Re: Lost color capability!

[dalloff@freenet.columbus.oh.us (Dave Althoff)]

(lost color in a 1978 Apple ][)
Hmmm...Is that a ][ or a ][+?  I seem to remember that one of the
improvements in the ][+ was the addition of a "color killer" which drops
the color burst signal from the composite video whenever the display is in
text mode.

If I had to guess, I'd say there is a problem in the video out circuit,
where the NTSC signal is generated...or, if it is a ][+, that the color
killer is not getting deactivated properly.

Hmmm....There is a second composite video output on that machine, on a
couple of pins on the motherboard near the video jack.  Have you tried
hooking the monitor up there, to verify that it doesn't work either?  It's
a long shot, since I think the two jacks are connected to the same point
in the circuit, but heck, it's worth a try!  I've got an Apple ][
Reference Manual at work; I'll look at it tomorrow and see if I can come
up with anything.

Good luck with it, though!

--Dave Althoff, Jr.
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