[Elecraft] Voltages for Q5 and U8?

[Don Wilhelm]

Since the DC voltages for U7 are correct, and the crystal is 
oscillating, you most likely have a problem on the band board - either a 
soldering problem or if you have the 4 band board, a problem with the 
lead tinning or positioning on T1 and/or T2.

If you do have the 4 band board, did you position the trimmer caps 
initially with the slots parallel to the long side of the board?  If 
not, do that and check again.

73,
Don W3FPR


On 9/25/2011 1:36 PM, K7MH wrote:
> With an RF probe, I did not get any reading from the first test point, PRE
> (premix) nor the latter test points in the manual.
> I do get a good reading on pin 4 of P1 on the filter board which should be
> the premix oscillator signal.
> I do get the correct voltages on U7 on the RF board when checked per the
> voltage table instructions.
>
> I do not get a reading on pin 6 of P1 on the filter board which should be
> the premix signal output.
>
> Any suggestions would be much appreciated.
> I will double check some things.
>
> Mike K7MH.
>
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