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原帖由: Ross Hunter ,

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I had a go with a 1200w heat gun (hot air blower) normally used for stripping paint on my nvidia chip. First covering the whole logic board with tin foil -folded many times, then cutting a small square hole in the foil where the nvidia chip is.

i tested the heat gun in the air on lowest setting, and gauged how hot it was with my hand from a distance.  At about 50 cm distance it was unbearable after a second or two.

From around 20-30 cm distance i gently heated the whole board from above, moving the air gun over all of the foil. I did this for around 2 mins.

then I focused a bit tighter on the nvidia chip, at around 20 cm, for 3 mins, at which point i could smell the solder a little and then another minute a little closer. So a total of 4 mins at fairly close range to the nvidia chip.  I think the key here was that I could smell the solder / electronics when it was 'cooked'.  I was VERY scared to over cook it and end up with one big blob of solder underneath.  I left the logic board to cool after heating - after reading you mustnt move it.  Reassembled it into my A1226 Macbook pro and its working fine.  Ive adusted my energy preferences in be powersaving.  I hope the fix lasts..time will tell.

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