For sale are new-made reproductions of the Ohio Scientific 540B color video interface board. These boards were produced from 4000 DPI scans of an original Ohio Scientific 540B board and are 1:1 with respect to trace and hole placement. They were run on standard thickness FR4 stock, which is thicker than original OSI stock, to reduce the excessive flex experienced with original Ohio Scientific products.

These boards have been scanned and reproduced as part of the Ohio Scientific Preservation Project. Full documentation is available in PDF format online. Unfortunately, due to recent policy changes, we can no longer provide links to further information on this project. See our other listings for more reproduction and newly designed Ohio Scientific boards!