Does anybody have any experience with a buzzing internal power supply on the K2500RS? It comes and goes, and is pretty audible, though it doesn't really affect the function of the unit. I've tried looking for a replacement on the internet to just swap out the part, but am having no luck. Local technicians want to charge me $60 or more just to look at it. Seems like an easy problem to fix, though.
It sounds like the power transformer has a few loose windings. As I recall the transformer is rather large in the 2500R and would probably cost quite a bit to replace. Try touching the transformer and seeing if it is the culprit. See if you can do anything to stop the buzz, tape, etc. You might find the transformer is just loose????? If that is the problem the easy fix is to replace the transformer. Not the cheapest fix.... Let me know if I can help. Bob Cap bob at parallel dot tzo dot com 218-749-4056 "Frank Benn" <> wrote in message newspHVd.11258$... > Does anybody have any experience with a buzzing internal power supply on > the K2500RS? It comes and goes, and is pretty audible, though it doesn't > really affect the function of the unit. > > I've tried looking for a replacement on the internet to just swap out the > part, but am having no luck. Local technicians want to charge me $60 or > more just to look at it. Seems like an easy problem to fix, though. >
"Bob Cap" <> wrote in message news:v1KVd.88956$4q6.6362@attbi_s01... > It sounds like the power transformer has a few loose windings. As I recall > the transformer is rather large in the 2500R and would probably cost quite > a bit to replace. Try touching the transformer and seeing if it is the > culprit. See if you can do anything to stop the buzz, tape, etc. > > You might find the transformer is just loose????? > > If that is the problem the easy fix is to replace the transformer. Not the > cheapest fix.... > > Let me know if I can help. Thanks, Bob. The transformer itself doesn't seem to be loose - although I'll check more closely to be sure. The sound it makes is the sort of buzz you'd hear coming from some power lines, only on a smaller scale. Sounds like electrical resistance. It would really be nice if I could fix it without an expensive repair bill. I tried googling the part number on the off chance I could find one myself and swap it out, but no luck. I have to say, the K2500 still sounds great today. It's still my favorite board for strings, acoustic guitar, wind instruments of all types, and certain classic synth sounds.
On Fri, 04 Mar 2005 07:25:29 GMT, "Frank Benn" <> wrote: >The transformer itself doesn't seem to be loose - although I'll check more >closely to be sure. The sound it makes is the sort of buzz you'd hear >coming from some power lines, only on a smaller scale. Sounds like >electrical resistance. Electrical resistance doesn't sound like anything You're hearing vibration from a transformer. Sometimes you can cure it by tightening the mounting arrangements or by jamming something in to stop it vibrating. Be careful you use non-conducting material that wont melt, that you don't put strain on soldered connections and that you don't obstruct cooling airflow. A replacement psu of the same model would be prone to exactly the same problem :-( Though Kurzweil sometimes use non-standard connectors on their power supplies, there's nothing special about the voltages they provide. You could make up an alternative power supply.
