[Elecraft] K2 LCD Backlight Diffuser

[barry halterman]

I too am building a K2, sn 7954. They are using a LED bar for the back
light with a spacer instead of the cut off pcb material. The diffuser ends
have cutouts that sit on the LED bars. Wonder where Elecraft found these
gems....
Barry

On Sun, Jul 12, 2020, 1:23 PM Don Wilhelm <donwilh at embarqmail.com> wrote:

> Murray,
>
> Those diffuser leads should just touch the top of the board since 2
> spacers are 1/8 inch and the leads are also 1/8 inch.  Solder them from
> the top of the board - being careful so the iron does not touch anything
> but the leads and the solder pads.
>
> If the leads do not touch the solder pads, sand down a spacer so that it
> does just touch.  If there are rough spots on the spacers, sand them off.
>
> 73,
> Don W3FPR
>
> On 7/12/2020 1:02 PM, zk2boy wrote:
> > I am just getting around to building my K2 that I purchased in 2008.
> > I've been busy. But I'm having fun now!
> >
> > I have  the K2 Owner's Manual Revision G, May 29, 2007. I also have
> > Errata sheet Rev. G-1, Dec. 12, 2007.
> >
> > In the Front Panel section, page 27, the original instruction advises to
> > use two spacers at each end when installing the LCD backlight diffuser
> > to keep the diffuser exactly 1/8" above the PC board. The Errata sheet
> > clarifies to use the spacers but remove them after soldering the
> > diffuser into place.
> >
> > The issue is that the two spacers are 1/8" thick. The diffuser leads are
> > exactly 1/8" long. This means with the spacers in place, the diffuser
> > leads don't actually reach the solder holes. The lead ends are suspended
> > just above the holes. If I actually manage to line everything up and use
> > rubber bands to hold all in place while I solder (good luck!), the
> > solder would need to bridge up to the ends of the diffuser leads for the
> > soldered connections to hold. This doesn't seem like a good practice.
> >
> > Is there a newer errata sheet? Or am I not understanding this correctly?
> >
> > Murray
> > VA1CQ
> >
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