From owner-freebsd-hardware Sun Sep 21 21:01:45 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id VAA07908 for hardware-outgoing; Sun, 21 Sep 1997 21:01:45 -0700 (PDT) Received: from vinyl.quickweb.com (vinyl.quickweb.com [206.222.77.8]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id VAA07902 for ; Sun, 21 Sep 1997 21:01:41 -0700 (PDT) Received: (from mark@localhost) by vinyl.quickweb.com (8.8.5/8.6.12) id AAA18024; Mon, 22 Sep 1997 00:02:12 -0400 (EDT) Message-ID: <19970922000212.52880@vinyl.quickweb.com> Date: Mon, 22 Sep 1997 00:02:12 -0400 From: Mark Mayo To: Chuck Robey Cc: Mark Mayo , freebsd-hardware@FreeBSD.ORG Subject: Re: My monitor's got the Shakes... References: <19970921230233.54358@vinyl.quickweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.81e In-Reply-To: ; from Chuck Robey on Sun, Sep 21, 1997 at 11:40:39PM -0400 Sender: owner-freebsd-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Sun, Sep 21, 1997 at 11:40:39PM -0400, Chuck Robey wrote: > On Sun, 21 Sep 1997, Mark Mayo wrote: > > > Hi all... well a bad couple of weeks on my hardware seems to be > > getting worse. Suddently, my monitor is "shaking". Basically, every > > 10 minutes or so (not regular) a small, rapid shaking happens. A > > slight brightness fade-in, fade-out sort of happens at the same time. > > The picture would appear to be moving straight up and down (by a > > really small amount, but enough to be REALLY damned annoying). > > > > Any idea what the cause could be?? > > > > This monitor has already developed a pretty serious case of ghosting, > > so I fear that this fit of shaking is my signal that "she's gonna blow!". > > > > It's a 17" MAG, about 3.5 years old I believe. Been a faithful monitor, > > but it's been going downhill at a break-neck speed the last 6 monhts or > > so. > > Oh, lovely. I'm reading this on a 3.5 year old 17" MAG. What model? > > It sounds like arcing somewhere in the HV section. Can you literally hear > it? Hmmm. I haven't really heard anything, but when you mentioned it I put my ear on the side of the thing -- all I heard was a slight buzz sound, and an occasional crackle, which sounded a lot like a static discharge. There doesn't seem to be a connection with the "shake/jitter" and the sound inside the monitor though. > As the capacitors get older, sometimes they go bad. If you're lucky, > that's it. If you're not, it could be something expensive, like a > transformer arcing. Affecting multiple sections also makes it sound like > the power. It's very small jitter, and very rapid - I'm not imagining an 'arc' producing this, but I have no knowledge about how monitors work at all! I've been told that the ghosting I'm experiencing is a common sign of the capacitors getting old and bad -- if they are inexpensive then I certainly hope the capacitors are the problem. How much does a repair like that usually cost? > > One other thing to watch for ... MAGs can't stand overheating. You don't > have some printouts laying on the top of the monitor, do you? No, I keep it wide open, since I noticed long ago that the thing gets pretty darn hot. In fact, I've thought about opening up the ventilation holes a little with a drill since it really is very hot (keeps me warm in winter ;-) Thanks for the tips, -Mark > > > > > TIA for any tips, like "you can fix this by .." :-) > > > > -mark > > > > -- > > ------------------------------------------------------------------------ > > Mark Mayo mark@quickweb.com > > RingZero Comp. http://vinyl.quickweb.com/mark > > > > finger mark@quickweb.com for my PGP key and GCS code > > ------------------------------------------------------------------------ > > "The newest book, The Dilbert Future, took a broader view, describing how > > idiots will threaten every aspect of business, technology and society in > > the future." --Scott Adams > > > > > > ----------------------------+----------------------------------------------- > Chuck Robey | Interests include any kind of voice or data > chuckr@eng.umd.edu | communications topic, C programming, and Unix. > 213 Lakeside Drive Apt T-1 | > Greenbelt, MD 20770 | I run Journey2 and picnic, both FreeBSD > (301) 220-2114 | version 3.0 current -- and great FUN! > ----------------------------+----------------------------------------------- -- ------------------------------------------------------------------------ Mark Mayo mark@quickweb.com RingZero Comp. http://vinyl.quickweb.com/mark finger mark@quickweb.com for my PGP key and GCS code ------------------------------------------------------------------------ "The newest book, The Dilbert Future, took a broader view, describing how idiots will threaten every aspect of business, technology and society in the future." --Scott Adams