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Replaced defective logic board now the screen is white with lines?

I had a defective logic board that caused my mac to have no sound and it would randomly restart. I replaced the logic board and now finally have sound but to my dismay, when I booted to macbook, the screen was mostly white. I waited for the apple logo to show and it never did?

I noticed that if I look at my screen from another angle I can see faint lines so i had a hunch. I plugged my mac into an external display and it was on. So i figured that the display cable wasn't seated properly. Visually it looked okay and i reconnected it and still the lines? Also reset the SMC and PRAM?

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Try the old logic board to see if picture shows, it could be an issue with the new logic board.

Check the LCD cable to see if you have chipped the corner, and check out the components around the LCD connector to see if anything is burnt.

If you have the same issue with the old board, it will likely be a fault with the LCD cable.

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Dominick Ray will be eternally grateful.
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