Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!mjbtn!raider!sheperd
From: sheperd@raider (Charles Cain)
Newsgroups: sci.electronics
Subject: Re: Baffling Buzzing Boob tube
Message-ID: <3.22BDE1BC@raider>
Date: 20 Jun 88 18:17:11 GMT
Organization: FidoNet node 116/12 - The Amiga Advocate, Nolensville TN
Lines: 33


In message (1791@loral.UUCP), jlh@loral(Jim Harkins) writes:
>My TV set has a loud buzzing noise whenever white text is displayed on 
>the screen...
What you are experiencing is what we in the industry call sync buzz. The 
problem is that the white level is of such a high magnitude that it is 
getting into the synchronizing pulses and is being introduced into the 
audio portion of the TV signal. Probably what has happened is an 
amplifier in the front end of the TV set has gone bad and has too much 
gain for the rest of the amplifiers in the set. A couple of questions 
though. 1) does it do it on ALL TV stations in your area, and 2) have you 
tried playing with the controls on the front of the set. If it is only on 
1 station, then they have a serious problem. If not, then it would 
probably be in your best interest to get a new set since it is 10 years 
old and the capacitors in it will start drying out right about now and 
you will have more problems like this. Hope this helps you out Jim.
       
  Charles R. Cain, Broadcast Engineer,WTVF-TV Nashville, TN
  a/k/a sheperd@raider.UUCP
  Disclaimer: These are my opinions after YEARS of learning them.


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