Date: Mon, 22 Sep 1997 01:06:38 -0400 (EDT) From: Chuck Robey <chuckr@glue.umd.edu> To: Mark Mayo <mark@quickweb.com> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: My monitor's got the Shakes... Message-ID: <Pine.BSF.3.96.970922010427.24355Z-100000@Journey2.mat.net> In-Reply-To: <19970922000212.52880@vinyl.quickweb.com>
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On Mon, 22 Sep 1997, Mark Mayo wrote: > 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? I have two, of nearly the same vintage, DX-17F I think. It's really inconvenient to turn it upside down and search out the exact model number. One has the little LCD readout (the older one) and one hasn't. I wish they hadn't stopped making the LCD readout, it's been very convenient to have instant verification of the mode. > > > > > 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 > > ----------------------------+----------------------------------------------- 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! ----------------------------+-----------------------------------------------
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