K3 Kit - foam light blockers

[KK6T]

Are the foam pieces supposed to stick down to the second layer of LCD  
or wedged all the way down to the switch substrate?

73 de Terry KK6T
K3 #2965

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[Gary Hinson]

> Are the foam pieces supposed to stick down to the second
> layer of LCD  
> or wedged all the way down to the switch substrate?

I had the same question a couple of weeks back Terry!

Ron told me:

That step of the assembly procedure says it all: "The blockers should be
nearly flush with the front edge of the LCD to block the excess light that
leaks out of each end of the display."   It's no more complicated than that.
Early testing of the K3 showed that enough light leaked out of the ends of
the display that you could see it around the edge of the buttons nearest the
display, especially in dim room light. Wayne added the "blockers" to stop
that small amount of light leakage.

73 GL
Gary  ZL2iFB

PS  There is a neat searchable version of this mailing list at Nabble.com.
Try this search for example:
http://n2.nabble.com/forum/Search.jtp?forum=365791&local=y&query=light+block
er

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[Don Wilhelm-4]

Terry,

The light blockers should ideally stick to the board.  If that is not
possible, they should stick to the switch substrate (as close to the
board as possible.
The purpose is to block the light escaping from the ends of the LCD
assembly, so if you get them into position at the ends of the LCD in any
way that makes them stay there, it is correct, and will provide the
proper function.  Do not push them down too low - the top surface should
be flush with the top of the LCD.

73,
Don W3FPR

[hidden email] wrote:
> Are the foam pieces supposed to stick down to the second layer of LCD  
> or wedged all the way down to the switch substrate?
>
> 73 de Terry KK6T
> K3 #2965
>  
>
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