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Important: when you reinstall a logic board, you'll need to replace the thermal paste that goes between the processor on the logic board and the heat sink. Failure to remove the old paste and apply a new layer can cause the computer to overheat and sustain damage.

To properly reassemble your PowerBook, you'll have to clean off and replace the old thermal compound. Use our Applying Thermal Paste Guide to prepare the processor and heat sink surfaces.

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