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Article #9788Re: Suggestions for an intermittent hum problem.
From: James W. Swonger
Date: Mon, 28 Jan 1991 15:33
Date: Mon, 28 Jan 1991 15:33
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A SAM's may be available for your unit. Try the TV Repair/Electronic supply places in your area. A hum that changes volume with the volume knob would indicate an open/ intermittent contact etc. upstream of the main amp. A hum that is constant is more indicative of power supply problems. There may be a poor connection at one of the recitifiers or caps. Some amps and rcvrs have separate supplies for each channel to give better isolation. See if you can cause the problem by wiggling the filter caps and rectifiers.
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!spool2.mu.edu!samsung!rex!uflorida!mlb.semi.harris.com!cica4.mlb.semi.harris.com!jwsReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!spool2.mu.edu!samsung!rex!uflorida!mlb.semi.harris.com!cica4.mlb.semi.harris.com!jws From: jws@cica4.mlb.semi.harris.com (James W. Swonger) Newsgroups: sci.electronics Subject: Re: Suggestions for an intermittent hum problem. Keywords: 60 cycle noise audio Message-ID: <1991Jan28.153323.21731@mlb.semi.harris.com> Date: 28 Jan 91 15:33:23 GMT References: <1991Jan28.144723.16008@cbnewsh.att.com> Sender: news@mlb.semi.harris.com Distribution: na Organization: Harris Semiconductor, Melbourne FL Lines: 12 Nntp-Posting-Host: cica4.mlb.semi.harris.com