On Friday 01 May 2015 00:07:29 Gregg Eshelman wrote: > On 4/30/2015 5:51 PM, Gene Heskett wrote: > > I think I am going to have to find another PSU for it, there is no > > other rhyme or reason for it to go away in the middle of a job, like > > it has done 3x today. I padded up to the shop & tapped the reset > > button just now so I'll be good for maybe an hour. But I also just > > commented that line out of fstab on this machine until such time as > > I get that one fixed. > > Check all over the motherboard for capacitors with bulged tops and/or > signs of leaking. Also open up the power supply and look for same. > > All the electrolytic can capacitors should be completely flat on top. > The slightest bulge indicates its bad and will be doing out of > specification nastiness to voltage levels and data signals.
Theres an echo in here Gregg. Capacitor ESR is the single most important characteristic in modern digital junk. You may have forgotten that I am A C.E.T., so those are the first things I look for. I just haven't pulled it off the shelf to look yet, thats short stepladder work. Tomorrow if its not raining. > I've seen several power supplies that would do a voltage drop or > increase after being on for a while. A drop can get you lockups, > random reboots and even (oh such fun) data corruption. Too much and > CPUs and hard drives can get fried. > Yeah, there are times when I would kill for a 60 yo VTVM, its needle response is instant. Now we have to drag out a scope to look at such stuff. It is even better at finding that stuff, but most look at a scope & go "whazzat thing?", and have no clue even when you tell them what its doing. I think the majority of us here can use one though. I've had a scope probe in one hand since 1950ish. > There's a 5 volt line not used on newer ATX power supplies so if you > have a tester and it says that line is bad, look to see if the wire is > not in the connector. I think the drive logic, in both drives, (rotating magnetic, and rotating optical) needs 5 volts in these boxes, so I would expect it to be present and accounted for. Unless I missed the memo... > --- > This email has been checked for viruses by Avast antivirus software. > http://www.avast.com > > > ---------------------------------------------------------------------- >-------- One dashboard for servers and applications across > Physical-Virtual-Cloud Widest out-of-the-box monitoring support with > 50+ applications Performance metrics, stats and reports that give you > Actionable Insights Deep dive visibility with transaction tracing > using APM Insight. > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
