns off all video. There wouldn't be a faint image.