Apple powermac server g3 minitow Service Manual
Hot Issues
Power-On Issue - 13
Power-On Issue
If you experience a power-on issue with the Power
Macintosh G3 Minitower or Macintosh Server G3 where the
power supply fan is spinning, but there is no boot tone, no
hard drive noise, no power LED, and no video, you may have
an improperly installed or faulty voltage regulator. You
should always reseat and/or replace the voltage regulator
before replacing the logic board. (See “System” symptom/
cures in the Troubleshooting chapter.)