I will have to check my heat sink in the 7100. It does lock up now and then with heavy usage. (Radius video vision is the big use here)
The iici I will get recapped. It's been mounted horizontal so maybe if they are leaking it didn't make it to the board? Lets hope. It doesn't crash or run wired at all. Sent from my iPhone On Mar 28, 2013, at 12:03 PM, Jeff Walther <[email protected]> wrote: > > > On Mar 27, 9:23 am, Robert Hesson <[email protected]> wrote: >> Do all macs have this issue or is there a model line where this stopped >> being an issue... >> >> I have a iici that's been a dhcp server since 1999 and I don't think it's >> been opened since then. Still runs well. I see cap issues with those once >> in a while... >> >> I also have a quadra, a 7100/80 and an 8500/180. Do I need to worry about >> those as some point? > > The common problem I've seen in the 7100s is that the heat sink > grease, between the heat sink and CPU, turns into dry powder and no > longer performs its function. > > This leads to "mystery" lock-ups, where you just can't get the machine > to do much for very long. > > I recommend cleaning off the old heat sink grease with swabs and > alcohol and replacing it with your favorite flavor of heat sink > grease. > > Remember, you are only filling the imperfections between the flat heat > sink and hte flat CPU die, so do not use more than a dab of grease. > Usually the stuff is electrically conductive as well as thermally > conductive. If you overapply and it runs onto the pins of the CPU, > it can kill the machine. I killed a Power Computing Power 120 that > way, before I knew better. > > At this point in time, I'd recommend recapping your IIci regardless. > It's just not worth risking the logic board damage. My IIci leaked > back in 1997. I had to replace all the caps, AND trace down an open > circuit (corroded via) and run a bypass wire from the front of the > circuit board to the back to shunt around the damaged area of the > board. > > These machines were already leaking in the 90s. > > The leaked goo is corrosive and very hard to see. A casual > examination will not spot it, unless it is very recent and still > liquid. It looks a bit like a dark dried cola stain. Usually one > must take the logic board out of the case and hold it at an oblique > angle to a light source to visually spot the leakage, if one is not > experienced at what to look for. > > These days, if I put a machine in storage, I not only pull the > battery, I desolder all the surface mount electrolytic caps as well. > > Jeff Walther > > -- > -- > ----- > You received this message because you are a member of the Vintage Macs group. > The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our > netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to [email protected] > To leave this group, send email to [email protected] > For more options, visit this group at > http://groups.google.com/group/vintage-macs > > Support for older Macs: http://lowendmac.com/services/ > --- > You received this message because you are subscribed to the Google Groups > "Vintage Macs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > -- -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
