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Dell 9300: LCD panel blanks but works few seconds after Lid is shut and reopened.

post #1 of 3
10/24/11 at 9:14am
Thread Starter 
Dell 9300: LCD panel blanks but works few seconds after Lid is shut and reopened.

It happened when I was working on the laptop. I figured maybe some windows / video card refresh issue.

So I closed lid and opened again and it turned on, but off again in few seconds.

To ensure this wasnt a windows issue I shutdown and restarted.

This is the case even when I am in the BIOS.

The LCD lights up perfectly, and then suddenly power its as if the backlight turns off?

Close lid again and re-open and it turns on for few seconds.

I am wondering if this is due to the LCD going dud or only backlight?

Or some other part of the LCD assembly stuff e.g. Inverter etc?
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post #2 of 3
10/24/11 at 9:33am
Quote:
Originally Posted by crashnburn View Post

Dell 9300: LCD panel blanks but works few seconds after Lid is shut and reopened.
It happened when I was working on the laptop. I figured maybe some windows / video card refresh issue.
So I closed lid and opened again and it turned on, but off again in few seconds.
To ensure this wasnt a windows issue I shutdown and restarted.
This is the case even when I am in the BIOS.
The LCD lights up perfectly, and then suddenly power its as if the backlight turns off?
Close lid again and re-open and it turns on for few seconds.
I am wondering if this is due to the LCD going dud or only backlight?
Or some other part of the LCD assembly stuff e.g. Inverter etc?

Open up the LCD bezel and see if the cable connecting the LCD to the board is somewhat being damaged. And yes, you can try also first replacing the inverter

cheers ...
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post #3 of 3
12/8/11 at 9:10am
I have had a similar issue with two different laptops.

In once case, it turned out to be a loose cable to the display or inverter (I took both out and put them back, then the problem never happened again). I wasn't entirely sure how it could work when it first turned on if it was loose; the only thing I could think of was that perhaps it transmits more power through different pins at that time.

In the other case, it turned out to be an issue with the lid close detector. Perhaps you could try forcing it to leave the display on all the time (even when closed) to see if it makes any difference.
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