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| Heathkit H-19 Restoration | |
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by Bill Degnan - 06/20/2009 01:37 |
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Thank you for Herb Johnson who helped troubleshoot and advise repair strategy
I bought an H-19 terminal a while back for parts. The previous owner had started converting this computer into a sort of H-89, with power for disk drives and a cassette port. She/He did not get very far. Voltage regulators on the display control board - OK Power supply controller - bad 12-volt regulator (103). Not needed if we're just reverting to a H-19, but might as well fix if ever in the future someone wants to upgrade this to an H-89 with drives. UA78H12S0 Adjusted the yoke to align the display Serial port is marked "330-337", near the brightness knob. Now it works great, using now for testing systems. Reply |
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Commodore B Series Prototypes July 2006
VOLSCAN - The first desktop computer with a GUI? Oct 2006
ROBOTS! - Will Robots Take Over? Nov 2006
Magnavox Mystery - a Computer, or? Jan 2007
The 1973 Williams Paddle Ball Arcade Computer Game Feb 2007
The Sperry UNIVAC 1219 Military Computer May 2007
VCF East 2007 - PET 30th Anniversary June/July 2007
The Electronic Brain August 2007
Community Memory and The People's Computer Company October 2007
Charles Babbage's Calculating Machine December 2007
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Laptops and Portables May 2008
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Historic Computer Magazines November 2008
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