Recent problems with my MDD inspired me to get my first TiBook as a portable media machine, but I still need to get my tower working again. It is so flaky now I almost with I could write it off as dead, but it was solid for years, and now that I am putting together a new system there's a lot of stuff I want off of there. This weekend I am trying to be methodical and try everything I can think of to get it running. I can't afford any more parts or tools now so I need to work with what's here.

It was a 166 MHz FW400 logic board with a dual 1.42GHz processor card and copper heatsink installed from a partial FW800. The symptoms? It kernel panics constantly in 10.4.11, and just hangs in 9.2.2. There are serious bus issues here. I did try the Apple Diagnostic Disc which I have here, but it is of no use, it claims it is for a different model G4. Here's what I have tried so far, if your MDD be buggin' feel free to use the checklist to get it sorted out:

- ATA 100 bus - changed jumper and booted from X drive only

- ATA 100 bus - " from 9 drive only

- replaced GeForce Ti 4600 card with Radeon 9000, and then another Radeon 9000

- cleaned AGP, PCI, and RAM slots

- removed all PCI cards

- tried different RAM combinations

- removed all USB and tried different keyboard and mouse