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...   
      
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