Perhaps selecting a more compatible station?

On Sun, Apr 3, 2011 at 9:46 AM, Jason <uberhare@gmail.com> wrote:

> I've had a few cars with a similar whine come from the radio.  Replacing
> the
> radio fixed it for me.
>
> Jason
>
>
> On Sun, Apr 3, 2011 at 12:36 PM, neil n <musomuso@gmail.com> wrote:
>
> > Sure sounds like the vehicle electrics are the cause or at least part of
> it
> > and that head unit likely ok. But to be sure....
> >
> > Do you have a car radio you can hook up?
> >
> > My thought: if something went slightly hinky on head unit (cap where
> power
> > goes in? Final stage amp?), and alt. etc. is supplying less than best
> > quality power, this might produce a sudden change.
> >
> > Neil.
> >
> > On Fri, Apr 1, 2011 at 5:58 PM, Alistair Bell <albell@shaw.ca> wrote:
> >
> > > A  few months ago the radio in the van has developed a whine when
> > > engine running.
> > >
> >
> >
> >
> > >
> > > Came on all of a sudden, and only on the front speakers which are
> > > powered by separate amp and go through crossovers.
> > >
> > > What I have done:
> > >
> > > -redid all grounds, signal, and power leads to front speakers,
> > > crossovers, and amp - no change
> > > -swapped in another amp - no change
> > > - tried alternate pair of rca jacked leads from head unit to amp,
> > > straight run, not crossing power lines - no change
> > > - new antenna and lead to head unit (old one was really bad at head
> > > unit) - no change
> > > - if i grounded amp directly to battery post instead of body, noise
> > > was louder. BTW, the amp ground wires are a short run twisted trio.
> > >
> > > Recently the noise has become louder and worse.
> > >
> > > Today I pulled the alternator and:
> > >
> > > -pulled brush pack and cleaned connections
> > > -pulled the noise reducing caps on alternator and cleaned connections
> > > -removed the diagnostic plug (TDC sensor lead and plug) from alternator
> > > -pulled distributor cap and cleaned, above and below black plastic
> > > shield
> > > -cleaned up edge of rotor
> > > -cleaned all the grounding points (pivot bolt area etc) on alt body
> > >
> > >
> > > these things have improved things, the whine is much quieter.
> > >
> > > Can anyone suggest anything else?
> > >
> > > thanks
> > >
> > > alistair
> > >
> >
> >
> >
> > --
> > Neil Nicholson '81 VanaJetta 2.0 "Jaco"
> >
> > http://tubaneil.googlepages.com/
> >
> >
> >
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
> >
>