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How to clean and maintain Acer Aspire 4920 ventilation system

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CPU use Thermal Glue and GPU use Thermal Pad to transfer heat to the heat sink. After years, they become dry, which reduce ability to transfer heat. We have to replace both Glue and Pad.

Use soft cloth (or wet tissue), soft cotton ear-pick and Acetone to clean 2 chips (CPU, GPU), heat sink thoroughly.

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