Display blinks & no output after LCD replacement

Just replaced the LCD screen & glass on this A1278 MB Pro Unibody. When I start it up, the screen blinks, but immediately appears to shut down. I also replaced the HDD.

I can hear the SuperDrive running, as well as the fans, and it sounds a lot like it's trying to install the OS. I have no luck with the hardware diagnostic displaying either.

Any ideas?

Answered! View the answer I have this problem too

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Thats great Jim. Now if you would please change your comment to a answer and accept it to clear and archive it. +

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Never mind, I went back in & re-seated the video cable at the logic board, and that fixed it.

Lesson: DOUBLE-CHECK YOUR CABLES!!

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Jim Peterson will be eternally grateful.
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