From: pertti.helander@pp.nic.fi   
      
   tiistai 10. tammikuuta 2023 klo 14.13.12 UTC+2 slavo...@gmail.com kirjoitti:   
   > On 10.01.2023 3:54, Louis Ohland wrote:    
   > > If you open the PSU, look for dirt / dust / grease, you can use a Qtip    
   > > and alcohol, and / or compressed air to remove the grunge. Though odd,    
   > > the internal heatsinks and / or components may be coated. The "clicking"    
   > > might be thermal self-protect. Maybe.   
   > I really doubt thermal protection would act this quickly, especially    
   > without a load. But I agree that dust and grime can cause thermal and    
   > other issues if you give it enough time.    
   >    
   > If you are gonna de-dust the thing, watch for any broken-off pieces.    
   >    
   > But based on the observed behavior, I'd be looking for bad electrolytic    
   > caps first and foremost (bulged package, leaked electrolyte,    
   > shrunken/broken sleeve indicating heat exposure). Even if the caps look    
   > ok, they may still be bad. You would have to measure the capacity and    
   > ESR to know for sure. Or shotgun it and replace them all. But let's not    
   > get ahead of ourselves...   
   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 5-1 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?   
      
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