Hello,
I am a fairly new builder. I have been doing some soldering on
and off for about a year. I managed my way through a NorCal
keyer and a SWL 20+. I have a few more kits here to build
and practice on...then I hope to order up a K1.
Right now I am working on a T1 ATU kit. I am at the point
where most of the components are on the boards and the
directions have me doing the resistance checks on the control
board assembly.
I am completely new to using a DMM for the most part. I have
played with an analog one a bit. I have also started to read
through the RS book, Using Your Meter. I am trying to do the
requested measurements and all three seem to be wrong.
Either I did some bad soldering (possible) or I could be using
the DMM incorrectly. I would love some guidance on this.
The first check has me test the resistance on C19 and look for
a reading of between 137 K-ohms and 148 K-ohms. Then I am
supposed to press S2 and check the resistance again and see if
it goes to between 117 K-Ohms and 135 K-Ohms. When I do
the first reading by putting the test leads on the leads of C19, I
get a reading of 142. That seems good. Then I hit S2 and
check the resistance again...I still get a reading of about 142.
That seems bad.
What is the best place to put the test leads? On the underside
of the board where the leads came through to be soldered or?
The next test has me test the resistance between D3 anode and
the - pad near D7. I don't seem to get a reading when I try it
before or after I hit S2.
When I try the Diode test....I don't see any numbers change on
the DMM when i test the various pins it asks me too.
So....any ideas? Is it my soldering or my DMM skills (or both!)
that are causing me the problem.
Any help would be appreciated.
73 de Keith KB3ILS
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