[Rhodes22-list] very curious

[brad haslett]

Peter,

Phantom power feeds can be some of the most
troublesome buggers to track down.  That is why A&P
mechanics disconnect all power sources to start with
just to make sure they're not chasing a non-existent
problem.  The DC-10 solution for every electrical
problem is "switch, breaker, book, book, book",
meaning, first you turn it off, then on, then cycle
the circuit breaker, then look it up in the minimum
equipment list to see if you even need the damn thing,
then the ops manual on how to fly without it, then
write it up in the maintenance log.  I've found the
same operational philosophy to work quite well on
sailboats.  Good luck!

Brad 

--- Peter Thorn <pthorn at nc.rr.com> wrote:

> Brad,
> 
> Thanks for the input.  Before disconnecting the
> battery, I first reconnected
> the speakers.  Now no noise and the CD player
> doesn't work either.
> 
> This will take more time than I have for lunch right
> now.  Any and all
> suggestions are welcome.
> 
> PT
> 
> ----- Original Message ----- 
> From: "brad haslett" <flybrad at yahoo.com>
> To: "The Rhodes 22 mail list"
> <rhodes22-list at rhodes22.org>
> Sent: Wednesday, June 08, 2005 12:07 PM
> Subject: RE: [Rhodes22-list] very curious
> 
> 
> > Peter,
> >
> > You may want to disconnect your battery and see if
> the
> > noise is still there.  That is the last ditch
> effort
> > on every electrical fire and smoke checklist for
> every
> > airplane I've ever flown and one of the first
> > troubleshooting issues as a mechanic.  Current has
> a
> > strange habit of finding its own path sometimes. 
> If
> > its still there with the battery disconnected, see
> > list below.
> >
> > Brad
> >
> > --- ed kroposki <ekroposki at charter.net> wrote:
> >
> > > Peter:
> > > 1. Bugs?
> > > 2. Harmonics
> > > 3. Wireless transmitting device in proximity
> > > 4. High power AM transmitting station nearby?
> > >
> > > Ed K
> > > Greenville, SC, USA
> > > Web Cam:
> > > www.ils.unc.edu/parkproject/webcam/webcam.html
> > >
> > >
> > > -----Original Message-----
> > > From: rhodes22-list-bounces at rhodes22.org
> > > [mailto:rhodes22-list-bounces at rhodes22.org] On
> > > Behalf Of Peter Thorn
> > > Sent: Wednesday, June 08, 2005 11:22 AM
> > > To: Rhodes 22 List Members
> > > Subject: [Rhodes22-list] very curious
> > >
> > > Hello Rhodies,
> > >
> > > Admiral Tana and I had a great shakedown 3 day
> > > Memorial Day cruise at Kerr
> > > Lake.  Now Raven is resting on the trailer
> outside,
> > > getting ready for our
> > > Upper Chesapeake trip at the end of June.
> > > (6/29-7/7)
> > >
> > > This morning, after a pretty hard rain last
> night,
> > > the cockpit speakers
> > > started making a strange noise.  First the port
> > > speaker made a popping
> > > noise.  I first noticed the noise after the
> sunlight
> > > started to warm Raven's
> > > topsides.  I boarded and verified that all
> circuits
> > > were switched off and
> > > disconnected the speaker wire lead at the
> speaker to
> > > still the popping
> > > noise. Later, the starboard speaker started up,
> a
> > > bit little louder.  So, I
> > > boarded and again, verified all circuit were
> > > switched off again and
> > > disconnected the starboard speaker wire from the
> > > speaker.
> > >
> > > Does anybody have a guess as to what could be
> > > happening?
> > >
> > > PT
> > >
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