From: ehsjr@verizon.net   
      
   On 10/22/2022 10:26 AM, 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. 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   
      
   Thia might help:   
   https://www.tek.com/en/manual/2465a-and-2467-service-manual   
      
   Ed   
      
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