[XCSSA] Blowing Fuses and Unsure Why

[X-otic Computer Systems of San Antonio]

>The 9VDC half...well, seems to work for a few  seconds and then 
>blows a fuse. I'm not sure why. I've got LEDs (with  resistors) 
>hooked up to each output and, for some reason, the 9VDC  
>lights up for a few seconds and then my fuse blows. Everything looks  
>connected properly but there is no load on either side except for the  
>LEDs. 

LED's use only a few mA (depending on series resistor), take a look
at your filter capacitor(s) on the 9Vdc section. Carefully lift the ground
lead(s) to isolate them, also check their voltage ratings.  Sounds like one
of them is breaking down.


>I'm thinking it has something to do with grounding. I haven't   connected 
>the grounds on either side and I'm guessing that might be my  problem? 
>does it matter where I connect the grounds together?

  No, providing you're using supplies isolated from the AC line..

Hard to pin point without seeing your schematic.

Lou
 

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