Re: Multinorm TV woes - no NTSC color display

["Alex Freed" <alexf@mirrow.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
Td-dnWZA3MK5uFbZnZ2dnUVZ_qWdnZ2d@comcast.com">news:Td-dnWZA3MK5uFbZnZ2dnUVZ_qWdnZ2d@comcast.com...
> > Yes, I did. Didn't produce any visible change whatever. That capacitor
> > modifies the color burst phase, not the phase of the visible picture
> > itself, right?
>
> That's right.  And it doesn't modify the *frequency* at all, so
> it would not affect detection of the color burst.
>

I disagree. A series capacitor is capable of "pulling" the resonant
frequency of the quartz crystal
by a few hundreds of Hz. That is what a cap on an A2 board does.
The TV has a certain lock-in range. For a color burst to be recognized, the
frequency must
be within this range.

-Alex.