2. tech-talk
  3. 191946-197971

Issue with Krell KSA-250

Hello-

It's been a minute since I've been on the forums here, but I'm glad they are still around!

I am the second owner of a Krell KSA-250 amplifier. For the past 10 years it hasn't given me any problems. Then today, when I turned it on, it emitted a rather loud buzzing sound. This wasn't coming from the speakers (like a ground loop hum), this was a very startling almost "mechanical" buzz sound. The buzz does not stop until I turn the unit off.

I'm not sure where to start. I called my local audio repair store, but they don't work on Krell. They suggested I contact Krell, which is my next step, but seeing as I'd have to freight this for it to be repaired, I'm hoping someone here might shed some light on what's happening. I've made a short 15-second video of the issue, but I don't think I can upload it here. I'm happy to provide it though.

Any thoughts you might have would be appreciated.

Thanks,

Blake

blakeh

Showing 2 responses by retiredfarmer

retiredfarmer's avatar
retiredfarmer
359 posts
 

@jayctoy Jayctoy more good ideas eliminate  the cheap easy things first. Sometimes  it does get the problem  but many times you can find an improvement  non the less

retiredfarmer's avatar
retiredfarmer
359 posts
 

I upgraded  the power service  into my house to a 200 amp service.  Anyhow every system  in the house gained both sound quality  and a hum. I got rid of the old wore and went copper all the way. Had the electrician  come  again and had him check all his connections.  He tighten  the main ground. It was already  tight but he made it tighter and the hum was gone from every system in  the house. Above where the fellow says check the power cord that is free and only takes a few minutes  if it is not the problem it was free and o ly took a couple of minutes.  Sometimes  things are that easy and that cheap.

More to discover