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Re: Making a colour IIc 9" monitor from Mac Color Classic
- Subject: Re: Making a colour IIc 9" monitor from Mac Color Classic
- From: Eric Smith <eric-no-spam-for-me@brouhaha.com>
- Date: 18 May 2003 01:01:18 -0700
- Newsgroups: comp.sys.apple2
- Organization: Eric Conspiracy Secret Labs
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"Tim Haynes" <timhaynes@alumni.NO.SPAM.PLEASE.uwaterloo.ca> writes:
> I just picked up a Mac Color Classic today which appears to be dead except
> for the CRT. I see that it has a 9" viewable region, much like a IIc's
> monitor. Any hope of me replacing the IIc's mono CRT with the Color
> Classic's CRT to yield a colour IIc monitor,
No.
> or are the
> electronics/frequencies hopeless different?
Yes.
The high voltage supply of the monochrome monitor doesn't generate
a high enough second anode voltage for the color tube. And you can't
use the HV supply from the Mac Color Classic because it depends on
a higher vertical scan rate than the IIc produces.
It's one of those things that's theoretically possible if you do enough
work and buy enough parts, but it will take a *lot* of time and cost
more than buying yourself a suitable color monitor.