[Elecraft] K2 transmit low power, high current

[Wayne Conrad]

K2 #7150 is assembled.  It receives, but shows low power and high 
current on transmit.  Doing the 40 meter transmitter alignment 
procedure, I get these results.

When not transmitting: 13.6V, 0.22A
TUNE, 5.0W selected: 5.0W indicated, 13.3V, 2.00A
TUNE, 10.0W selected: "Hi cur" warning, 5.8W indicated, 13.2V, 2.50A

During transmitter signal tracing, trouble first shows up in the 
"transmitter mixer, buffer, band-pass filter, T-R Switch" checks:

(All measurements Vrms using RF probe, "key down")
Xmit mixer output (U10, pin 4): Expected: 0.16, actual: 0.0019
Buffer output (U9, pin 6): Expected: 0.200, actual: 0.0927
Ratio of Buffer output to Xmit mixer output: Expected: 12:1  Actual: 49:1
Band-Pass Filter Output (W6): Expected: 0.030, actual: 0.0318
T-R Switch #1 Output (D1 anode): Expected: 0.029, actual: 0.0305

The Pre-driver, Driver and PA voltages are, with one exception, also 
unexpected, but I'm guessing that's a result of the previous stage being 
all goofy:

(All measurements Vrms using RF probe, "key down")
Pre-driver output (Q5 collector): expected 0.120, actual 0.194
Driver input (Q6 base): expected 0.026, actual 0.017
Driver output (Q6 collector): expected 1.8, actual 2.8
PA input (Q7 base): expected 0.38, actual 1.19
RF detector input (D9 anode): expected: 2.0, actual 1.98

Where should I look next?

- Wayne Conrad