Bringing up an older Mac
Roy J. Tellason
rtellason at verizon.net
Thu Apr 10 14:17:48 CDT 2008
On Thursday 10 April 2008 13:57, Mark Tapley wrote:
> On the Plus, there are also a set of variable resistors on
> the analog board setting various parameters (width, height, etc.) of
> the video. Those might also be corroded. Running them back and forth
> and then back to the original settings might clear that, or some
> contact cleaner (which is probably a better treatment for the
> connectors than what I list above) might be a good idea.
I'd tend to avoid tweaking those if at all possible, unless you have a pretty
good indication that it's the problem...
> Finally, capacitors on the analog board might be going bad.
> An ESR meter could give you some indications there.
I think that's pretty likely. I had one monitor that I was given a number of
years back, EGA when I'd been running mono before that (g), and it was
_very_ wavy, so changing the cap out between that and a scrapper nearby with
a similar chassis fixed it.
And speaking of older monitors, I mentioned this in here once before, but
this guy is offering me a *pile* of older monitors -- mono, cga, ega, but
nothing newer. I'm holding off on going and getting them because I don't
really have a place to put them at this point in time, no storage available,
and he said in recent correspondence that I'd need a truck or a van to be
able to haul them all away. I've got past correspondence from a few of you
folks, but anybody else who's interested, drop me a line offlist, and
let's talk. I'd sure rather get 'em to somebody who can use them than scrap
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