[Elecraft] Help: Problem with LCD Display on k2
Tom Hammond NØSS
[email protected]
Mon Jan 13 11:39:01 2003
James:
Almost guaranteed - A poorly-soldered connection to one of the LCD display
pins. They can be a bit 'touchy' to solder since they don't stick
completely through the PC board. Sometimes, if you don't heat the entire
plated-thru hole, the solder will remain only on top of the pad, and not be
drawn into the hole by capillary action.
I'd suggest you re-flow any questionable joints from the LCD. If necessary,
add just a tiny bit more solder to each connection and then allow the tip
of the iron to dwell a bit longer on the joint, to give the solder a chance
to completely melt and flow into the hole.
Good luck,
Tom Hammond N0SS
At 12:15 AM 1/13/03, you wrote:
>I was working through part two of the adjustments for the Elecraft K2
>when I noticed that the on the LCD the second row of horizontal dashes
>are significantly dimmer than the rest of the board. Thinking it was
>because the Rig was cold I blew on it and the dashes became brighter.
>Then after a few minutes they became duller again. Any ideas? I was
>thinking about checking for continuity on the LCD. But, I wasn't sure
>where to start.