Mac OS 9 Lives

Mac OS 9 Discussion => Hardware => Where to Buy/Repair Parts => Topic started by: cyberish on June 28, 2026, 12:15:34 PM

Title: Replacement PSU for a Power Macintosh 7300/166
Post by: cyberish on June 28, 2026, 12:15:34 PM

Is there anybody out there with some experience to replace the Power Macintosh 7300/166 PSU?

Title: Re: Replacement PSU for a Power Macintosh 7300/166
Post by: IIO on June 28, 2026, 08:58:17 PM

no experience, but i am also looking for one of these PSUs.

Title: Re: Replacement PSU for a Power Macintosh 7300/166
Post by: smilesdavis on July 01, 2026, 01:22:18 PM

Quote from: cyberish on June 28, 2026, 12:15:34 PM

Is there anybody out there with some experience to replace the Power Macintosh 7300/166 PSU?

pop in a g3 upgrade card ?

Title: Re: Replacement PSU for a Power Macintosh 7300/166
Post by: ovalking on July 02, 2026, 03:11:53 AM

If you're considering replacing the PSU with one from another Mac, check the number of pins on the motherboard connection.
My notes say the 73/86/9600 have a 24-pin connector (TBC, I've never had a 7300). Yet the seemingly similar 7500 has a 22-pin connector..

Title: Re: Replacement PSU for a Power Macintosh 7300/166
Post by: cyberish on July 02, 2026, 08:48:01 AM

Thanks guys.
I would love to implant a silent PSU and of course a speed bump would be great.