TIP: Click on subject to list as thread! ANSI
echo: audio
to: JOHN LEOSCO
from: DENNIS JENKINS
date: 1998-01-29 15:54:00
subject: HUMMmmm

JL>.MSGID: 1:123/38.0 34cf5302
JL>.PID: BWRA 3.02 [Eval]
JL>.TID: GE 1.11+
JL>Howdy!
JL>I've got a stumper for y'all to solve; at least it is stumping me... :)
JL>I recently purchased a 35" RCA picture tube-type television.  I would l
JL>to have the option of getting video sound through my audio system.
JL>I ran a set of interconnects from the line output jacks on the TV to th
JL>line inputs of my preamp.  No matter which input on the preamp (video, 
JL>CD, etc.) I tried, a high level hum came from the speakers.  As soon as
JL>interconnect is removed from the preamp, the hum is gone.  No matter wh
JL>input is selected on the preamp, the hum is present.
JL>Then I tried the same thing using the line output jacks on the VCR to t
JL>preamp.  Same Hum.  Then I tried running the interconnects from the var
JL>output jacks on the rear of the TV directly into my amplifier.  Same Hu
JL>Switching the internal speakers on the TV from "off" to "on" makes no
JL>difference.
JL>The TV and VCR work fine together and the sound from the TV itself is O
JL>The stereo system also works fine from any source; CD, Tape, turntable,
JL>except when I try to tie in the video.  Any Suggestions?  Thanks.
I bet you have cable TV!  If so it is improperly grounded and is causing a 
"ground 
loop".  Best fix is have the cable TV do it right which entails having the 
cable 
and you electrical service grounded to the same spot.  This is how I got my 
problem solved.  There is a national code for this so they have to do it.
There are gadgets of various prices that you can hook to your stereo that may 
or 
may not fix this.
Dennis Jenkins
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 * PW * sorry no taglines
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