Bill Yakowenko wrote:
One other thing, before soldering stuff onto that
board, make a copy
of it. (Do photocopiers make decent prints of bare boards?) Once
a board has chips soldered onto it, it can be a pain to figure out
which things connect to what. Having a bare-board print could help
a lot in reverse-engineering the schematic (although I suspect there
are still MP-A schematics to be had out there). And who knows, you
might someday want to clone that board.
I've found that the best way to make a dupe of the board is to set it on a
full page scanner, in line art mode. Adjust the "gamma" and
contrast/brightness as needed to get a good black error-free copy. You can
even use it to make photopostives using the transparency film they make for
copiers. This gives you an exposure film when using photosensituve printed
circuit board.
I've done the same to make replacement boards where the original was
chemically or physically damaged on radios, vcr's, etc...
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Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website:
http://members.tripod.com/~RHBLAKE/
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* Parts/Service/Upgrades and more for MOST Computers*
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