Il giorno 15/01/13 21:27, Peter Devlin ha scritto: > If it is a crack or a split in the solder contacts of the memory slots > or even the controller it is possible with sufficient targeted heat to > reflow the solder and eliminate the problem. I did a liitle of that some > years ago with a hot air rework station but it only produced a permanent fix > in around fifty percent of cases.
Well, looks like I was lucky. :-) Right now I'm writing this on my G5, that is "born again". :-D I tried everything with the Ram sticks (moving them, cleaning, swapping, trying different sticks), no way. Ok, I knew it wasn't the Ram. Then I used my hair dryer on each memory bank, and on the memory controller chip (actually, on its back, since it's located onto the inner side of the logic board). Around 3 minutes of blowing hot air on each part, and hey!, the trick worked! Knock on wood, I don't know how long it will last. But I was able to backup my recent stuff, so I'm an happy camper anyway. I think it was the memory controller, partly because it has always been really hot, between 70 and 75 degrees Celsius (checking with Marcel Bresink's Temperature Monitor). For a comparison, both CPU dies are around 50° C or less. The funniest thing is, this problem occurred just the day after I decided to buy an used iMac! Maybe the G5 got jealous! ;-) I was planning to sell the G5 afterwards, but now I'm doubtful; I don't want to sell a lemon. OTOH, the repair was pretty straightforward (once I knew what to do), so I could sell it informing the buyer about this caveat. If the problem is going to show up once or twice a year, I think it's bearable; after all, from the dozens post I read about it, this issue can happen to any G5. Thank you to everybody for you suggestions and advice. Valter -- 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
