A1398 Macbook Pro black screen – No image. Many mistake this as graphic card/chip failure, which it’s not! Some idiot will then reflow the graphics chip, which it didn’t need but in doing so it heats the voltage core chip enough , and just enough to reflow the solder on it back into full contact. This only lasts a few months. What we have done here is to resolder the vcore chip with nice new clean solder, we then reflow the circuit area around the vcore to ensure everything is in its place and won’t fail. Note the before picture the grey ball like solder blobs around the vcore chip, then after – whilst it was being reflowed, even through the flux its clear how much brighter the soldering is around the chip. And voila – We have a picture ?✊?
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