Someone here ( probably Bruce ) will know instantly what this means. But until they get here you could try what I a lesser mechanic would do.
I would shut down and look at all connections. I would look inside to see if any sings of electrical odors or visible signs of burning was present On any boards. I would pop the RAM and reseat it. I would pop any boards present and reseat them. I would reset any non volatile RAM. If the problem reappeared after a reboot I would disconnect everything and take the machine outside for a bath. Placing it on a stack of newspaper I would pull all the cards and RAM. Using contact cleaner or 90% rubbing alcohol I would douse it all and scrub it with an old toothbrush. Paying special attention to contacts on card edges and inside of slots. Looking for corrosion ( green gunk), or very dull looking metal. I would use a very soft paint brush and more liquid to wash and scrub all sides of every board looking for soot, burn marks, broken contacts, bad solder joints. Rinse everything and look at how much grime or airborne tobacco smoke show up in the rinse on the paper. I have revived several Old Macs by just doing this alone. Blot it with clean paper towels to speed up air drying. You might find that reseating things, or cleaning a dirty contact solved a problem. Also on your model give the PMU button a tap. You can find a diagram or photo online. Some software issue may be involved somehow, but my gut tells me it is a hardware thing. Connections are always the first thing to look at. Adrian D'Alessio aka; Fluxstringer [email protected] http://www.flickr.com/photos/fluxstreamcommunication/ http://www.facebook.com/FluxStringer https://www.youtube.com/user/fluxstringer http://www.linkedin.com/in/fluxstreamcommunications On Sat, Oct 7, 2017 at 4:14 PM, Jörg Duurkoop <[email protected]> wrote: > Hi, > > Suddenly my MDD running Tiger has started to blink, the power button on my > monitor that is. Blink blink blink, 5 sec. break, blink blink blink. > > Anything going South? I hope not ... > > Thanks for your comments. > > Cheers, Jörg. > > -- > -- > 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 > > --- > You received this message because you are subscribed to the Google Groups > "G-Group" 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/d/optout. > -- -- 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 --- You received this message because you are subscribed to the Google Groups "G-Group" 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/d/optout.
