Re: CRT TV as monitor working backwards

[KP <kjpmail@gmail.com>]

On Aug 9, 2:00 pm, Patrick Schaefer <pa.schae...@web.de> wrote:
> Am 09.08.2012 07:48 schrieb KP:
>
> > Is this normal?
>
> Yes and no. In color mode, the IIGS generates a PAL or NTSC color signal
> with chroma and luma information. In BW/text mode, the signal does not
> contain any color information and no color burst. Usually a TV decides
> based on the color burst whether it gets a black/white or colour
> transmission. In BW mode color processing is shut down to prevent color
> fringes.
>
> Today's digital flatscreens are not used to receive BW TV transmissions,
> at least not in civilized countries. Even if you watch an old BW movie
> it is still a color transmission (with a colored station logo in the
> corner). Therefore this color killer circuit is sometimes not
> implemented anymore.
>
> If this is the case with your TV you'll get the fuzzy BW picture with
> any BW source. Try an old CCTV camera or another computer.
>
> If the problem occurs only with this one IIGS, its burst generation
> circuit may be faulty. There should be no burst in text mode.
>
> Patrick


If the problem is with the IIgs burst circuit, then should the problem
be duplicated on an AppleColor Composite monitor (one that would have
customarily been used with a //e or //c)?