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Quieting a Mirrored Drive Door Power Mac G4
I was introduced to a couple of MDDs that had a thick layer of dust in between the outer plastic and the inner metal casing on the lower front. Removing that dust helped the fans to be more quiet.
Get rid of trapped dust so system runs cooler too!
I'll second the notion on the dust trapped between the outer plastic casing and the inner metal chassis -- this also affects models such as my G4 Gigabit Ethernet (the case style previous to the MDD). My power supply fan began failing intermittently, causing the computer to shut off abruptly when the CPU temperature reached 80 degrees Celsius. I began monitoring the temperature while waiting for a replacement power supply to arrive, and it was normally operating at around 70 degrees. (I kludged up an external fan as a backup.) I discovered all the trapped dust when I disassembled the computer to replace the power supply, and now it operates in the upper 50s. I wish I'd thought to take a picture of all the dust!
Get rid of trapped dust so system runs cooler too!
My G4 also gets a regular clean out of the dust that builds up - and I notice a drop of 5-10C in temperature.
I hadn't cleaned the dust out for nearly 2 years, when I noticed this much had built up.
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Get rid of trapped dust so system runs cooler too!
Yeah I was amazed at the amount of dust in there. I cleaned it out darefully with a small nozzle attachment on my plastic handled vacume cleaner, then blew the rest out with compressed air. I too saw a 5 - 10 degrees change. After this & the fan swaps, my Powermac now runs at around 41 - 51 degrees celcius... and very quiet! |
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