I also have a KCT. Never even hinted at any issue. I would try to isolate the problem. Perhaps disconnect everything connected to the pre, unplug the unit, replace the fuse, plug it back in, then turn it on. The KCT goes thru a small boot up cycle prior to going into the "on" mode. If it goes thru the cycle and stays on without the fuse blowing then the issue would be somewhere else.
If it still doesn't work contact Steve Lakrone at "The Service Dept". He used to work for Krell and is the The Man.
Hope this helpe, John
If it still doesn't work contact Steve Lakrone at "The Service Dept". He used to work for Krell and is the The Man.
Hope this helpe, John