Solder won’t melt on MacBook 2021 logic board – need advice

[defdjamel]

Hi everyone,
I’m trying to remove a component from a 2021 MacBook logic board, but I’m having trouble.
https://www.electronicsdatasheets.co...s/tlv70733pdqn
I’m using hot air at 480 °C with full airflow and good flux, but the solder paste is not melting.

I know there’s a lot of thermal dissipation from the board, and I suspect the copper planes are absorbing most of the heat.

Do you have any tips for this kind of board? Would a preheater help?

Thanks in advance!

[sam_sam_sam]

You need to preheat the board around the device that you want to remove and then use the hot air gun
If you have a toaster oven set the temperature 300*F or lower all that you are interested in is preheating the board so the heat does not escape to the rest of the board but used an infrared thermometer to measure the temperature do not go by the oven temperature settings because most of the time they are not accurate

Now you might want to remove the compartment that might be damaged by heat first

Or use two hot air guns one on top of the board and one on the bottom and put aluminum shielding on the components that could be damaged by heat

[petehall347]

add leaded solder if possible

[CapLeaker]

Preheater and good flux, that’s all you need.