[Elecraft] K3S display problem...

[Curt Nixon]

Following with interest.  All my older TS2000s suffer this issue also.
Very similar monochrome displays.  Seems the polarizing filter layer in the
display sandwich fades with heat.  There is a tedious process to replace
the filter.
Curt
KU8L

On Fri, Nov 28, 2025, 5:52 PM Geoffrey Way via Elecraft <
elecraft at mailman.qth.net> wrote:

> Greetings,
>
> I've been a K3S (s/n 10305) owner for a good while, and been VERY happy
> with it.
>
> I've finally encountered my first problem, involving the contrast of the
> display.
>
> I've reached a point where Menu items LCD ADJ is at 100, and LCD BRT is
> at 2 in order to be able to show sufficient contrast to comfortably read
> the display. Dialing LCD ADJ to 50 results in a pretty much blank
> display, which was not the case when the rig was new. The rig NEVER gets
> any direct sunlight on its face. There is some VERY subdued ambient
> daylight in the shack, but nothing that should deteriorate a
> light-sensitive surface.
>
> My habit in station layout is to put the rig to my left, which still
> allows readability, but if I am dead-center as I view the display,
> everything is almost invisible at the 100/2 combination. Looking down
> from above and from the left also gives better contrast, but something
> seems to be drifting out of spec., and I'm not sure if others have also
> had this problem already.
>
> I've tried searching through my archive of the reflector, but haven't
> seen any reference to this problem yet. My general habit originally with
> long-term use of the rig was to keep it on continuously, until this
> problem showed up. So now I power off when I'm not using the rig. I'm
> hoping it's just something adjustable that has drifted, and needs a tweak.
>
> I'm handy with a multimeter, if an expert has suggestions of things to
> try checking voltage and resistance-wise.
>
> Let the comments begin...
>
> -KA1IOR
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to radio.ku8l at gmail.com
>