REFLECTOR:Headset Heartache

[Brian Michalk]

My mantra at work trying to get the techies to troubleshoot problems.

1) Always collect more data than you need.
2) Reduce as many possible factors before doing anything to hardware.
3) When you make a change, if it makes sense, only change one thing at a
time.

Many times I've seen pilots treat a symptom rather than solving the problem.
Try to avoid this.

Remember the recent post here regarding noisy alternator brushes?

Does this happen on the ground running on battery?
Does it happen with the alternator field turned off?
Does it happen with other equipment turned off?
Does it happen if route around the audio panel?  Dunno if this is possible.

Perhaps you have a bad ground on the instrument panel feeding from another
instrument, getting a ground through your audio panel.

Try more testing.

 Brian Michalk  <http://www.michalk.com>
Life is what you make of it ... never wish you had done something.
Aviator, experimental aircraft builder, motorcyclist, SCUBA diver
musician, home-brewer, entrepreneur and mostly single


> -----Original Message-----
> From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org]On
> Behalf Of aminetech
> Sent: Sunday, September 21, 2003 6:31 AM
> To: reflector@tvbf.org
> Subject: Re: REFLECTOR:Headset Heartache
>
>
> I don't have any ideas to offer.  Most days my radio works acceptably,
> some days the noise is bad.  Thanks for the tip on touching the plugs.
> I'll try it next time.
>
> John
>
> > I've been fighting headset noise and need relief, bad.  For several
> > weeks, after being airborne for a while, a snap-crackle-pop would start
> > in the headset.  However, I could stop it by resting my leg against the
> > fixture the headset plugs into that's mounted on the keel.  It wasn't
> > the pressure that would stop the popping, just the touch.  I could stop
> > it with a light touch of my finger.  "Untouch it" and it would
> > snap-crackle-pop again until I touched it again.  I didn't know if I was
> > acting as some kind of capacitor or ground.  Touching it was effective
> > but after a couple hours, you get a cramp in your leg.  I checked the
> > fixture and while the soldering wouldn't win any awards, there was no
> > apparent fatal flaws.  Note: touching any of the other three head set
> > fixtures would not stop the crackle.
> >
>
>
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