From: whit3rd@gmail.com   
      
   On Saturday, October 22, 2022 at 7:26:11 AM UTC-7, Cursitor Doom wrote:   
   > Hi all,   
   >   
   > So my main analogue scope, a Tek 2465A, has gone faulty. Keeps blowing   
   > main fuses (the 2A one on the rear panel). I opened the case and found   
   > two RIFA caps that had obviously blown, so replaced them, but it's   
   > still blowing fuses. I can't be 100% certain, but I'm pretty sure   
   > there's a fault with the PSU board as I get the briefest whiff of   
   > burning from that area each time I put a new fuse in and power up.   
      
   First thing to check is the rectifier; that diode bridge can fail, and   
   apply AC to the filter capacitors, and... that'll take out the fuse.   
   Not sure why the RIFA capa goes, though; maybe just a power surge some   
   time last week?   
      
   There seem to be some surge-suppressors (gas discharge?) in the diagram, they   
   might   
   have failed short in a surge..   
      
   --- SoupGate-Win32 v1.05   
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