Ted,
After you get the collectors of Q7/Q8 straightened out, you might
investigate the spacing between the VFO encoder board and the Control
Board area that sits behind it. The leads on the encoder board must be
flush trimmed (really close to the board), and the area of the Control
Board behind the encoder board must also be flush trimmed.
You might even want to put some electrical tape over the back of the
encoder board as an added preventative measure.
Another thing you can do to increase the clearance between the front
panel encoder board and the Control Board is to add a 2nd lockwasher
between the 2 front panel standoffs and the FP board. That will
increase the clearance slightly.
73,
Don W3FPR
On 12/4/2015 9:35 PM, Dauer, Edward wrote:
> Tegsting out the newly built K2 tonight. Everything was working just
> fine. Then tried the direct frequency entry, at 10000 to see if WWV came
> in. Everything went dark. All I hear is a rhythmic popping noise in the
> speaker. Shut it off and on. No change. Unplugged power supply. No
> change. Tried to reset to factory defaults. No change. With the power
> on it just sits there, dark, making a brief popping noise about once a
> second. No switch or combination of switches changes anything.
>
> What did I do? More to the point, how do I undo it? Any ideas will be
> greatly appreciated.
>
>
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