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K3 Apparent PA failure ?

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Martin Sole-3

K3 Apparent PA failure ?

Hi,

My K3 died today, somehow. The radio works fine on receive and appears
to transmit just there is no power indication on my external meter or on
the front panel when pressing TUNE. There is ALC indication but no power
out indication.The only thing I did different was to switch off the
supply before the radio, something I normally never do. Having noted
others having issues with that I reloaded the firmware. Still no output.
Starting to think that somehow the PA is fried or possibly the driver as
there is nothing from the 10 watt PA either. Tried turning the power
down and putting the KPA3 into bypass. Still no power output. Not sure
what else to try before I tear into it. Was going great, worked 3B7A on
3 bands today no problem.

Suggestions appreciated.

Thanks
Martin, HS0ZED

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NK7Z

Re: K3 Apparent PA failure ?

Press and hold the right side of the band-switch over "Test" and make
sure you are not in test mode.

You should see the words:

"TX TEST"

or

"TX NORMAL"

It should say "TX NORMAL".

73s and thanks,
Dave
NK7Z
https://www.nk7z.net

On 04/09/2018 08:31 AM, Martin Sole wrote:

> Hi,
>
> My K3 died today, somehow. The radio works fine on receive and appears
> to transmit just there is no power indication on my external meter or on
> the front panel when pressing TUNE. There is ALC indication but no power
> out indication.The only thing I did different was to switch off the
> supply before the radio, something I normally never do. Having noted
> others having issues with that I reloaded the firmware. Still no output.
> Starting to think that somehow the PA is fried or possibly the driver as
> there is nothing from the 10 watt PA either. Tried turning the power
> down and putting the KPA3 into bypass. Still no power output. Not sure
> what else to try before I tear into it. Was going great, worked 3B7A on
> 3 bands today no problem.
>
> Suggestions appreciated.
>
> Thanks
> Martin, HS0ZED
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Martin Sole-3

Re: K3 Apparent PA failure ?

Not in test mode :(

I get the red TX led bit the display show 0w and - - where the VSWR
display would be when I press TUNE in TX NORM.

Martin, HS0ZED

On 09/04/2018 22:56, Dave Cole (NK7Z) wrote:

> Press and hold the right side of the band-switch over "Test" and make
> sure you are not in test mode.
>
> You should see the words:
>
> "TX TEST"
>
> or
>
> "TX NORMAL"
>
> It should say "TX NORMAL".
>
> 73s and thanks,
> Dave
> NK7Z
> https://www.nk7z.net
>
> On 04/09/2018 08:31 AM, Martin Sole wrote:
>> Hi,
>>
>> My K3 died today, somehow. The radio works fine on receive and
>> appears to transmit just there is no power indication on my external
>> meter or on the front panel when pressing TUNE. There is ALC
>> indication but no power out indication.The only thing I did different
>> was to switch off the supply before the radio, something I normally
>> never do. Having noted others having issues with that I reloaded the
>> firmware. Still no output. Starting to think that somehow the PA is
>> fried or possibly the driver as there is nothing from the 10 watt PA
>> either. Tried turning the power down and putting the KPA3 into
>> bypass. Still no power output. Not sure what else to try before I
>> tear into it. Was going great, worked 3B7A on 3 bands today no problem.
>>
>> Suggestions appreciated.
>>
>> Thanks
>> Martin, HS0ZED
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
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> Post: mailto:[hidden email]
>
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> Message delivered to [hidden email]

Dave Sublette-2

Re: K3 Apparent PA failure ?

Are you in CW mode? If so, is VOX enabled?

K4TO

On Mon, Apr 9, 2018 at 12:20 PM, Martin Sole <[hidden email]> wrote:

> Not in test mode :(
>
> I get the red TX led bit the display show 0w and - - where the VSWR
> display would be when I press TUNE in TX NORM.
>
> Martin, HS0ZED
>
>
>
> On 09/04/2018 22:56, Dave Cole (NK7Z) wrote:
>
>> Press and hold the right side of the band-switch over "Test" and make
>> sure you are not in test mode.
>>
>> You should see the words:
>>
>> "TX TEST"
>>
>> or
>>
>> "TX NORMAL"
>>
>> It should say "TX NORMAL".
>>
>> 73s and thanks,
>> Dave
>> NK7Z
>> https://www.nk7z.net
>>
>> On 04/09/2018 08:31 AM, Martin Sole wrote:
>>
>>> Hi,
>>>
>>> My K3 died today, somehow. The radio works fine on receive and appears
>>> to transmit just there is no power indication on my external meter or on
>>> the front panel when pressing TUNE. There is ALC indication but no power
>>> out indication.The only thing I did different was to switch off the supply
>>> before the radio, something I normally never do. Having noted others having
>>> issues with that I reloaded the firmware. Still no output. Starting to
>>> think that somehow the PA is fried or possibly the driver as there is
>>> nothing from the 10 watt PA either. Tried turning the power down and
>>> putting the KPA3 into bypass. Still no power output. Not sure what else to
>>> try before I tear into it. Was going great, worked 3B7A on 3 bands today no
>>> problem.
>>>
>>> Suggestions appreciated.
>>>
>>> Thanks
>>> Martin, HS0ZED
>>>
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
>
> ______________________________________________________________
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> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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>

Martin Sole-3

Re: K3 Apparent PA failure ?

I’m pressing TUNE. Mode VOX etc shouldn’t matter.

Martin, HS0ZED

Sent from my iPad

> On 9 Apr 2018, at 23:32, Dave Sublette <[hidden email]> wrote:
>
> Are you in CW mode? If so, is VOX enabled?
>
> K4TO
>
>> On Mon, Apr 9, 2018 at 12:20 PM, Martin Sole <[hidden email]> wrote:
>> Not in test mode :(
>>
>> I get the red TX led bit the display show 0w and - - where the VSWR display would be when I press TUNE in TX NORM.
>>
>> Martin, HS0ZED
>>
>>
>>
>>> On 09/04/2018 22:56, Dave Cole (NK7Z) wrote:
>>> Press and hold the right side of the band-switch over "Test" and make sure you are not in test mode.
>>>
>>> You should see the words:
>>>
>>> "TX TEST"
>>>
>>> or
>>>
>>> "TX NORMAL"
>>>
>>> It should say "TX NORMAL".
>>>
>>> 73s and thanks,
>>> Dave
>>> NK7Z
>>> https://www.nk7z.net
>>>
>>>> On 04/09/2018 08:31 AM, Martin Sole wrote:
>>>> Hi,
>>>>
>>>> My K3 died today, somehow. The radio works fine on receive and appears to transmit just there is no power indication on my external meter or on the front panel when pressing TUNE. There is ALC indication but no power out indication.The only thing I did different was to switch off the supply before the radio, something I normally never do. Having noted others having issues with that I reloaded the firmware. Still no output. Starting to think that somehow the PA is fried or possibly the driver as there is nothing from the 10 watt PA either. Tried turning the power down and putting the KPA3 into bypass. Still no power output. Not sure what else to try before I tear into it. Was going great, worked 3B7A on 3 bands today no problem.
>>>>
>>>> Suggestions appreciated.
>>>>
>>>> Thanks
>>>> Martin, HS0ZED
>>>>
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> Message delivered to [hidden email]
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>

Nr4c

Re: K3 Apparent PA failure ?

In reply to this post by NK7Z

In TX TEST mode the “TX” symbol on the right end of the display will flash about once per second. No need to try turning it On to see if it’s on or not.

Sent from my iPhone
...nr4c. bill

> On Apr 9, 2018, at 11:56 AM, Dave Cole (NK7Z) <[hidden email]> wrote:
>
> Press and hold the right side of the band-switch over "Test" and make sure you are not in test mode.
>
> You should see the words:
>
> "TX TEST"
>
> or
>
> "TX NORMAL"
>
> It should say "TX NORMAL".
>
> 73s and thanks,
> Dave
> NK7Z
> https://www.nk7z.net
>
>> On 04/09/2018 08:31 AM, Martin Sole wrote:
>> Hi,
>> My K3 died today, somehow. The radio works fine on receive and appears to transmit just there is no power indication on my external meter or on the front panel when pressing TUNE. There is ALC indication but no power out indication.The only thing I did different was to switch off the supply before the radio, something I normally never do. Having noted others having issues with that I reloaded the firmware. Still no output. Starting to think that somehow the PA is fried or possibly the driver as there is nothing from the 10 watt PA either. Tried turning the power down and putting the KPA3 into bypass. Still no power output. Not sure what else to try before I tear into it. Was going great, worked 3B7A on 3 bands today no problem.
>> Suggestions appreciated.
>> Thanks
>> Martin, HS0ZED
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Brian Hunt

Re: K3 Apparent PA failure ?

In reply to this post by Martin Sole-3

Do you have a saved CONFIG file you can reload? Maybe those data got garbled by the nonstandard shutdown? GL!

Brian, K0DTJ

> On Apr 9, 2018, at 08:31, Martin Sole <[hidden email]> wrote:
>
> Hi,
>
> My K3 died today, somehow. The radio works fine on receive and appears to transmit just there is no power indication on my external meter or on the front panel when pressing TUNE. There is ALC indication but no power out indication.The only thing I did different was to switch off the supply before the radio, something I normally never do. Having noted others having issues with that I reloaded the firmware. Still no output. Starting to think that somehow the PA is fried or possibly the driver as there is nothing from the 10 watt PA either. Tried turning the power down and putting the KPA3 into bypass. Still no power output. Not sure what else to try before I tear into it. Was going great, worked 3B7A on 3 bands today no problem.
>

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tomb18

Re: K3 Apparent PA failure ?

In reply to this post by Dave Sublette-2

Hi,
Is it possible that menu "Tune PWR" is set to 0?
Tom

-----Original Message-----
From: Martin Sole
Sent: Monday, April 9, 2018 12:35 PM
To: [hidden email]
Cc: Elecraft Discussion List
Subject: Re: [Elecraft] K3 Apparent PA failure ?

I’m pressing TUNE. Mode VOX etc shouldn’t matter.

Martin, HS0ZED

Sent from my iPad

> On 9 Apr 2018, at 23:32, Dave Sublette <[hidden email]> wrote:
>
> Are you in CW mode? If so, is VOX enabled?
>
> K4TO
>
>> On Mon, Apr 9, 2018 at 12:20 PM, Martin Sole <[hidden email]> wrote:
>> Not in test mode :(
>>
>> I get the red TX led bit the display show 0w and - - where the VSWR
>> display would be when I press TUNE in TX NORM.
>>
>> Martin, HS0ZED
>>
>>
>>
>>> On 09/04/2018 22:56, Dave Cole (NK7Z) wrote:
>>> Press and hold the right side of the band-switch over "Test" and make
>>> sure you are not in test mode.
>>>
>>> You should see the words:
>>>
>>> "TX TEST"
>>>
>>> or
>>>
>>> "TX NORMAL"
>>>
>>> It should say "TX NORMAL".
>>>
>>> 73s and thanks,
>>> Dave
>>> NK7Z
>>> https://www.nk7z.net
>>>
>>>> On 04/09/2018 08:31 AM, Martin Sole wrote:
>>>> Hi,
>>>>
>>>> My K3 died today, somehow. The radio works fine on receive and appears
>>>> to transmit just there is no power indication on my external meter or
>>>> on the front panel when pressing TUNE. There is ALC indication but no
>>>> power out indication.The only thing I did different was to switch off
>>>> the supply before the radio, something I normally never do. Having
>>>> noted others having issues with that I reloaded the firmware. Still no
>>>> output. Starting to think that somehow the PA is fried or possibly the
>>>> driver as there is nothing from the 10 watt PA either. Tried turning
>>>> the power down and putting the KPA3 into bypass. Still no power output.
>>>> Not sure what else to try before I tear into it. Was going great,
>>>> worked 3B7A on 3 bands today no problem.
>>>>
>>>> Suggestions appreciated.
>>>>
>>>> Thanks
>>>> Martin, HS0ZED
>>>>
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> Message delivered to [hidden email]
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>

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k6mkf

Re: K3 Apparent PA failure ?

I tried that on my K3 and it will me dial it down to 00.1 - then it says 'nor'.

At 00.1 mine shows 00.1 RF out in TUNE.

- 73 and good DX de Mike, K6MKF, Past President - NCDXC

> -----Original Message-----
> From: [hidden email] <[hidden email]>
> On Behalf Of Tom
> Sent: Monday, April 09, 2018 10:26 AM
> To: Martin Sole <[hidden email]>; [hidden email]
> Cc: Elecraft Discussion List <[hidden email]>
> Subject: Re: [Elecraft] K3 Apparent PA failure ?
>
> Hi,
> Is it possible that menu "Tune PWR" is set to 0?
> Tom
>
> -----Original Message-----
> From: Martin Sole
> Sent: Monday, April 9, 2018 12:35 PM
> To: [hidden email]
> Cc: Elecraft Discussion List
> Subject: Re: [Elecraft] K3 Apparent PA failure ?
>
> I’m pressing TUNE. Mode VOX etc shouldn’t matter.
>
> Martin, HS0ZED
>
>
> Sent from my iPad
>
> > On 9 Apr 2018, at 23:32, Dave Sublette <[hidden email]> wrote:
> >
> > Are you in CW mode? If so, is VOX enabled?
> >
> > K4TO
> >
> >> On Mon, Apr 9, 2018 at 12:20 PM, Martin Sole <[hidden email]> wrote:
> >> Not in test mode :(
> >>
> >> I get the red TX led bit the display show 0w and - - where the VSWR
> >> display would be when I press TUNE in TX NORM.
> >>
> >> Martin, HS0ZED
> >>
> >>
> >>
> >>> On 09/04/2018 22:56, Dave Cole (NK7Z) wrote:
> >>> Press and hold the right side of the band-switch over "Test" and
> >>> make sure you are not in test mode.
> >>>
> >>> You should see the words:
> >>>
> >>> "TX TEST"
> >>>
> >>> or
> >>>
> >>> "TX NORMAL"
> >>>
> >>> It should say "TX NORMAL".
> >>>
> >>> 73s and thanks,
> >>> Dave
> >>> NK7Z
> >>> https://www.nk7z.net
> >>>
> >>>> On 04/09/2018 08:31 AM, Martin Sole wrote:
> >>>> Hi,
> >>>>
> >>>> My K3 died today, somehow. The radio works fine on receive and
> >>>> appears to transmit just there is no power indication on my
> >>>> external meter or on the front panel when pressing TUNE. There is
> >>>> ALC indication but no power out indication.The only thing I did
> >>>> different was to switch off the supply before the radio, something
> >>>> I normally never do. Having noted others having issues with that I
> >>>> reloaded the firmware. Still no output. Starting to think that
> >>>> somehow the PA is fried or possibly the driver as there is nothing
> >>>> from the 10 watt PA either. Tried turning the power down and putting the
> KPA3 into bypass. Still no power output.
> >>>> Not sure what else to try before I tear into it. Was going great,
> >>>> worked 3B7A on 3 bands today no problem.
> >>>>
> >>>> Suggestions appreciated.
> >>>>
> >>>> Thanks
> >>>> Martin, HS0ZED
> >>>>
> >>>>
> ______________________________________________________________
> >>>> Elecraft mailing list
> >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >>>> Help: http://mailman.qth.net/mmfaq.htm
> >>>> Post: mailto:[hidden email]
> >>>>
> >>>> This list hosted by: http://www.qsl.net Please help support this
> >>>> email list: http://www.qsl.net/donate.html Message delivered to
> >>>> [hidden email]
> >>> ______________________________________________________________
> >>> Elecraft mailing list
> >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >>> Help: http://mailman.qth.net/mmfaq.htm
> >>> Post: mailto:[hidden email]
> >>>
> >>> This list hosted by: http://www.qsl.net Please help support this
> >>> email list: http://www.qsl.net/donate.html Message delivered to
> >>> [hidden email]
> >>
> >> ______________________________________________________________
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:[hidden email]
> >>
> >> This list hosted by: http://www.qsl.net Please help support this
> >> email list: http://www.qsl.net/donate.html Message delivered to
> >> [hidden email]
> >
> ______________________________________________________________
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>
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> Please help support this email list: http://www.qsl.net/donate.html Message
> delivered to [hidden email]
>
>
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Vic Rosenthal

Re: K3 Apparent PA failure ?

In reply to this post by Brian Hunt

That's what I would try next.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/

Vic

On 9 Apr 2018 20:18, Brian Hunt wrote:

> Do you have a saved CONFIG file you can reload? Maybe those data got
> garbled by the nonstandard shutdown? GL!
>
> Brian, K0DTJ
>
>
>
>> On Apr 9, 2018, at 08:31, Martin Sole <[hidden email]> wrote:
>>
>> Hi,
>>
>> My K3 died today, somehow. The radio works fine on receive and
>> appears to transmit just there is no power indication on my
>> external meter or on the front panel when pressing TUNE. There is
>> ALC indication but no power out indication.The only thing I did
>> different was to switch off the supply before the radio, something
>> I normally never do. Having noted others having issues with that I
>> reloaded the firmware. Still no output. Starting to think that
>> somehow the PA is fried or possibly the driver as there is nothing
>> from the 10 watt PA either. Tried turning the power down and
>> putting the KPA3 into bypass. Still no power output. Not sure what
>> else to try before I tear into it. Was going great, worked 3B7A on
>> 3 bands today no problem.

Martin Sole-3

Re: K3 Apparent PA failure ?

In reply to this post by NK7Z

Hi,

Well I've been through all of the operational settings. CONFIG : TUN PWR
is set to NOR and I can vary the power with the power control but the
output meter display stays at 0.0 and the VSWR displays only - - . I had
a settings save from about a month ago but uploading that hasn't changed
anything.

Since this affects both the 100 watt PA and the LPA I'm guessing the 100
watt PA is probably good and that the failure must be earlier on.

My next test is to look at the XVTR output as I see that is taken off
before both amplifiers to see if there is anything there.

Martin, HS0ZED

>> Hi,
>>
>> My K3 died today, somehow. The radio works fine on receive and
>> appears to transmit just there is no power indication on my external
>> meter or on the front panel when pressing TUNE. There is ALC
>> indication but no power out indication.The only thing I did different
>> was to switch off the supply before the radio, something I normally
>> never do. Having noted others having issues with that I reloaded the
>> firmware. Still no output. Starting to think that somehow the PA is
>> fried or possibly the driver as there is nothing from the 10 watt PA
>> either. Tried turning the power down and putting the KPA3 into
>> bypass. Still no power output. Not sure what else to try before I
>> tear into it. Was going great, worked 3B7A on 3 bands today no problem.
>>
>> Suggestions appreciated.
>>
>> Thanks
>> Martin, HS0ZED
>>
>> ______________________________________________________________
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> ______________________________________________________________
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Martin Sole-3

Re: K3 Apparent PA failure ?

Hi,

I see about 1.17A in receive and only 1.8A in TX TUNE mode with the the
PWR control set at 110W.

Martin, HS0ZED

On 10/04/2018 07:38, Al Lorona wrote:

> Martin,
>
> Does the K3 draw any current from the power supply when you go into
> TUNE? If so, then maybe the power meter is bad.
>
> If not, then there is something wrong in the DC power to the amplifier
> stages.
>
> Al W6LX
>
>
> ------------------------------------------------------------------------
> *From:* Martin Sole <[hidden email]>
> *To:* [hidden email]
> *Sent:* Monday, April 9, 2018 5:36 PM
> *Subject:* Re: [Elecraft] K3 Apparent PA failure ?
>
> Hi,
>
> Well I've been through all of the operational settings. CONFIG : TUN PWR
> is set to NOR and I can vary the power with the power control but the
> output meter display stays at 0.0 and the VSWR displays only - - . I had
> a settings save from about a month ago but uploading that hasn't changed
> anything.
>
> Since this affects both the 100 watt PA and the LPA I'm guessing the 100
> watt PA is probably good and that the failure must be earlier on.
>
> My next test is to look at the XVTR output as I see that is taken off
> before both amplifiers to see if there is anything there.
>
> Martin, HS0ZED
>
>
> >> Hi,
> >>
> >> My K3 died today, somehow. The radio works fine on receive and
> >> appears to transmit just there is no power indication on my external
> >> meter or on the front panel when pressing TUNE. There is ALC
> >> indication but no power out indication.The only thing I did different
> >> was to switch off the supply before the radio, something I normally
> >> never do. Having noted others having issues with that I reloaded the
> >> firmware. Still no output. Starting to think that somehow the PA is
> >> fried or possibly the driver as there is nothing from the 10 watt PA
> >> either. Tried turning the power down and putting the KPA3 into
> >> bypass. Still no power output. Not sure what else to try before I
> >> tear into it. Was going great, worked 3B7A on 3 bands today no problem.
> >>
> >> Suggestions appreciated.
> >>
> >> Thanks
> >> Martin, HS0ZED
> >>
> >> ______________________________________________________________
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:[hidden email] <mailto:[hidden email]>
> >>
> >> This list hosted by: http://www.qsl.net <http://www.qsl.net/>
> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to [hidden email] <mailto:[hidden email]>
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email] <mailto:[hidden email]>
> >
> > This list hosted by: http://www.qsl.net <http://www.qsl.net/>
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to [hidden email] <mailto:[hidden email]>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <mailto:[hidden email]>
>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email] <mailto:[hidden email]>
>
>