[Elecraft] K2 VCO Alignment - Low voltage

[Don Wilhelm]

Mark,

First check the DC voltage on U6 pin 5.  It should be near 4 volts - if 
not, you have a problem on the thermistor board, likely a solder bridge.

Then recheck the PLL reference oscillator range at TP3 using CAL FCTR. 
Tell me the high and low frequencies.

Then check the VFO frequency at TP1 (using CAL FCTR) when tuned to 
4000kHz and again when tuned to 7100kHz.

73,
Don W3FPR

On 4/21/2019 1:43 PM, Mark Yergin wrote:
> I'm getting 0.02 V at R30, not 6V.  Turns on T5 correct and wound per
> image.  Reflowed the four solder joints and verified continuity between 1
> and 2, 3 and 4. C72 is correct value (label 271) and reflowed.  L30 is the
> correct value (large slot), and reflowed.  D21-26 confirmed as correct
> values.  C71-74 confirmed as correct values.