MB minor drop, NO video, replaced LCD, still NO video!

Hi Folks,
My first experience as a tech installing these new, ultrathin, LED LCD screens. Got a client's MB 13" Unibody (2008 late) and there was no video, no back light, nothing. External screen displays just fine with a MiniDVI to VGA to LCD connection. All connections were disconnected and reconnected with care and no breakage of any connectors or wires. Any ideas? I was thinking built-in video on LB, but the external works. Replaced an early AU with a newer model LG TLC2. Same connectors--completely stymied. HELP!
Thanks,
Jeff

LVDS cable or connection from board to LVDS. LVDS cable should have been replaced with the display, if not, try that. Otherwise, it's a board.
Small chance too that it's a DOA display.
If I was working on this machine, I would do LVDS cable, board, display, in that order.
Good luck!

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