Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!wuarchive!hsdndev!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.terminals
Subject: Re: vt220 noises
Message-ID: <16407@smoke.brl.mil>
Date: 13 Jun 91 19:02:12 GMT
References: <7509@cactus.org>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 11

In article <7509@cactus.org> cheselka@cactus.org (Mike R. Cheselka) writes:
>I just noticed a sound like static electricity coming from my vt220. I
>took the hood off and found it emanating from the main ( high voltage) lead to
>the CRT. It appears to do no harm, but the faint crackling sound every few
>minutes is disturbing. Is this anything to worry about?

It seems to be corona discharge, due possibly to dust or grime around the
HV lead.  I would suggest that you not mess with it yourself -- unless you
already know enough to not have to have asked the question, you're likely
to get severaly injured or even killed if you mess with the HV lead.  Get
a competent video service technician to investigate it.