So I recently got a power, Mac G5 from a friend who didn’t want to pay for the repairs so I went ahead and did my own fixing but one of the issues I’ve had with it is with the intake fan and the exhaust fan not working it does seem to power on with fan spinning, but it will only spin for a second and never come back on. I tried to run it with the ASD program, but it kept telling me intake fan error so then I went on eBay and found a replacement after I put the replacement and it still gives me the same issues From before. I tried looking it up all over the Internet to see if I can find anybody having the similar problem, but nope, I can’t find any people who are having the same problem as me. I did check the other fans like the hard drive fan and make sure that the water cooler Pump is working and it seems to be running fine. It’s just the intake fan and the exhaust fan are the only issues that I’m having of getting it to work. I try to make sure my connection was stable. Check to make sure it was given enough wattage on power And without power I’m just not getting anywhere and if I use it, it’ll overheat and it would go to sleep to prevent it from overheating itself. Does anybody have any idea ideas? What could be the cause of it? Please let me know. Thanks.
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Power Mac g5 intake and exhaust fan not working despite receiving power
- Thread starter takuminightcore
- Start date
Here a video of what it’s doing
It could be a thermostat issue? As I understand it (not very comprehensively), the fans are under microcontroller control, so if it thinks the temperature in that zone is OK it won't try to turn them on. Not sure that holds up, though - it tries to turn them on when the rest of the machine gets hot but gets an error when it tries to talk to them. Maybe the connectors are damaged? Is the wiring to the fan attached to the part you replaced, or to the stuff that stayed in the computer?
I’ve replaced the intake fan and it gives me the same issue if it could be a micro controller issue is there any program that you might be aware of that can let me manually control the fans because if there’s a way if it is just a thermostat issue I could probably just set it and fix speed and when the computer gets hot, I could just ramp the fans up manually
When you replaced the fan, did that include the wiring? I don't have my G5 here and can't look to compare. If the wiring was also replaced that's probably not the problem, but how sure are you that the connectors are good? Did you try using contact cleaner on them?
If they are controlled by a microcontroller I'm not sure any software can override that. If they're controlled by the main CPU it should be possible. I don't know which is the case and I don't know what software you would need.
No just the assembly like the shroud and the fan
I would run the relevant Apple Service Diagnostic utility (v.2.6.3?) and see what it reports. Also, the calibration utility in ASU seems mainly to relate to fan calibration under load. Here: https://www.macintoshrepository.org...e-test-aht-apple-service-diagnostic-asd-disks
The other thing that occurs to me is that you haven’t reported on temperatures. Something like iStat Menus would give you some numbers to go on, and indeed, whether the machine ought to be running at all without those fans spinning.
The other thing that occurs to me is that you haven’t reported on temperatures. Something like iStat Menus would give you some numbers to go on, and indeed, whether the machine ought to be running at all without those fans spinning.
Ive check that i know the thermostat works because it reads temperatures just fine when idle but when loaded it gets to high temperature of 85c or higher the system shuts down due to overheating issues and when i insert the fan from a alternate source the temps do cool down thanks to the water cooling so i know the water cooling is not an issue also asd does not work with the late 05 powermacg5 if i boot it hangs just like it says in the read me files my apologies for the late reply
There are two versions of ASD for the G5s. Do you have the right one?
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