MY SCREEN WENT BLANK DURING THE DOWNLOAD OF  APPLE's UPDATE

I was downloading a system update for my MacBook and my screen went blank.
Applecare was unable to identify problem.
I took it into service and they said this has been happening lately with system downloads.
Am I doomed? I've only had this computer for 4 months.
Ray

Not a solution to your problem, but anyway: do you see anything on the screen when putting it into bright light? If so, then the backlight is of while the display is actual working.
My screen sometimes blacks out shortly after waking up from sleep. It always comes back within a minute. Annoying, and I don't have a solution yet and hope it does not need repair. However, during those blackouts I actually can tell what's on the screen when using a torchlight...
I assume you tried fn-F2 to ensure brightness is not set to off? And fn-F7 to ensure the MacBook doesn't think it's using some external screen? Did you try to reset the SMC? The System Management Controller is responsible for power management of the computer and also controls backlighting.
http://docs.info.apple.com/article.html?artnum=303319
Please keep us updated about any results.
Arjan.
MacBook 2GHz 2GB   Mac OS X (10.4.8)  

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