QUOTE(olddirtyroy @ Dec 9 2010, 03:47 AM)
Well the xbox is back up and running again. Wlintek I must have a way different station than you, I'm using a T-870A. I have my motherboard about 2 inches above the preheater is that to high? It also seems like it takes a long time to preheat the motherboard. Thanks again.
2inches are too high. Yes they should be at max.. maybe 1 inch, if i did the convertion right. That is about 2cm. Indeed leaded solder will start liquifying at 185C-190C but to liquify for resoldering you must get over 200C for 1 minute (beyond that, there is risk you will popcorn your chip, like it happened once to you already).
Generally when you reball and you have to solder back to the board, you go +10C from the liqufying temperatures of the the solder. THis will assure, that the liquifying is proper as a whole, not partially. For unleaded solder the temps are another 20C higher.