[Elecraft] K1/4 problem

[G3TUX Sales]

Anyone come across this one before?

Starting from 20m, I cycled quickly through the bands, returning to 20m
where the RX sensitivity seemed noticeably lower than a few seconds
previously. I
also found that there is no detectable TX RF output on 20m. All other bands,
including 15m seem OK on both TX/RX and, I repeat, it receives on 20 but
(subjectively) with lower gain.

My immediate reaction was that a switching transient zapped something on the
KFL1/4 board. I shall happily embark on fault finding, but being a naturally
idle individual, I just wonder if this is a recognised glitch and if some
kind soul can save me some time?

73 and HNY to all,

Chris     G3TUX

http://www.g3tux.com   for kits, keys, QRP