As stated above, my backlight on my little over a year old laptop. It used to be where i can move the screen back and forth and it would come back on, but now it only sometimes works. Using an external display works perfectly. Also, now my computer keeps overheating and shutting off, is it because of the backlight? Does this sound like a backlight issue or something else? I have already replaced the inverter and it failed to work.
It could be a loose connection. It also could be the backlight since you have already replaced the inverter. While you had the LCD disconnected and changed the inverter, did you check the cables? Usually when I've seen customers having this problem it's the backlight. They temp fix it by pushing on the corners, which turns the screen back on for awhile.
If it's overheating and shutting off, that would not be an issue with the LCD. It very well could be the heatsink/fan are not cooling it fast enough.
I would suggest calling dell, or better yet use their live chat (http://support.dell.com) and check the status of your warranty. Tell them of the LCD issue, and the overheating. Suggest they send a motherboard, heatsink, fan, and LCD kit. It's actually quite common on some of the studios.
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