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Gravity broke the G4 I had a while back (the power supply fell on it. It was not my fault. Was not was not was not.
So I pulled a replacement resistor off this old Soyo board I had sitting around. Broke the Apple board beyond repair trying to solder the new resistor onto it. So now I had two dead boards. I figured that since the Soyo was now dead anyhow, I might as well take the northbridge and southbridge off it and use them as keychains...
Now, the nb and sb are bga packages, and the only way to get them off is to melt all the solder balls on the underside of the chip at once... There are only two ways I can think of to do this; a heat gun or a blowtorch. I didn't have a heat gun sitting around, so I took my blowtorch to the back of the board instead...