Don’t let a repairer see a dirty Mac: they may refuse to complete the repair under warranty. Give it a clean first.
dust
Can I clean my Mac Pro out using an industrial vacuum cleaner, or is there something better?
Some areas of my iMac display now look to be in need of a clean, as I can see specks of dust there. Can I clean them, or do I have to pay an engineer to do this?
The Eclectic Light Company 