From: cd@notformail.com   
      
   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. The   
   new fuse blows again before I get to see any smoke coming from   
   anywhere at all. I'm linking to a diagram of the PSU as I'm not   
   familiar with this circuit topology. If anyone can spot a component   
   here that could have gone low-resistance and might be a good candidate   
   for out-of-circuit testing, by all means let me know.   
   Thanks,   
      
   CD.   
      
      
   https://disk.yandex.com/i/UhxATIy-6Y0LIA   
      
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