From: ch@deja.net   
      
   On Mon, 14 Jun 2010 10:11:08 -0700, "Fred"    
   wrote:   
      
   >   
   >"Adamfarber"  wrote in message   
   news:Adamfarber.65bc95d@audiobanter.com...   
   >>   
   >> David Nebenzahl;911263 Wrote:   
   >>> On 6/13/2010 12:56 PM Adamfarber spake thus:   
   >>> -   
   >>> > Hi Mark, I unhooked everything and hooked up a speaker to one of the   
   >>> > outputs and listened to FM and I still heard the him. Thanks, Adam-   
   >>>   
   >>> The "him"?   
   >>> Oh, you must mean the "hymn".   
   >>>   
   >>>   
   >>> Whoops, meant HUM, thanks, Adam   
   >   
   >Most likely a cap in one of the low voltage supplies has failed, feeding   
   unfiltered   
   >DC to a regulator which cannot maintain smooth output voltage because the   
   input   
   >is going to zero 120 times a second.   
   >   
   >You have to be a technician with troubleshooting skills, experience with AV   
   receivers,   
   >test equipment and service information to fix this.  Assuming that's not you,   
   the unit   
   >needs to go to a Yamaha warranty station for repair (Yamaha's warranty   
   stations have   
   >access not just to service manuals but also to confidential service   
   bulletins, and more   
   >importantly they have access to the technical staff at Yamaha, which is the   
   only really   
   >competent technical staff in the business).  I can call Allen at Yamaha, give   
   him the   
   >model number, and he'll tell me what the problem is and how to fix it because   
   he and his   
   >staff know their equipment that well.   
   >   
   >Obviously, I work for a Yamaha warranty station.  That's the only company we   
   still do   
   >warranty audio work for, because it's the only one with a staff that knows a   
   damn thing   
   >about their product.  Well, them and McIntosh, but there are no Mac dealers   
   around here,   
   >so they don't figure they need a warranty station here (Reno, NV).   
   >   
   >Fred   
   >   
   >> --   
   >> Adamfarber   
   >   
      
   Allen is still around at Yamaha?  I'd have thought he would have   
   retired years ago.  Chuck   
      
   --- SoupGate-Win32 v1.05   
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