I Started getting anoyed with my G4 MDD(mirror drive door),
specially after my G5 Quad came, the fans on the G4 were very noisey,
so checked out the service manual
and taking apart the PSU is straight forward,
i'd advice getting a nice free area to work on,
i put down a old sheet and then took the PSU out of the G4 as its much easier to work with it that way,
link below of apple's guide on removing the power supply unit-
http://www.info.apple.com/usen/cip/p...wer_supply.pdf
once you have removed all the screws wiggle the casing apart BUT not fully apart as there is one more screw on the inside which holds the kettle lead socket,
i didn't remove this as it was more then enough space to work with from the front,
the 2 delta fans are connected using a 2 pin fan socket great news so no soldering involved,
remove the fans and then replace with 2 similar fans,
Measurement of fan 60mm x 60mm x 25mm
The Delta fan specs -
Speed - 6800 RPM
Noise - 46.5 dBA
Airflow - 37CFM
Fans i used -
Thermaltake TT-6025A -
Speed - 4550 RPM
Noise - 28 dBA
Airflow - 21CFM
as you can see airflow is much less but from what i have read this should be enough but i have only used these as i had them,
so best get some with slightly better airflow 25/30CFM
i didn't have 2 pin fan conectors for this so i powered them direct from molex...
Molex adapater are very cheap now can be bought from plenty of different computer hardware stores for £.99p
i also tried a simple thing of adding more oil to the delta fans,
i had to use 5 drops of oil on them
5 on one and 4 on the other before there were fine,
and just this little fix bought the noise down by 5% not much but something...
No comments:
Post a Comment