Hi Knut,
Mine is one of the early models (#257), purchased not long after they
became available and it's never gone home before (kit version).
There are two jumpers on the the top of the board (#12 wire?) that
cross(ed) each other and arced, causing damage. Now one of the wires is
running under the board so there can be no physical contact. My take
was that this issue had happened before, now it can't, I didn't ask.
I wasn't given details but some resistors have been swapped and similar
changes but it wasn't explained in detail on the phone.
As with other Elecraft products, some changes happen throughout the life
of the product, so yours may already have the updates.
Mine will return being updated to current specs and mods (plus the PC
traces repaired, spatter from the jumpers arcing burned the board and
some trace). Once the arcing started, the tuner couldn't take >300
watts, so barefoot won't be an issue.
The internal K3 tuner works well too, a consideration until you go QRO.
73,
Rick nhc
On 7/20/2018 8:18 AM, ab2tc wrote:
Hi Rick,
I am curious as to what mods you had performed:
"It is repaired, UPDATED with all current mods (including moving the wires
that
arced to a different configuration) and is undergoing rigorous testing."
I am running barefoot so arcing is not likely and I do not have any
immediate plans to get an amp, but I wasn't aware there were any mods done
to it.
AB2TC - Knut
Rick WA6NHC-2 wrote
My KAT500 had an arc between two jumpers atop the PC board, in the
middle of the KH1 DXpedition rendering it inoperable. I had to switch to
a manual tuner and switching arrangement (ugh!) while I sent it to
Elecraft.
Some of the damage was a burned PC board and traces as well as the two
jumper cables.
I received a phone call this morning from the tech working on it. It is
repaired, UPDATED with all current mods (including moving the wires that
arced to a different configuration) and is undergoing rigorous testing.
It will be shipped in a couple days.
Total bill to me: ONE hour of shop time. Faced with possible
replacement, this price alone is well worth it but when you add that
it's been updated, priceless.
I have to retrain it to the antennas; no problem, I saved the
configuration and expected this to happen. I'll run through retraining
anyway.
I tell most folks that if they do me right; I'll sing your praises to
high heaven. Do me wrong and I'll make sure there is NO place you can
hide.
Elecraft: Once again, you've done good. Thank you. THIS is the
business model to follow.
Rick WA6NHC
<snip>
--
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