[Q] Completely black screen

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So, I was flashing gtg's unbrick back to stock after trying CM7 for a bit and my phone managed to slip off my desk and come unplugged. Now when I do anything it stays black. Tried taking battery out, plugging in usb... nothing. Not recognized in Odin anymore either.
Any suggestions on what I can do to save this thing?

stays black mean what?
when you insert battery whether there is any backlight or it is completely dead?
you may need to take it to service center.

Meaning nothing at all. No backlight, no nothing.

Well, apparently trying to put the battery back in with the usb connected a few more times convinced it to get back into download mode.
Case closed! Thanks for your help, everyone.

Good to know...

so basically you just kept attempting to put it into dload mode until it took...and eventually it did. Awesome!