I was trained on the X-ray inspection rig last night at work. I was given permission to x-ray circuit boards I bring from home as long as I work on them under the same conditions as before (breaks only).
With that in mind, I'm excited since I can finally see what the hell is wrong with the motherboard from my dead Thinkpad R40. I traced the problem to the area of the northbridge, but because I couldn't see anything, I couldn't fix it. It only had trouble when heated up and would work again with the right pressure on it so I'm thinking a microcrack someplace. It will be interesting to see the result of this.
I'm also looking at doing a bigger project, namely one of those 600MHz upgrades to one of my SGI O2 machines. Since I have the means necessary to do the work, I'm strongly considering it. All I have to do is get a bare RM7000C-600 CPU, one of those SPROM chips and training on the board oven and hot-air rework machines.
Right now, I can do the following to prepare:
switch the resistors around for the voltage mod
have someone at work remove the original CPU or teach me how
clean the pads for the CPU
remove the SPROM and clean the pads
wash the board in preparation for the new CPU and SPROM
If I can make this work efficiently, I could convert more.
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