Forums before death by AOL, social media and spammers... "We can't have nice things"
|    comp.sys.ibm.ps2.hardware    |    Discussing IBM PS/2 hardware    |    42,985 messages    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
|    Message 41,182 of 42,985    |
|    Louis Ohland to Pertti Helander    |
|    Re: My IBM PS/2 8595-AKD missing power.    |
|    10 Jan 23 08:41:27    |
      From: ohland@charter.net              There is a RETAIN tip concerning AC power cords that have taken a "set"       at the female end. How old are these AC cables? Are they fully seated       into the 95 PSU? Did you try another AC power cord?              Pertti Helander wrote:       > tiistai 10. tammikuuta 2023 klo 14.13.12 UTC+2 slavo...@gmail.com kirjoitti:       >> The click you heard might have been a relay. Did the PSU make a similar       >> sound when you powered it on?       >> This may be the same problem you were having before when the machine       >> shut down randomly. Disconnect the PSU, give it a minute and try       >> restarting it using the same method as before. If it powers on, just       >> leave it running, not touching anything and see if it shuts down on its       >> own again.       >> Even a dead short on one of the voltage rails (touching DMM probes or       >> whatever) should not cause the the internal fuse to blow. An       >> over-current protection (OCP) should kick in and shut down the unit.       > Thomas was right, it´s a relay that turned PSU off, not a fuse. I put       power cord on, closed pins 1-2 and PSU cooler starts. I measured       > pins 5-3, was +5 V, pins 5-7 was -12 V, pins 5-16 was +5 V and when I       measured pins 5-4 I got +12 V but power went off. Like Thomas I guess that at       the first time after 10 years when I booted my 8595 it starts displaying few       checkpoints and went power        off. Any guesses what caused a relay to go off?       >              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
(c) 1994, bbs@darkrealms.ca