To validate Wayne's suggestion . . .
K3 serial numbers 008 and 021 both exhibited this problem within two
years of their 2007 manufacture, and both were cured with the gold-pin
replacement fix.
Neither have exhibited any further misbehavior in the intervening years.
73,
Kent Trimble, K9ZTV
Jefferson City, MO
On 1/20/2014 6:06 PM, Wayne Burdick wrote:
If you put a DMM (voltmeter) on the associated pin, you should see the voltage
changing (a few mV, probably). You can easily get at these pins by taking the
bottom covers (A and B) off the radio. Chances are that the old, non-gold pins
on the front panel module are the cause.
73,
Wayne
N6KR
On Jan 20, 2014, at 7:16 AM, Mike Cox <[email protected]> wrote:
I'd like to see how this is resolved. I note the silence about it after your
post.
My early K3 (sub s/n 500) started doing this same thing intermittently several
months ago. The problem occasionally got bad enough that the rig would cut back
to low power mode and report the PA over temperature. The problem would
manifest itself upon power up after the radio had been off overnight. Usually
within and hour after power-up the PA temperature report would stabilize and
all was well. I pulled the PA board off and did the gold pin replacement but
this did not resolve the issue. A month or so later, the temperature report
stabilized. I have not yet pulled the front panel to change out to gold pins in
that area. As the radio has not exhibited this behavior for the past month, I'm
holding off until I can tell that I've fixed it (or not) when I work on it. I
love repairing intermittant issues (not!). Anyway Paul, your problem is not
unique.
73,
Mike, AB9V
On 1/18/2014 3:41 PM, paulb wrote:
Hi folks
K3 here owned for about 4 years.
Latest firmware.
Last couple of days at power up the PA Temp is unstable.
LCD flicks between 27 and 40 degs C.
TX and RX same reading.
Noticed the rear fans starting and stopping
Reloaded firmware no change.
Before lifting the hood anyone got a pointer what to
check ?
thanks
cheers
Paul b
zl1ajy
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