Or third parties mess with worthless boards to perfect a specific repair, for example the dGPU repairs. Generally complex boards are reworked using prep instructions from the manufacturer, who has intimate knowledge of the the entire board and optimal rework temps. I've seen people try to rework such boards and scratch their heads why they can't get the component off or worse still pull a few pads offĮven if you find someone who is able to do it, it will be at your own risk and thats because there is a good chance the board will be toast by the end of the process. If you tried to do it without such equipment, you'd find the board would suck away the heat preventing the solder from melting. Very careful local and overall temp control is imperative, in other words it can't be done by hand and needs an expensive rework machine/etc. You then need to heat the component to be removed, ball up the new component, clean up the pads and place the new component. You'll also have to ensure everything is kept very stable as obviously joints become less stable, even if the solder is still below reflow temp. Before you do this you'll have to remove any components/plastics/etc that can't survive this base temp. With a large complex logic board, BGA chips/etc you will find you will need to raise the temp of the entire board considerably. The manufacturer may have installed the maximum RAM or the RAM slots may be inaccessible. When you have free pads to play with and a smaller less complex board, free hand rework is possible. Sorry, there are no Memory upgrades available for this model.
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