[Elecraft] K2 problems

wsm at amaonline.com wsm at amaonline.com
Sat Mar 15 17:31:39 EST 2008


Hello
I'm assembling my second K2 and am having a bit of a problem.
I am more of an operator than techniciation.
Everything went good up until the second test. At that point
my BFO wasn't working. While trying to find out why it wasn't
working, I did something that made the frequency counter and volt
meter stop working.
First off, my 8 volt regulator on the control board is only 
putting out 7.6 volts. Is that enough to work ok?
Second, none of the voltages on control board U2 are anywhere
near where they should be, except pin 8 which is 7.63 volts.
Pins 1,2,and 3 have 3.4 volts instead of 6.9. Pins 5,6, and
7 have only 3.69 volts instead of 7.3.
Control board U7 has 0 volts instead of 5 volts on pin 5,  and 5
volts instead of 0 volts on pin 6. Could this be another manual
error, it says they should be the opposite.
U6 has the voltages on pin 24 and 25 reversed, according to the
manual, pin 24 actually has 0 volts and 25 has 4.9 volts.
Could any of this be my problem, or am I looking in the wrong 
place like I normally do!
Any help appreciated.
73
Scott N5SM




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