[Heathkit] The Case of the Phantom Voltage
Robert Nickels
ranickel at comcast.net
Fri Feb 8 16:59:28 EST 2019
Fixing problems in old radios is a good exercise in deductive reasoning,
even if sometimes the clues don't lead in an expected direction. That
was the case when I ran into a phantom voltage in an HW-12 recently - a
voltage that couldn't be there according to the schematic - yet there it
was! Go here to get the whole story:
http://tinyurl.com/ycbngl4a
I think this is a very unique situation but since the same type of PC
boards were used in many other Heathkits and other radios, I thought it
would be worth passing along, just in case someone else comes up against
a similar mystery.
73, Bob W9RAN
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