VK I wonder? I really don’t want
>>> to have to ship it back to Elecraft for this.
>>>
>>>
>>>
>>> Regards,
>>>
>>> Grant VK5GR
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
*Subject:* Re: [Elecraft] KPA500 fan won't shut off
Reload the firmware.
73 Eric WD6DBM
On Mon, Nov 25, 2019, 6:51 PM VK5GR wrote:
FAN CTL = NOR
FANs are idle while the amp is turned on - amp ambient temp was 27C at the
time (it was powered up and had been idle for about 20 minutes).
I
"Ok, I'll bite. How would a mechanically stuck relay be freed by cycling
power? "
Never mind. I should have checked my notes first. Stuck K1 in the PSU would
seem to fit the symptoms.
Andy, k3wyc
__
Elecraft mailing list
Home:
"As Jack Brindle noted (and he would know), it appears to be a stuck relay."
Ok, I'll bite. How would a mechanically stuck relay be freed by cycling power?
Andy, k3wyc
__
Elecraft mailing list
Home:
;
>
>
>
>
>
>
>
>
> *From:* Eric Norris [mailto:norrislawfi...@gmail.com]
> *Sent:* Tuesday, 26 November 2019 2:20 PM
> *To:* VK5GR
> *Cc:* elecraft@mailman qth. net
> *Subject:* Re: [Elecraft] KPA500 fan won't shut off
>
>
>
> Reload the firmware.
>
&g
qth. net
Subject: Re: [Elecraft] KPA500 fan won't shut off
Reload the firmware.
73 Eric WD6DBM
On Mon, Nov 25, 2019, 6:51 PM VK5GR wrote:
FAN CTL = NOR
FANs are idle while the amp is turned on - amp ambient temp was 27C at the
time (it was powered up and had been idle for about 20 minutes
That won’t do any good. The main firmware has shut down at that point. The fan
is running because the relay is stuck, which is not something that firmware can
fix.
Call tech support.
73!
Jack, W6FB
> On Nov 25, 2019, at 7:49 PM, Eric Norris wrote:
>
> Reload the firmware.
>
> 73 Eric
Reload the firmware.
73 Eric WD6DBM
On Mon, Nov 25, 2019, 6:51 PM VK5GR wrote:
> FAN CTL = NOR
>
> FANs are idle while the amp is turned on - amp ambient temp was 27C at the
> time (it was powered up and had been idle for about 20 minutes).
>
> I then turned the amplifier off via the front
Does the mains switch on the rear panel shut the fan off?
I would next reload the firmware.
Bob, K4TAX
Sent from my iPhone
> On Nov 25, 2019, at 8:50 PM, VK5GR wrote:
>
> FAN CTL = NOR
>
> FANs are idle while the amp is turned on - amp ambient temp was 27C at the
> time (it was powered
FAN CTL = NOR
FANs are idle while the amp is turned on - amp ambient temp was 27C at the
time (it was powered up and had been idle for about 20 minutes).
I then turned the amplifier off via the front panel push button. I would
have expected the FANs to start up for about 10 seconds as they
What is the value in the menu for FAN CTL? If at NOR then the fan
should be off until the temp hits about 50º C. It will then increment
up one speed value about every 5 degrees temp increase. What is the
TEMP value showing? Should be about room temp or 22 to 25 C
73
Bob, K4TAX
On
Folks,
Has there been any further word on this fault? I have just had the same
thing happen to me and am wondering if it could be the same issue?
Regards,
Grant VK5GR
--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft
"It then sets the fan for full speed operation to bleed off the 60 V power and
waits for the power button to be released."
I don't think fan is set to high speed to bleed down the 60 V supply. I think
it is set to low speed but may revert to high speed when the firmware shuts
down with 60 V
Dinner on Andy?
Your analysis is spot on. When the KPA is requested to shut down it does some
housekeeping, saving various things and putting the amp into a safe condition,
including setting the 60V to off. It then sets the fan for full speed operation
to bleed off the 60V power and waits for
"the KPA500 fan was still running at a high speed even though the amp had been
turned off all night by using the front "on" button. The only way the fan
stops running is if I turn the amp on with the front switch or if I shut the
amp off by using the rear on/off switch. Menu setting for Fan is
Cool. I saw "turned off all night" and it surprised me the fan was left
running full speed the whole night.
I'm interested in the outcome.
Kev
On Sun, Jul 14, 2019, 3:13 PM David Bunte wrote:
> Kevin -
>
> As I read Jerry's post, I believe his fan was running even after the amp
> had been
Kevin -
As I read Jerry's post, I believe his fan was running even after the amp
had been shut off all night long... and the only way to get it to stop
running at full speed was to either turn the amp on... or turn off the
power switch on the rear. He also stated that the menu setting was set to
ginal Message-
> From: elecraft-boun...@mailman.qth.net On
> Behalf Of jerry
> Sent: Sunday, July 14, 2019 1:23 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] KPA500 fan won't shut off
>
> After yesterdays contest, I noticed this morning that the KPA500 fan was
> s
Jerry:
Maybe clarify. I think Jack's concern is that your fan was running even
with the power off. That's not the case, right? The fan just came back on
full when you turned the power back on?
Try Menu, scroll down to FAN CTL and make sure that say NOR. If it has a
number instead, you somehow
That means the power is not shutting off. We bleed off the capacitor charge
through the fan at front panel shutdown, which is why you hear the fan run for
normally a short time.
Turn off the KPA using the rear pane switch and call tech support in the
morning. They need to look into this one.
.net On
Behalf Of jerry
Sent: Sunday, July 14, 2019 1:23 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KPA500 fan won't shut off
After yesterdays contest, I noticed this morning that the KPA500 fan was still
running at a high speed even though the amp had been turned off all night by
u
After yesterdays contest, I noticed this morning that the KPA500 fan was
still running at a high speed even though the amp had been turned off
all night by using the front "on" button. The only way the fan stops
running is if I turn the amp on with the front switch or if I shut the
amp off by
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