Replace the CPU Thermal Paste
Removing CPU thermal paste is straightforward but precise, involved, and requires removal of
the CPU Cooler Shroud. It may also require removing the GPU for easier access.
Tools required: Cross-head (Phillips) screwdriver, Thermal Paste.
Time estimate: 15-20 mins.
Difficulty: Hard
Screws: 12 total
- 4 Thumbscrews (Phillips/Crosshead) on the Top Case.
- 4 Thumbscrews (Phillips/Crosshead) on the CPU Cooler Shroud.
- 4 Bracket Screws securing the CPU heat sink.
1. Follow steps 1-9 in Removing the CPU Thermal Paste.
2. Once the Heat Sink and CPU core are free of old Thermal Paste, apply new paste in a
line down the middle of the CPU core (fig. 37).
3. Once the paste is applied, replace the Heat Sink over top of it. The Heat Sink will spread
the thermal paste across the CPU core, there is no need to spread it yourself.
4. Re-fasten the four (4) screws on the Heat Sink. In fastening the screws, partially tighten
them one at a time, and move diagonally to the opposite corner. For example, tighten
the top-left screw halfway, then move to the bottom right, and tighten that halfway, and
so on. This ensures even pressure between the brackets and the motherboard.
5. Once the Heat Sink is fastened down, clip the CPU Cooling Fan back onto the Heat
Sink.
6. Reconnect the power cables to the CPU Cooling Fan.
7. Follow the steps in Replacing the GPU (if applicable).
8. Next, follow the steps in Replacing the CPU Cooler Shroud.
9. Follow the steps in Replacing the Top Case.
10. Reconnect all external cables and peripherals, and turn the Power Supply switch to the
“on” position.
11. Power on the Thelio to ensure successful boot.
System76 Thelio (thelio-b1)
34
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