🔴 Fixing A Classic PowerMac G4 Power Supply - Vintage PowerMac G4 Repair - No.1267

[@EriksElectronicsWorkbench]

Nice troubleshooting repair. Brings back memories, I still have my dual 500 MHz G4 in storage, looks like yours but a bit older. My power supply has a seized fan. I've never had the supply apart but now I know what it looks like inside the supply.

[@IanScottJohnston]

Nice repair, switch mode PSUs are great fun to work on……..always that possibility of BANG!

[@MrPenguin098]

Sorin says, "We have Picture" LOL.😊

[@noggin73]

Nice one Scott. "it's always a capacitor"!

[@simontay4851]

Except when its a resistor.

[@victorman2227]

Nice repair! Had a couple of repairs that boiled down to open resistors too recently. One a feedback resistor in an oscilloscope flyback, another a startup resistor for the IC in a switching supply. Both resistors looked completely fine though.

[@bblod4896]

Congratulations 🏆

[@GadgetUK164]

Great job =D I hope you find that dev setup on one of your machines!

[@TheDefpom]

@@GadgetUK164 thanks. I had one more machine, a G3 which I tried, USB is dead so cannot control it at all, pulled that IDE drive out but not on it either. unfortunately I think I must have pulled the drive and put it in an external SCSI case, which I now cannot read as I no longer have a machine for SCSI, I might try and sort something out one day.

[@simontay4851]

Buy an old adaptec PCI SCSI card or a blueSCSI. If you don't know what the blueSCSI is, Adrian Black uses it with old Macs to back up SCSI HDDs.

[@davidv1289]

Dang! Nice repair, Scott. Too bad the software you needed wasn't there. Rust would certainly explain a failure in storage, I wonder when the MOV popped. Regards, David

[@ray73864]

I don't consider the presence of flux residue to mean it has been open before. I have too much personal evidence of original owned equipment that I know hasn't been opened or worked on before where it has flux residue out of the factory because they just couldn't be arsed cleaning things properly. This is on equipment from the '80s up to today.

[@davidv1289]

I see this a lot on boards from that era that were wave soldered - usually components with large thermal mass that had to be re-worked.

[@tenminutetokyo2643]

I have one of these machines fully refurbed to mint.

[@GregM]

A win and a loss dam

[@incandescentwithrage]

Fair enough approach I suppose. At first I was going to say your software is worth what someone is willing to pay for it, get the licence server back up on your surviving domain. Then i realised the client is probably sslv2/3 or TLS1.0 and not worth the effort.

[@ray73864]

You say '$30', but that's only if someone hasn't already bought it and parked it. If they have, it won't be $30, it'll be more like $3000 :P

[@russellspear4911]

@ray73864 but still it still weighs almost thirty pounds.