Starting with my first qso after loading Beta 2.10 last week my K3 shut down
(turned off) unexpectedly in the middle of an SSB qso while I was
transmitting at about 60 watts PEP out. Later I was able, after several
failed attempts, to turn it on again and now, a few days later, it is
happening again. Now, though, it looks like a hard failure. Any attempt to
transmit at over about 30 watts out results in shutdown. This occurs on
both 160 and 80 meters. I have not tried other bands.
The symptoms are that indicated peak output power is is about three times
the specified amount. At around 40 watts commanded actual power is up to
over 120 watts and that is about the level where shutdown occurs. As I
write this the K3 is in CW mode on 80 meters connected to a 50 ohm dummy
load. The output power is set to 30 watts and when I press the TUNE button
actual output power indicated by an external meter (average, not peak mode)
shows a power of 30 watts varying 1 or 2 watts plus and minus. When switched
to peak mode the external wattmeter indicates 70 watts. The input current
is varying from 6 to 13 amps as indicated on the K3 digital display, and the
SWR indication on the display is flashing 1.0 - 1 on and off at an uneven
rate and the RF output indication on the K3 display is 70 watts but also
flashing and jittering.
This started with FW beta 2.10 and I hope that is the problem but I'm
worried that it might be something more serious.
I have made no changes to settings recently.
HELP!
Don K7FJ
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