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Re: A2M6020 monitor questions

MdntTrain wrote:

I agree--it would be nice to have a schematic!



Yes, it would.  I've seen (and have) schems for the Monitor II and
Monitor III, but I've never run across any for the seemingly much more
common Color Composite IIe/IIc monitors.   I would think the Apple
dealers had them.




If it has a vertical grid for a shadow mask, then it will have an
in-line gun.  Remember, its the geometry of the gun position and the
shadow mask that keeps each gun illuminating only its color phosphor.

Generally speaking, if you have a monitor that needs a new CRT, it's
probably time to get a new monitor.  ;-)



My CRT is fine -- I'm trying to learn and understand this particular
monitor.  I'd like to adapt it to accept Y/C (SVideo).   About all I
know is that for Y/C, I'd need to tap in after Y+C are normally
separated within the monitor, at some point right before chroma
demodulation.


Exactly.


I'll post here any specs I find out about this monitor as they're
hard to come by.


That would be very useful!



I've seen places that will produce a schematic for you if you send
them the circuit board.  No idea on cost, but I imagine it's not
cheap.  Would this be worth pursuing since it's been a long time and
no schems have turned up for these monitors?   If I did this, would
anyone interested in a schematic at some point mind paying $10-$20 for
a copy to help me recover (over the long term) some of the expense?


This is an interesting approach.  I'd be surprised if the reverse-
engineering was inexpensive, though.  Then there's always the question
of accuracy vs. cost...


While it might be said to just use another monitor, I'm interested in
long term preservation of original equipment.  At some point, those
interested similarly are going to be faced with having to do
restorative repairs as there will not be any working replacements.


Eventually.

-michael

NadaPong: Network game demo for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

"The wastebasket is our most important design
tool--and it's seriously underused."