I am convinced that it is mainly that applies to the machines that had those god-ugly CRT Apple ADC Monitors hooked up. Usually because they are powered off of the PSU that is already weak. Mine has NEVER had an ADC Monitor hooked up to it. Thank you! The PSU is in excellent condition. I took it apart and no sign of any problems.
Also, yes, my System is DP Capable. That applies to all machines I believe since the Gigabit Ethernet G4s. The Sawtooth was a maybe, depending on the config. I have a GE G4 Dual 500Mhz in the SawTooth I have (that is sitting dormant)