[Elecraft] Help with K2 Q7 collector resistance test

[Neal Campbell and Sarah Ferrell]

Hi all,

I have been through the archives so I know this has been asked and 
answered a few times but I still am not making much progress on this.

The problem is that my resistance test for Q7 collecter is not correct. 
With the common probe on ground and the positive probe of my DVM 
measuring resistance, its abt 280 ohms. If I reverse the leads, its 
around 408 ohms. All other measurements seem okay.

I have the heat sinks unscrewed and point in the air, not touching 
anything. I have remove T4 (as it looked like it could be a source of 
problems) and the measurements are not changing. I have magnifying 
glass inspected things, blown the top and bottom of rf board with 
compressed air, etc with no real movement.

Prior to the alignment in part two, the resistance reading on the 12v 
line was 788. I did not realize that the polarity of the DVMs could 
change the reading so I have no idea if I had the common probe grounded 
or vice versa. The alignment and test of the part 2 instructions went 
as expected.


Any ideas to unblock me?

Thanks es 73
Neal