[Elecraft] K2 Phase One Alignment Problem

[alan latz]

I need help with the 1st phase of alignment on a K2, s/n 6780. Everything
works perfectly with the exception of the Setting of the AGC Threshold
voltage on U2, pin 5.
I can only get a voltage of 3.62 volts with the R1 trimmer cap turned to
it's max ccw. The manual calls for 3.8 volts and I assume with the trimmer
set less than full ccw.
With a regulated power supply set at 12.51v, I get 12.33 going into 8v
regulator and 7.59 coming out.
Both oscillators are running as shown by Heatkit IM-2420 digital freq ctr.
X1 at 5.086 ant X2 at 3999.99.
U2 Pin voltage follows:1 @3.1, 2 @3.1, 3 @ 3.1, 4 @ 0.0, 5 @ 3.62, 5 @ 3.62,
6 @ 3.62, 7 @ 3.62 and 8 @ 7.59.

Perhaps this is not a problem. With all the K2's built, I wonder If I'm the
only one to encounter this problem.
I have examined all solder joints and redone any that were not good and
bright. I find no improper installed items. I checked the trimmer R1 and it
operates within it's range of 5.1K ohms.
I'm going to search for a "return to factory default" input in case I have
screwed up the controller with some wierd setting.

I have a Hayko 808 on order so I have no capability of desoldering any
componets at this point.

Thanks for any sugestions ahead of time.

Alan Latz KA9UCP