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| - | [* black] Lift the logic board out of the midplane. |
|---|---|
| + | [* black] Lift the logic board out of the midplane. Careful, there is a light guide on the lower left that can tear if you are not careful. This guides the light to the power-on light at the front of the iMac. |
| [* icon_reminder] When reinstalling your logic board, be sure to clean and apply a new layer of thermal paste to the U3 chip (highlighted in red) located on the underside of your logic board as well as its heat sink attached to the midplane. | |
| [* icon_note] We have a [guide|744|thermal paste guide] that makes applying thermal paste a snap. |