Pre amp fault
Need some help here please.
I have a Krell KSP 7B pre / KSA100S power amp which has recently been giving me problems
When I turn the combo on, most times it is fine, everything quiet. After a while though a high pitched 'white noise' type sound is heard - even with the volume muted.
In addition, sometimes there is a hum, apparent on all sources, but worst with the phono stage. It will be virtually silent, then this too suffers with hum.
When I use another pre amp, no problem.
Any help would be really appreciated.
These symptoms are not sufficient to pin-point a simple cause. What level of experience/abilities in electronics do you have?
one channel or both?
does it change channels when you swap interconnects?
Thanks for your reply.
Very little electronics knowledge - I can use a multi meter to test the simple stuff and can use a soldering iron.
I just wondered if the symptoms may have been a dead giveaway to an experienced hand for a particular fault - leaking capacitors or something.
The thing that is intriguing me the most is that the 'white noise' I described is apparent even with the volume muted.
What your reply to Andrews question ??
It could brings us closer to the problem.....
Your volume sits in the front end of the circuit, so no mystery there......
I would first suspect a bad soldering, and properly a soldering to ground since you sometimes get hum.........
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