thank you...that's what it's looking more & more like.
how/where did you buy the power supply?

got the AHT disc last week & it found no issues...very disappointing.
it does not look like power supply is one of the things thats tested.
Is there anyway other than replacing it to test a power supply?
I have all the details of the machine, such as serial #, Processor type: ppc970 (PowerPC 970), 1.8 GHz Powerpc G%

is the best way to determine what to buy to replace the power supply opening it up & looking for specs on power supply?
or perusing the apple site or another way?

thanks so much,
Joe