---------- Original message ---------- Subject: Re: Power Mac G5: how to repair a broken PSU? Date: Freitag 04 Juni 2010N From: "Deaner Lawless Jr." <[email protected]> To: [email protected]
> Most likely the "other" components were capacitors. Readily available. Uses > lead free solder. But have a high degree of difficulty. It does give me > high hope of fixing two logic boards and two power supplies I've been > pondering over. Nope, the other component was diode.My friend found that there were two of them in the high-energy part of the PSU that were secured with a fuse. The energy spike must have shorted the cicuit of the diode and gladly the fuse blew. He also thought a transistor wasn't right but kept this as a last option for the case it wouldn't work still. Must be a strange transistor since it works or he misinterpreted the multimeter readout. Anyway, that' what cause the loud “bang”: the diode that blew. And that's why I didn't hear a “click” anymore thereafter. All the capacitors were okay – visually checked, and since none where changed and it now works again: tested. One other thing: the fuse was standing so he had a hard time replacing it. Also it was close to a “crowded” area, little space for working. But what can I say? He must have gotten it right. Cheers, Andreas aka Mac User #330250 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
