I need to cool down my G4 MDD 1.25 DP - Replacement fan recommendations

Hello,
This is my first post to this forum. My G4 was very unhappy and so far the information here has given me great direction in my effort to upgrade my mac. Now I need to lower the temperature... I think.
Heres some background:
About a week ago my G4 crashed and the original 80gb hard drive stopped mounting. It was really warm inside the case and I'm guessing something overheated. Disk Utility gave me the "underlying task failure" error. I was frantic to retrieve the data I neglected to back-up. Two days later I booted it up with Disk Utility again so I could write down the HD errors and the hard drive mounted. Since then I made a carbon copy of the OS and migrated it over to one of the two new WD 160gb ATA/100 drives I put in (thanks to this list).
It was like a new Mac and didn't crash for 6 days, until last night, it crashed hard again. Got the blue screen twice. I decided it was too hot so I opened the case door a third of the way, got a window fan, and literally laid it over both my cinema display and the top of the Mac. Waited ten minutes and it stared up and ran fine.
Can anyone give me the low down on the best most compatible fan to get, something I can swap out.
Do I need to replace more than just the main fan and where is the best place to get this stuff.
Could the power supply components be the issue?
Thanks in advance for any insight or responses.
vejvoda
Message was edited by: vejvoda
Message was edited by: vejvoda

vejvoda,
the blue screen is a software issue. When overheating you would get a kernel panic with black screen and white text. A computer will generally be quite warm inside. Run your Mac with the side panel open and check that all fans are running: PSU, case and CPU. You should remove excessive dust accumulation from fan intakes and exhaust (after shutting it down of course). If the fans check ok you need no replacements.
The blue screen would indicate you should do some maintenance like booting the install CD/DVD and running disk repair (not verify) repeatedly until you don't get any more errors. After that booted from your HD you should run DU again and repair permissions.
Hans

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