Dohn,
You may or may not have to spend all afternoon checking the soldering, but I
can tell you that a solder splash on the thermistor board is one of the most
common problems with the PLL.
As a quick check, measure the voltage at U6 pin 5 - it should be 4 volts
(+/- 10%) - if it is not, then for sure you have a problem with the
thermistor board.
You can get a view of the back of the thermistor board by removing the front
panel and control board. Look carefully at the junction of RE and RF - it
is easy to create a solder bridge to ground there.
> -----Original Message-----
>
> All has gone splendid thus far in the K2 construction. That is, till now.
> I am in alignment and test,
>
> Part II. VCO alignment:
>
> I have the correct slug tuned inductor installed at L30. When I
> connect my
> DMM to R30 (Lt side) and ground, VFO set to 4000 kHz, I get a reading of
> 7.95 volts. Turning L30 (as you may have guessed) is doing nothing. Am I
> doomed to checking solders my entire Sunday (which is still more fun than
> watching the Lions lose) or is there a usual suspect or problem spot?
>
> Thanks
>
> Dohn - N8EWY
>
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