Tom,
You will have to begin lifting resistors and inductors if you cannot
find a solder bridge by inspection. If you end up doing that, do it in
an orderly fashion and keep notes as you work - in the heat of
troubleshooting often the thought comes up which says "did I try that
already?" - notes will help with that question.
As Mike K8CN indicated, take a look at
http://elecraft.365791.n2.nabble.com/K2-RF-Board-resistance-check-failure-U6-Pin-8-tt7559095.html#a7559102
and see if you can locate the fault using that procedure.
It is very unlikely that you have a bad component, but you should verify
the value of all resistors that are connected to the 8A and 8B voltage
rails.
73,
Don W3FPR
On 4/27/2013 5:44 PM, Tom Field wrote:
I've reached the stage in K2 construction for the first resistance checks
on the RF Board. Everything comes into spec except the 8b signal on U6 pin
8 measures 38.4 ohms to ground and the spec calls for > 100 ohms. Any ideas
where to look?
Tom
KI6NRD
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