Daminato

I have a Dell 4150 and pretty much experiencing the exact same problem, which led me to this forum. I believe I may have fixed the problem temporarely. BTW, my screen will flicker a few times before this happens.

2days a go my roomate hit ctrl-P to print some documents and my display went black. So I thought maybe he hit the wrong key, plus the Fn key is next to he control key so its easy to do. So I restart, same thing happens every few minutes. I use this laptop to mix in clubs so Im freaking with a gig this friday. This laptop is in my studio and I noticed the votage was really low on my pwer conditioner. So I unplugg the laptop to run on just batteries. It works, oh so it must be a voltage problem. Electrician/owner of building comes over, everything is fine he said...***. I plug my laptop in, 5 minutes later screen go's out. So I have him test my AC adapter, he said it appears fine but wasn't positive.

So I replace the adapter. 70$. Get home plug it in, it last for about 10 minutes same thing. BTW, if I hit Fn-F1 or Fn-F3 bio's comes up perfectly even with AC plugged in, but sometimes it will flicker and shut go blank as well, which then I just hit the Fn-F1 key and it resets it. So I now I noticed when I go into bio's searching thru menu's trying to figure out what the problem could be, when I escape bio's, the screen workx fine for a few minutes. Sorry this is getting long.

When I plugin the ac adapter, my screen gets super bright. When I unplug the adapter it goes into powersaving mode and lowers the screen brightness and contrast. So I plugin the AC adapter and lowered the brightness and contrast to the lowest settings using the Fn-arrow keys. It seems to work ok now, it has been about an hour plugged in and no blank screen. So The bulb is going bad I assume and needs to be replaced.
Hmmm, everytime I use the word assume it gets me in trouble or cost me money that didnt' need to be spent.
HOw do I replace this bulb?

Hope my novel helps...