Xref: utzoo sci.electronics:5104 rec.autos.tech:6473
Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!oliveb!pyramid!prls!philabs!linus!gateway.mitre.org!carlson
From: carlson@gateway.mitre.org (Bruce Carlson)
Newsgroups: sci.electronics,rec.autos.tech
Subject: Re: Unidentified noise from my car stereo.
Keywords: Hum, Noise, Annoyance
Message-ID: <44684@linus.UUCP>
Date: 10 Feb 89 13:35:08 GMT
References: <Feb.9.10.32.35.1989.24408@caip.rutgers.edu>
Sender: news@linus.UUCP
Reply-To: carlson@gateway.mitre.org (Bruce Carlson)
Organization: The Mitre Corporation
Lines: 17

In article <Feb.9.10.32.35.1989.24408@caip.rutgers.edu> wolpert@caip.rutgers.edu (Seth Wolpert) writes:
>One of my trusty vehicles, a 1982 Nissan Stanza has a strange noise
>coming through the speakers.  It's a hum- sounds like a couple of
>hundred hertz, with the following symptoms;
>The pitch and loudness never vary (i.e. with engine RPMs).
>It only occurs when the lights (parking lights, low beams, or
>high beams) are turned on.



Try varying the brightness of the dash lights and see if the noise varies.
My Honda gererates noise from the dash light dimmer if it is set at
anything but full brightness.  I'm now used to having the panel lights
set on full brightness. 


Bruce Carlson