Antwoord op "3 beeps on start up"Hi all. Macbook air 13” 2013. 3 beeps. Just done the bake at 180 C for 8 minutes. Protected none RAM parts of the board with baking paper and foil. Removed old thermal paste prior to bake. Cleaned of dust and particles prior. Foil balls to balance the board on. RAM side facing up. Worked :-) Not sure how long for but will update. PRAM reset afterwards too just in case. Extra notes: Don’t worry about plastic or foam pads melting. They don’t. Make sure its only the logic board you put in of course. I wrapped none RAM bits on the board just to protect the rest of the bits just in case. It should cool within 10 minutes in my case. But leave 20 if your unsure. Oven was preheated to 180C. Make sure its at temp.