I do believe many of our friends here have one KX1 or know them well.
My rig is abt 1.5 year old and I already suffered a problem with the relay K1 on the filter module LPF1. The capacitor C44 on main board that isolate +12 on the PA transistor from filter unit and the antenna. This had shorted out and I believe was reason for the faulty relay K1.
Since I already was disappointed by bad RX sensitivity on 30m transformer T2 on main board and L1 and L2 on LPF1 was re-wound.
The PA transistor was also changed so no problem would occur later.
The Relay was suplied by www.ELFA.se and capasitor changed to a surplus type with higher voltage.
KX1 displayed a E in display and my 3,5 and 10Mhz unit was not accessible.
The antenna tuning unit did not work. At my aging stage (soon 45y) I believe glasses are mandatory in the rucksack.Could not read the super mini print on my portable programming chart. I called up LA1ENA Aage and he read the instruction for restarting and enrolling the faulty units. Thanks Aage. Soon back on air. Power out some 1w and battery 10.6volt.
The rig has been out in all weather but yesterday it get real wet in Sweden on SM/VD-003. Has any of you tried to spray entire boards with coating clear plastic. ( Sorry to all for my relative bad English. )
72/73 de Kjell LA1KHA