Bringing up an older Mac

[Roy J. Tellason]

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 
them out.


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