From: cd@notformail.com   
      
   On Mon, 24 Oct 2022 11:12:09 -0700 (PDT), "Peter W."   
    wrote:   
      
   >OK.   
   >What is known:   
   >   
   >a) Scope is blowing mains fuses.   
   >b) RIFA -branded caps blew up.   
   >c) The power-supply board was affected.   
   >   
   >Suggestion:   
   >1) Remove the power-supply board.   
   >2) Replace all, repeat: ALL the capacitors on that board of any nature, type   
   or style with the correct (but modern) replacement type.   
   >3) Check each other component on the board. Diodes, regulators, transistors,   
   whatever.   
   >4) Replace any that are either bad or the slightest bit questionable.   
   >5) Replace board - carefully (now might be an opportunity for a DBT to 'do   
   its thing' - but a metered Variac would be better).   
   >   
   >I kinda-sorta think that will do it. KISS and all that.   
      
   I do have a metered variac, so plan to use that in series with DBT   
   current limiting, as the bulb can react to sudden over-current much   
   more quickly than I can. I'll slowly bring the variac up whilst   
   checking for anything getting warm on the board. That's the best I can   
   manage as I'm no tech repairer; haven't got the necessary fine motor   
   skills, I'm afraid.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)