[Coco] CoCo2 vs CoCo3 changes

[Kevin Becker]

I don't suppose anybody has put together a CoCo3 capacitor kit to make it
easy to order them all at once?

On Wed, Jul 18, 2018 at 1:11 PM, Zippster <zippster278 at gmail.com> wrote:

> Sounds like an electrolytic cap possibly.  Look at C54, a 470uF ac coupling
> cap for the composite out as a possible suspect.
>
> Any electrolytics in the signal paths I would swap out at this point just
> to eliminate
> them.  They usually work, but are way past their expected service life at
> this point.
>
> - Ed
>
>
> > On Jul 18, 2018, at 12:06 PM, Kevin Becker <kevin at kevinbecker.org>
> wrote:
> >
> > At first the composite video was very wavy and noticeably worse than RF
> > input but that seemed to clear up after it warmed up, strangely.  At one
> > point composite seemed to stop working at all but it came back after a
> few
> > power cycles and swapping TV inputs a few times.  After giving up on
> CoCo 3
> > games I tried Buzzard Bait, which I knew worked on my CoCo 2, and I could
> > hear it playing but the screen wasn't updating and was a little out of
> > whack.  When I went back to RF Buzzard Bait played fine.
> >
> >
> >
> >
> >
> > On Wed, Jul 18, 2018 at 12:56 PM, rietveld rietveld <
> rietveldh at hotmail.com>
> > wrote:
> >
> >> 'composite issues '?   ‎Does it display in a semi black and white?   I
> >> found that my coco3 and Dragon 64 both have display issues with certain
> >> tv/monitors that use comp in.   Some work perfectly others didn't
> >>
> >> Sent from my BlackBerry 10 smartphone.
> >>  Original Message
> >> From: Kevin Becker
> >> Sent: Wednesday, July 18, 2018 11:10 AM
> >> To: CoCoList for Color Computer Enthusiasts
> >> Reply To: CoCoList for Color Computer Enthusiasts
> >> Subject: Re: [Coco] CoCo2 vs CoCo3 changes
> >>
> >>
> >> Thanks, these look great.
> >>
> >> Apparently my new CoCo 3 isn't working so well though so it may be some
> >> time before I really get to dig into it.  I plugged it in last night and
> >> had a lot of weird composite video issues.  Maybe it just doesn't like
> my
> >> TV.  The RF output seems to work fine.  I haven't been able to
> successfully
> >> run any CoCo 3 software either though.  It seems to crash or not load at
> >> all.  I did run a memory test successfully so I've got some digging to
> do
> >> to figure out what is going on.
> >>
> >> On Wed, Jul 18, 2018 at 7:22 AM, Frank Swygert <farna at amc-mag.com>
> wrote:
> >>
> >>> On 17/7/2018 14:02, Kevin Becker wrote:
> >>>> So I finally broke down and bought a CoCo 3 on eBay.  It arrived today
> >>> but
> >>>> I haven't had a chance to try it out yet since I'm at work.  It
> >> suddenly
> >>>> occurred to me though that I don't actually know that much about the
> >> CoCo
> >>>> 3.  I had a CoCo 2 back in the 80s and I bought a CoCo 2 last winter
> >> that
> >>>> I've been having fun with.
> >>>>
> >>>> I know it has more RAM, different keyboard layout, composite and RGB
> >>>> video.  I know the GIME provides better graphics.  Anything else I
> >> should
> >>>> know?  I'm especially curious about the MicroWare additions to BASIC
> to
> >>>> support the improved graphics.  Should I just RTFM or is there any
> sort
> >>> of
> >>>> quickstart list of things to know for someone upgrading from CoCo 2 to
> >> a
> >>>> CoCo 3?
> >>>
> >>> =========================================
> >>>
> >>> The "Unravelled" series of books for all three CoCos are in the link
> >>> below. You might want to start with the "Super Extended BASIC
> Unravelled"
> >>> to see how all the new commands work.
> >>> http://www.colorcomputerarchive.com/coco/Documents/Books/Unravelled%
> >>> 20Series/
> >>>
> >>> This should help also. Was printed right after the CoCo3 came out:
> >>> http://www.colorcomputerarchive.com/coco/Documents/Books/Coco%20III%
> >>> 20Secrets%20Revealed%20(Microcom%20Software).pdf
> >>>
> >>>
> >>> --
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> >>> Coco at maltedmedia.com
> >>> https://pairlist5.pair.net/mailman/listinfo/coco
> >>>
> >>
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> >>
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> >>
> >
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>
>
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