Why is my Bold 9900 screen dead but my phone works?

I have a Blackberry Bold 9900 - was working fine, but now it is having an issue.

The LCD screen seems dead - the phone itself seems to work fine - at least from what I can tell with no screen (phone chirps and chimes with incoming e-mails, texts, etc. - LED light flashes when messages received). I just can see anything on the screen - can't navigate anything.

I have pulled the battery, left it charging overnight, tried resetting it.....nadda. I plan to take it to my service provider - maybe try replacing the screen..... just thought someone might have had a similar problem and found a fix before I go in to the store.

A trip to the carrier store is probably going to be the best solution i think. Good luck!