I have not previously posted on this thread, but there has been a lot of
good information posted by others.
Let me re-enforce what others have said on this subject. Some excerpts
follow:
- Look for the 'simple' things first.
- Break things down into basics - work into a good dummy load, work with
minimum connections to the transceiver. (It might be external equipment
causing the problem).
- Verify your test equipment.
- Do not make assumptions.
- What is working is just as important as what is not, but do verify
what is working first.
- Work in an orderly manner - take notes if your memory of what has been
done is lacking in the 'heat of battle'..
- If it was working before, there is only a single failure point.
- The problem is not usually the worst case scenario.
- RF voltage checks are important part of troubleshooting if you have a
transmit problem.
- Intermittent problems are a bear to find - when you touch something in
the area, it works and the problem disappears - look for faulty solder
connections.
Familiarity with the block diagram (or better yet the schematic) of the
transceiver is a great help as is some familiarity with the basics of
electrical laws and circuits. (i.e. if the emitter DC voltage of a
transistor is not correct, and the resistor value is correct, then the
transistor is not drawing the expected current - simple Ohms law).
73,
Don W3FPR
On 5/8/2013 6:33 PM, Stan AE7UT wrote:
Well let us hope I learned from the experience!
I just ordered a K2 to build. I'm so grateful for
the patience and help from the group.
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