[Elecraft] r5 and r4 on kpa3 board?

[Jim Rhodes]

I had that happen to one of those resistors and the 40 meter coil in the
BPF circuit was basically vaporized. They sent me out the parts to upgrade
the resistors and a new toroid coil all for a very reasonable price. I
replaced the parts and was back in business. They refer to that behavior of
the surface mount resistors as "tombstoning" they over heat and one end
comes loose first and the other end pulls it up in the air. Kind of cute.

On Thu, Jun 16, 2022, 12:03 NE9U - Scott Jasper <skjasper at att.net> wrote:

> i sent a message to list a while back about my k3 not putting out any
> power over 12 watts.....its still not...I'm on the LONG LONG queue for
> sending in....(seems they need more repair techs)
>
> we took most of the boards out, reseated them etc.....no change.
>
> i did notice one thing that appears weird and must have been done by
> elecraft repair on a previous trip for k3s board and other updates..
>
> R4 and R5 on kpa3 board are unsoldered on one end and flipped
> around....effectively taking them out of circuit.
>
> does anyone know the purpose of this being done?
>
> Scott NE9U
>
>
>
>
> --
> Scott- NE9U
>
> Sent from my Cray-1
>
> skjasper73 at gmail.com
> skjasper at att.net
> ne9u at arrl.net
>
>
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