[Elecraft] K2 4175

Sat Apr 10 12:44:00 2004

Hi

This is almost always one of two things a bad or missed solder joint on =
the LCD or LCD driver or a pin bent under or not in the socket on the =
LCD driver IC. It is normal that the LCD pins do not go through the =
board. You must hold the soldering iron on each pad a little longer than =
normal so the solder will flow through to the top side. Look over each =
joint on the top to make sure it has a good connection. Touch up any bad =
joints on the top side if necessary. Watch out for pin one on the IC's =
all of the pads are square except pin one. When soldering a row of pins =
your mind will get set to look only at square pads and you will miss the =
round pad one thinking it is a feed through. (at least this has happened =
to me)

 The LCD should have a very high contrast and be easy to read even from =
across the room.=20

Don Brown
KD5NDB

  ----- Original Message -----=20
  From: Bob Miller<mailto:[email protected]>=20
  To: [email protected]<mailto:[email protected]>=20
  Sent: Saturday, April 10, 2004 10:52 AM
  Subject: [Elecraft] K2 4175

  I have been building on my K2 for about a week, off and on, and I'm at =
the point of testing the first part.  Everything seems to be going just =
fine except for the LCD.

  It seems that not all of the segments are displaying right. In the =
normal operating mode, the last two digits, after the decimal point =
don't display entirely. I can move the VFO and the segments that was not =
displaying now displays just fine.  In other modes they work fine, on =
some menu items and not on others. It is hard to explain but I hope you =
understand what I'm trying to say.

  Do you find the LCD hard to read at times?

  Thanks for any suggestions.

  Bob
  WB6KWT

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