Dell 9300: LCD blanks works few secs after Lid close open

[crashnburn]

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?

[Neil]

Could be most any of those things, but I think it is probably the backlight. I had a T60 that would do that way for a while, and I learned that turning the lamp intensity down a bit would allow it to run longer before shutting off. I would be reddish at start-up also, and after a few weeks like that it went out completely. Replaced the lamp, and all was well again.