I seem to have fixed the problem - the K2 ran for 11 hours yesterday
without a hiccup. I've got it running on the downstairs workbench this
morning and, if nothing is amiss, I'll button it up tomorrow morning.
Here's what I did, sorta in the right order:
1) Snipped the protruding wires on the
Jerry,
Yes I see the photo.
Although it looks like the copper is intact, I would scrape away a bit
of the silkscreen on each end of the damaged area and then solder a
small gauge wire across the damage. If you have some #24 wire (from
ethernet cable for instance) use that rather then the
Geeze, spent yesterday looking things over. Put a piece of paper
between the encoder and the control board. Thought I'd just put the
rig through its paces this morning and observe
1) Well to start, the display flipped to the "side-tone level" after a
short time and a little later the encoder
Had similar flaky symptoms on my 23 year old K2. After careful visual
inspection it turned out to be a broken solder connection on the tuning
encoder. Wire barely broken off the encoder pin. Took 23 years to break!
--Lenny W2BVH
On 10/15/2022 5:36 PM, Don Wilhelm wrote:
Jerry,
That does
Jerry,
That does sound like it might be a bad solder connection.
Try resoldering Front Panel RP1 and U2. Those components are critical
to decoding the switch matrix.
You might also try reseating Control Board U6 - but do so in a static
controlled manner.
With that 7xxx serial number, you
from KI4io - Jerry Wolczanski
My K2 started exhibiting this problem in June and it's gotten worse.
The LCD toggles rapidly between the frequency and the last menu used.
A tap on the menu switch restores the display to normal. It was quite
infrequent to start, but now it's bothersome, happening
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