Re: Alternatives to an applecolor RGB?

[MdntTrain <js@cimmeri.com>]

On Oct 5, 2:41 am, "Michael J. Mahon" <mjma...@aol.com> wrote:
> Michael Black wrote:
> > On Tue, 4 Oct 2011, Michael J. Mahon wrote:
>
> >> IUnknown <stevement...@gmail.com> wrote:
>
> >>> On Oct 4, 3:03 pm, Steven Hirsch <snhir...@gmail.com> wrote:
>
> >>>> On 10/04/2011 09:06 AM, Leandro M Polimeno wrote:
>
> >>>>> Some possibilites are :
>
> >>>>> * Using a simple COMPOSITE -> VGA box, not so good image.
>
> >>>>> * The same converter but with the "help" of:
>
> >>>>>http://www.amigamaniac.com/RGB_to_PAL_NTSC_adapter.html
>
> >>>>> Using it with the S-VIDEO port, maybe the easier and cheap method
> >>>>> if you dont
> >>>>> need/looking for an awesome image.
>
> >>>> Problem is, most converters have serious problems reproducing the
> >>>> Apple IIGS
> >>>> video signal.  It's been discussed to death in this group over the
> >>>> years.
>
> >>>> I brought up the Highway/CYP unit because I _know_ from my
> >>>> experience and
> >>>> others here that it works quite well.
>
> >>>> Steve
>
> >>> The only downside to the highway/cyp unit appears to be the cost.....
> >>> on average around $180 USD.
>
> >>> Ouch.
>
> >> Which is why trying to find an AppleColor RGB locally (Craig's list,
> >> Freecycle, Goodwill, etc.) is a good thing to try first.
>
> >> Anyone old enough to know how to fix an analog color TV can fix an
> >> AppleColor RGB.
>
> >> Replacement parts for certain unique parts (CRT, flyback transformer,
> >> etc.)
> >> can be an issue, which is why a couple of non-working "donor" monitors
> >> are
> >> handy.
>
> >> Fifty years from now, when even VGA monitors
> >> are all dust, another solution will be a necessity, as opposed to a
> >> preference.
>
> > I fear a lot of those NTSC monitors have disappeared by now.
> > Occasionally I see something tossed that might be color (I say maybe
> > because it's not a recongizable brand so it might be a monochrome monitor
> > for security cameras), but the days when I found obvious color monitors
> > lying on the sidewalk or at garage sales has passed.  It makes sense,
> > since the days of the computers that went with them have passed into
> > history.
>
> > I'm seeing a lot of tv sets being junked these days, presumably for LCD
> > tv sets, and maybe because Canada finally went to DTV at the end of
> > August. If I'd been in need of a monitor, I would have been watching
> > those closely, to find one with video input.
>
> > On the other hand, I've used a Commodore monitor since about 1997 as a
> > "tv set", fed from a VCR.  It's held up well.  Oddly, I was using one
> > before this one, and the on/off switch broke, and it just sits there.  I
> > have another one that I found with a broken on/off switch.
>
> > So especially if someone is using a monitor in limited fashion with an
> > old computer, I suspect the life span can be quite long, assuming it
> > wasn't worn out before you get it.
>
> Exactly.
>
> Occasional use is much better for old electronics than years of disuse
> followed by a sudden power on.  That's tough on power supply caps.
>
> If it's been years since a device was used, try wiring a 100W
> incandescent bulb in series with it and then turning it on for an hour
> or so.  Oh, wait--100W bulbs are going away, too!  ;-)
>
> More seriously, essentially every equipment failure is the result of a
> single common part failing, which, when found and replaced, restores
> correct operation.  If you like to use your vintage gear, learn enough
> electronics to repair it--or lose it to the first failure.
>
> -michael
>
> NadaNet 3.1 for Apple II parallel computing!
> Home page:  http://home.comcast.net/~mjmahon/
>
> "The wastebasket is our most important design
> tool--and it's seriously underused."- Hide quoted text -
>
> - Show quoted text -

Would you use a lightbulb on a switching power supply under its normal
load?   I'm reluctant to do this as lowering the voltage to a switcher
only causes current through some of its stages to rise.    Seems
better to put the light bulb on the B+ after the switcher for a
monitor, at least.