Date: Mon, 22 Sep 1997 18:03:16 -0500 (CDT) From: Wm Brian McCane <root@bmccane.uit.net> To: Chuck Robey <chuckr@glue.umd.edu> Cc: Mark Mayo <mark@quickweb.com>, freebsd-hardware@FreeBSD.ORG Subject: Re: My monitor's got the Shakes... Message-ID: <Pine.BSF.3.91.970922173344.8910B-100000@bmccane.uit.net> In-Reply-To: <Pine.BSF.3.96.970921233616.24355Y-100000@Journey2.mat.net>
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On Sun, 21 Sep 1997, 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. > > It sounds like arcing somewhere in the HV section. Can you literally hear > it? > > 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. > > 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? I have seen this in the past on some "magitronic" and Mitsubishi diamond monitors. In both cases it was a transistor (Power-FET?) on the board. I looked for the burned out tranny and replaced it on the 'magitronics'. A similar problem also caused them to get darker and darker..... brian
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