03-19-2006, 10:21 PM
Hey Rudie!
Do the following:
1) Check the serial number shown on the sticker at the bottom of the case opening (with the door off). The S/N shown in About This Mac... may have changed due to a new logic board, but this sticker should show the original S/N if it is the original case. If it's not, raise holy hell.
2) Fans running at high speed after a logic board replacement is a strong indicator that thermal recalibration was not performed after the swap. This procedure must be performed whenever the G5 processor is installed onto a logic board. It's a simple procedure which takes only about five minutes, but the software tool to do it is only available to authorized Apple service providers. My guess is that your guys either forgot or didn't know they need to do this.
HTH. Good luck!
P.S. If you can see a red LED glowing inside the PM case when the fans are screaming, that's another sure sign it's a thermal calibration issue.
Do the following:
1) Check the serial number shown on the sticker at the bottom of the case opening (with the door off). The S/N shown in About This Mac... may have changed due to a new logic board, but this sticker should show the original S/N if it is the original case. If it's not, raise holy hell.
2) Fans running at high speed after a logic board replacement is a strong indicator that thermal recalibration was not performed after the swap. This procedure must be performed whenever the G5 processor is installed onto a logic board. It's a simple procedure which takes only about five minutes, but the software tool to do it is only available to authorized Apple service providers. My guess is that your guys either forgot or didn't know they need to do this.
HTH. Good luck!
P.S. If you can see a red LED glowing inside the PM case when the fans are screaming, that's another sure sign it's a thermal calibration issue.