Wanting to tap the rgb port

[zeno]

Wow yours still has a sweet pix. When they came out the table
model was $1100 & we sold it $1000 with a free printer.
Teletext was just a newspaper format & also used by truckers to
find loads. It was sent by the Atlanta superstation on cable.
The set was NTSC. After video & audio detect everything was digitally
processed then back to analog for the outputs. I dont remember
the RGB but probably TTL. Look for an owners manual, OEM service
manual, training manual or Tech Topics for more on it.

One thing I would do to this set is recap ( lytics only) the vert board. A bad
cap will blow the IC. The IC has been disco for YEARS.........

73 Zeno
LFOD !