[Elecraft] K2 build - Control board Resistor SIPs not marked right.

[Ian Stirling]

On Monday 20 March 2006 15:01, Darwin, Keith wrote:

> I'm trying very hard to avoid any rework.  Rework means I have to take
> the board to work and I don't want to do that.  I believe by being
> careful I should be able to avoid any rework during the process.  We'll
> see...

Keith,

  I built my K2 in June last year.
The most important step in my opinion is to
do a full inventory, at the same time partitioning
components that look similar to separate marked
locations.  I used two cheap drawer sets with around
a hundred drawers.  I marked the drawer number in the
inventory pages of the manual for every item.
  There are many reasons for doing this.

 Identifying parts is easier, e.g., there may be three
capacitors of the same value, and two that are similar
looking but different.  Identifying them and separating
them is easy at this stage when some items can be
identified by a process of elimination.

  An obvious advantage is that missing parts will be
discovered and a quick delivery from Elecraft won't
hold up progress.  My K2 kit did not have the fiber
washers used in mounting the output transistors or
speaker.

  Having completed a full inventory in this way,
every part has already been identified once and placed
so that it can be retrieved with a low chance of
fetching the wrong part.
  On fetching it to solder it in, I checked it a
second time.  And I made a third check with the
soldering iron in my hand.

  I had one missing hearbeat when the construction
notes referred to parts already installed, and
I had not installed them.  I had this awful fealing
of having installed the display or a large IC that
would need to be removed to install something I had
missed.  Luckily it was not critical.
  My error was that two pages had stuck together and
I had skipped two pages.  If I build another K2, I will
make sure that turning pages results in the correct
sequential page number.

  I'm sure triple checking every component was a
key to my not needing to rework anything.

Ian, G4ICV, AB2GR, K2 #4962
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