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Sudden K3 failure

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Sudden K3 failure

Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.

Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.

Thought the filters stopped passing RF.

Rechecked the filter settings on the Utility program and all seemed normal (no change).

What could cause the radio to behave like this? During receive?

Regards,

Mark, K1RX

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Kidder, George

Re: Sudden K3 failure

Always try reloading your backup configuration. Usually works for me.

George, W3HBM

On 7/25/2019 8:24 AM, Mpridesti via Elecraft wrote:

> [This message came from an external source. If suspicious, report to [hidden email]<mailto:[hidden email]>]
>
> Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.
>
> Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.
>
> Thought the filters stopped passing RF.
>
> Rechecked the filter settings on the Utility program and all seemed normal (no change).
>
> What could cause the radio to behave like this? During receive?
>
> Regards,
>
> Mark, K1RX
>
>
> ______________________________________________________________
> 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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Elecraft mailing list

Re: Sudden K3 failure

In reply to this post by Elecraft mailing list

Appreciate all the suggestions

Will address later today and will advise

Regards,

Mark, K1RX

> On Jul 25, 2019, at 8:24 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>
> Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.
>
> Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.
>
> Thought the filters stopped passing RF.
>
> Rechecked the filter settings on the Utility program and all seemed normal (no change).
>
> What could cause the radio to behave like this? During receive?
>
> Regards,
>
> Mark, K1RX
>
>
> ______________________________________________________________
> 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

Re: Sudden K3 failure

Interesting

Powered up radio again and worked fine again. Within minutes failed again so I am suspecting the tmp connectors as suggested by K1XX (and others) and the SYM area.

Regards,

Mark, K1RX

> On Jul 25, 2019, at 9:40 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>
> Appreciate all the suggestions
>
> Will address later today and will advise
>
> Regards,
>
> Mark, K1RX
>
>
>> On Jul 25, 2019, at 8:24 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>
>> Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.
>>
>> Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.
>>
>> Thought the filters stopped passing RF.
>>
>> Rechecked the filter settings on the Utility program and all seemed normal (no change).
>>
>> What could cause the radio to behave like this? During receive?
>>
>> Regards,
>>
>> Mark, K1RX
>>
>>
>> ______________________________________________________________
>> 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
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Don Wilhelm

Re: Sudden K3 failure

Mark,

While you may be correct about the TMP connectors, open the K3 and
rotate the TMP connectors a bit to wipe away any oxidation.

If it continues to fail after that, email [hidden email] for
further ideas on how to proceed. Tell them what you have attempted so far.

73,
Don W3FPR

On 7/25/2019 10:30 AM, Mpridesti via Elecraft wrote:

> Interesting
>
> Powered up radio again and worked fine again. Within minutes failed again so I am suspecting the tmp connectors as suggested by K1XX (and others) and the SYM area.
>
> Regards,
>
> Mark, K1RX
>
>
>> On Jul 25, 2019, at 9:40 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>
>> Appreciate all the suggestions
>>
>> Will address later today and will advise
>>
>> Regards,
>>
>> Mark, K1RX
>>
>>
>>> On Jul 25, 2019, at 8:24 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>>
>>> Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.
>>>
>>> Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.
>>>
>>> Thought the filters stopped passing RF.
>>>
>>> Rechecked the filter settings on the Utility program and all seemed normal (no change).
>>>
>>> What could cause the radio to behave like this? During receive?
>>>
>>> Regards,
>>>
>>> Mark, K1RX
>>>
>>>
>>> ______________________________________________________________
>>> 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
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> Help: http://mailman.qth.net/mmfaq.htm
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>
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>

Nr4c

Re: Sudden K3 failure

I would get some Deoxit and remove the KPA3 from the main board. Apply minimal amount of Deixit to the connector pins and insert/remove the Amp about 10 or 15 times. Wipe pins with lint free tissue and re-apply Deoxit (use toothpick) and insert the amp firmly and reassembled the radio.

Let us know what/when you solve this.

Sent from my iPhone
...nr4c. bill

> On Jul 25, 2019, at 10:42 AM, Don Wilhelm <[hidden email]> wrote:
>
> Mark,
>
> While you may be correct about the TMP connectors, open the K3 and rotate the TMP connectors a bit to wipe away any oxidation.
>
> If it continues to fail after that, email [hidden email] for further ideas on how to proceed. Tell them what you have attempted so far.
>
> 73,
> Don W3FPR
>
>> On 7/25/2019 10:30 AM, Mpridesti via Elecraft wrote:
>> Interesting
>> Powered up radio again and worked fine again. Within minutes failed again so I am suspecting the tmp connectors as suggested by K1XX (and others) and the SYM area.
>> Regards,
>> Mark, K1RX
>>> On Jul 25, 2019, at 9:40 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>>
>>> Appreciate all the suggestions
>>>
>>> Will address later today and will advise
>>>
>>> Regards,
>>>
>>> Mark, K1RX
>>>
>>>
>>>> On Jul 25, 2019, at 8:24 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>>>
>>>> Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.
>>>>
>>>> Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.
>>>>
>>>> Thought the filters stopped passing RF.
>>>>

donovanf

Re: Sudden K3 failure

In reply to this post by Elecraft mailing list

Hi Mark,

You problem sounds exactly like this report:

http://elecraft.365791.n2.nabble.com/K3-No-Receive-No-Transmit-SOLVED-td7609301.html

73
Frank
W3LPL

----- Original Message -----

From: "Mpridesti via Elecraft" <[hidden email]>
To: [hidden email]
Sent: Thursday, July 25, 2019 12:24:17 PM
Subject: [Elecraft] Sudden K3 failure

Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.

Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.

Thought the filters stopped passing RF.

Rechecked the filter settings on the Utility program and all seemed normal (no change).

What could cause the radio to behave like this? During receive?

Regards,

Mark, K1RX

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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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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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Elecraft mailing list

Re: Sudden K3 failure

In reply to this post by Elecraft mailing list

Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.

Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?

Regards,

Mark, K1RX

> On Jul 25, 2019, at 10:30 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>
> Interesting
>
> Powered up radio again and worked fine again. Within minutes failed again so I am suspecting the tmp connectors as suggested by K1XX (and others) and the SYM area.
>
> Regards,
>
> Mark, K1RX
>
>
>> On Jul 25, 2019, at 9:40 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>
>> Appreciate all the suggestions
>>
>> Will address later today and will advise
>>
>> Regards,
>>
>> Mark, K1RX
>>
>>
>>> On Jul 25, 2019, at 8:24 AM, Mpridesti via Elecraft <[hidden email]> wrote:
>>>
>>> Yesterday while just listening to a SSB QSO, the receiver just went quiet and when I tried to transmit, got nothing.
>>>
>>> Power setting was at 75 watts and varied properly but meter and external output monitor was showing nothing.
>>>
>>> Thought the filters stopped passing RF.
>>>
>>> Rechecked the filter settings on the Utility program and all seemed normal (no change).
>>>
>>> What could cause the radio to behave like this? During receive?
>>>
>>> Regards,
>>>
>>> Mark, K1RX
>>>
>>>
>>> ______________________________________________________________
>>> 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]

Dennis Moore

Re: Sudden K3 failure

Any chance you accidentally switched antennas on 40m?

Dennis NJ6G

On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>
> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>
> Regards,
>
> Mark, K1RX
______________________________________________________________
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
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Elecraft mailing list

Re: Sudden K3 failure

Confirmed that at an early stage of the trouble shooting. No difference with either antenna selected (only one port has an antenna).

Regards,

Mark, K1RX

> On Jul 26, 2019, at 7:28 PM, Dennis Moore <[hidden email]> wrote:
>
> Any chance you accidentally switched antennas on 40m?
>
> Dennis NJ6G
>
>> On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
>> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>>
>> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>>
>> Regards,
>>
>> Mark, K1RX
> ______________________________________________________________
> 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

Re: Sudden K3 failure

Sorry- did not fully see the problem

The receiver is not working on any band not just 40. Sounds like band noise on all bands (sounds the same on every band). Did a comparison with a second K3 to confirm the no receiver problem on all bands.

Previously found by rotating some of the tmp connectors on the SYN boards, got the TX problem to go away. So this “no receive” seems unrelated.

Regards,

Mark, K1RX

> On Jul 26, 2019, at 9:57 PM, Barry Simpson <[hidden email]> wrote:
>
> What about RX antenna ?
>
> Barry VK2BJ
>
>> On Sat, 27 Jul 2019 at 09:54, Mpridesti via Elecraft <[hidden email]> wrote:
>> Confirmed that at an early stage of the trouble shooting. No difference with either antenna selected (only one port has an antenna).
>>
>> Regards,
>>
>> Mark, K1RX
>>
>>
>> > On Jul 26, 2019, at 7:28 PM, Dennis Moore <[hidden email]> wrote:
>> >
>> > Any chance you accidentally switched antennas on 40m?
>> >
>> > Dennis NJ6G
>> >
>> >> On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
>> >> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>> >>
>> >> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>> >>
>> >> Regards,
>> >>
>> >> Mark, K1RX
>> > ______________________________________________________________
>> > 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

Re: Sudden K3 failure

Perhaps the RxAnt is selected? Easy to do, easy to miss. Done it more times than I care to remember.

73!
Jack, W6FB

> On Jul 26, 2019, at 7:42 PM, Mpridesti via Elecraft <[hidden email]> wrote:
>
> Sorry- did not fully see the problem
>
> The receiver is not working on any band not just 40. Sounds like band noise on all bands (sounds the same on every band). Did a comparison with a second K3 to confirm the no receiver problem on all bands.
>
> Previously found by rotating some of the tmp connectors on the SYN boards, got the TX problem to go away. So this “no receive” seems unrelated.
>
> Regards,
>
> Mark, K1RX
>
>
>> On Jul 26, 2019, at 9:57 PM, Barry Simpson <[hidden email]> wrote:
>>
>> What about RX antenna ?
>>
>> Barry VK2BJ
>>
>>> On Sat, 27 Jul 2019 at 09:54, Mpridesti via Elecraft <[hidden email]> wrote:
>>> Confirmed that at an early stage of the trouble shooting. No difference with either antenna selected (only one port has an antenna).
>>>
>>> Regards,
>>>
>>> Mark, K1RX
>>>
>>>
>>>> On Jul 26, 2019, at 7:28 PM, Dennis Moore <[hidden email]> wrote:
>>>>
>>>> Any chance you accidentally switched antennas on 40m?
>>>>
>>>> Dennis NJ6G
>>>>
>>>>> On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
>>>>> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>>>>>
>>>>> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>>>>>
>>>>> Regards,
>>>>>
>>>>> Mark, K1RX
>>>> ______________________________________________________________
>>>> 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]

Elecraft mailing list

Re: Sudden K3 failure

Jack

Did check that - nope not the problem

Thanks

Regards,

Mark, K1RX

> On Jul 26, 2019, at 10:54 PM, Jack Brindle <[hidden email]> wrote:
>
> Perhaps the RxAnt is selected? Easy to do, easy to miss. Done it more times than I care to remember.
>
> 73!
> Jack, W6FB
>
>
>> On Jul 26, 2019, at 7:42 PM, Mpridesti via Elecraft <[hidden email]> wrote:
>>
>> Sorry- did not fully see the problem
>>
>> The receiver is not working on any band not just 40. Sounds like band noise on all bands (sounds the same on every band). Did a comparison with a second K3 to confirm the no receiver problem on all bands.
>>
>> Previously found by rotating some of the tmp connectors on the SYN boards, got the TX problem to go away. So this “no receive” seems unrelated.
>>
>> Regards,
>>
>> Mark, K1RX
>>
>>
>>> On Jul 26, 2019, at 9:57 PM, Barry Simpson <[hidden email]> wrote:
>>>
>>> What about RX antenna ?
>>>
>>> Barry VK2BJ
>>>
>>>> On Sat, 27 Jul 2019 at 09:54, Mpridesti via Elecraft <[hidden email]> wrote:
>>>> Confirmed that at an early stage of the trouble shooting. No difference with either antenna selected (only one port has an antenna).
>>>>
>>>> Regards,
>>>>
>>>> Mark, K1RX
>>>>
>>>>
>>>>> On Jul 26, 2019, at 7:28 PM, Dennis Moore <[hidden email]> wrote:
>>>>>
>>>>> Any chance you accidentally switched antennas on 40m?
>>>>>
>>>>> Dennis NJ6G
>>>>>
>>>>>> On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
>>>>>> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>>>>>>
>>>>>> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> Mark, K1RX
>>>>> ______________________________________________________________
>>>>> 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]
>

Elecraft mailing list

Re: Sudden K3 failure

Although I was unable to exactly determine the source of failure, by using the Restore K3 Configuration button and use a previously saved file, brought the receiver back to life- thankfully! Tweaking those tmp connectors helped as well.

Wish I was able to get a better picture on what happened- like so many things in life, sometimes you reboot and move on .....

Thanks for all the helpful suggestions here!

Regards,

Mark, K1RX

> On Jul 27, 2019, at 12:27 AM, Mark Musick <[hidden email]> wrote:
>
> Mark,
> Check to make sure the NR and NB are off.
> Also, open the K3 utility and check the roofing filter settings.
> Does the lack of receiver noise occur regardless of which roofing filter is engaged?
> The narrower filters require additional gain and is set in the K3 utility. Using a narrower roofing filter without adding gain can produce the symptom you describe.
> Does your K3 have the old SYNS or the new SYNS?
> Let us know what you find.
>
> 73,
> Mark, WB9CIF
>
> -----Original Message-----
> From: [hidden email] <[hidden email]> On Behalf Of Mpridesti via Elecraft
> Sent: Saturday, July 27, 2019 02:58
> To: Jack Brindle <[hidden email]>
> Cc: [hidden email]
> Subject: Re: [Elecraft] Sudden K3 failure
>
> Jack
>
> Did check that - nope not the problem
>
> Thanks
>
> Regards,
>
> Mark, K1RX
>
>
>> On Jul 26, 2019, at 10:54 PM, Jack Brindle <[hidden email]> wrote:
>>
>> Perhaps the RxAnt is selected? Easy to do, easy to miss. Done it more times than I care to remember.
>>
>> 73!
>> Jack, W6FB
>>
>>
>>> On Jul 26, 2019, at 7:42 PM, Mpridesti via Elecraft <[hidden email]> wrote:
>>>
>>> Sorry- did not fully see the problem
>>>
>>> The receiver is not working on any band not just 40. Sounds like band noise on all bands (sounds the same on every band). Did a comparison with a second K3 to confirm the no receiver problem on all bands.
>>>
>>> Previously found by rotating some of the tmp connectors on the SYN boards, got the TX problem to go away. So this “no receive” seems unrelated.
>>>
>>> Regards,
>>>
>>> Mark, K1RX
>>>
>>>
>>>> On Jul 26, 2019, at 9:57 PM, Barry Simpson <[hidden email]> wrote:
>>>>
>>>> What about RX antenna ?
>>>>
>>>> Barry VK2BJ
>>>>
>>>>> On Sat, 27 Jul 2019 at 09:54, Mpridesti via Elecraft <[hidden email]> wrote:
>>>>> Confirmed that at an early stage of the trouble shooting. No difference with either antenna selected (only one port has an antenna).
>>>>>
>>>>> Regards,
>>>>>
>>>>> Mark, K1RX
>>>>>
>>>>>
>>>>>> On Jul 26, 2019, at 7:28 PM, Dennis Moore <[hidden email]> wrote:
>>>>>>
>>>>>> Any chance you accidentally switched antennas on 40m?
>>>>>>
>>>>>> Dennis NJ6G
>>>>>>
>>>>>>> On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
>>>>>>> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>>>>>>>
>>>>>>> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>> Mark, K1RX
>>>>>> ______________________________________________________________
>>>>>> 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]
>>
>
> ______________________________________________________________
> 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]

Bob McGraw - K4TAX

Re: Sudden K3 failure

Just shows HOW IMPORTANT keeping a current back-up file becomes. Glad
that resolved the issue.

73

Bob, K4TAX

On 7/27/2019 8:23 AM, Mpridesti via Elecraft wrote:

> Although I was unable to exactly determine the source of failure, by using the Restore K3 Configuration button and use a previously saved file, brought the receiver back to life- thankfully! Tweaking those tmp connectors helped as well.
>
> Wish I was able to get a better picture on what happened- like so many things in life, sometimes you reboot and move on .....
>
> Thanks for all the helpful suggestions here!
>
> Regards,
>
> Mark, K1RX
>
>
>> On Jul 27, 2019, at 12:27 AM, Mark Musick <[hidden email]> wrote:
>>
>> Mark,
>> Check to make sure the NR and NB are off.
>> Also, open the K3 utility and check the roofing filter settings.
>> Does the lack of receiver noise occur regardless of which roofing filter is engaged?
>> The narrower filters require additional gain and is set in the K3 utility. Using a narrower roofing filter without adding gain can produce the symptom you describe.
>> Does your K3 have the old SYNS or the new SYNS?
>> Let us know what you find.
>>
>> 73,
>> Mark, WB9CIF
>>
>> -----Original Message-----
>> From: [hidden email] <[hidden email]> On Behalf Of Mpridesti via Elecraft
>> Sent: Saturday, July 27, 2019 02:58
>> To: Jack Brindle <[hidden email]>
>> Cc: [hidden email]
>> Subject: Re: [Elecraft] Sudden K3 failure
>>
>> Jack
>>
>> Did check that - nope not the problem
>>
>> Thanks
>>
>> Regards,
>>
>> Mark, K1RX
>>
>>
>>> On Jul 26, 2019, at 10:54 PM, Jack Brindle <[hidden email]> wrote:
>>>
>>> Perhaps the RxAnt is selected? Easy to do, easy to miss. Done it more times than I care to remember.
>>>
>>> 73!
>>> Jack, W6FB
>>>
>>>
>>>> On Jul 26, 2019, at 7:42 PM, Mpridesti via Elecraft <[hidden email]> wrote:
>>>>
>>>> Sorry- did not fully see the problem
>>>>
>>>> The receiver is not working on any band not just 40. Sounds like band noise on all bands (sounds the same on every band). Did a comparison with a second K3 to confirm the no receiver problem on all bands.
>>>>
>>>> Previously found by rotating some of the tmp connectors on the SYN boards, got the TX problem to go away. So this “no receive” seems unrelated.
>>>>
>>>> Regards,
>>>>
>>>> Mark, K1RX
>>>>
>>>>
>>>>> On Jul 26, 2019, at 9:57 PM, Barry Simpson <[hidden email]> wrote:
>>>>>
>>>>> What about RX antenna ?
>>>>>
>>>>> Barry VK2BJ
>>>>>
>>>>>> On Sat, 27 Jul 2019 at 09:54, Mpridesti via Elecraft <[hidden email]> wrote:
>>>>>> Confirmed that at an early stage of the trouble shooting. No difference with either antenna selected (only one port has an antenna).
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> Mark, K1RX
>>>>>>
>>>>>>
>>>>>>> On Jul 26, 2019, at 7:28 PM, Dennis Moore <[hidden email]> wrote:
>>>>>>>
>>>>>>> Any chance you accidentally switched antennas on 40m?
>>>>>>>
>>>>>>> Dennis NJ6G
>>>>>>>
>>>>>>>> On 7/26/2019 13:21, Mpridesti via Elecraft wrote:
>>>>>>>> Although I was able get the TX running again by merely doing a small twist to all the TMP connectors that were reachable with top cover removed and behind the front panel, unable to bring back the receiver front end on 40 m. I hear noise and very weak signals but nothing like the normal band noise and a hot receiver previously.
>>>>>>>>
>>>>>>>> Now wondering if another part of the radio (tmp connectors) needs a small twist to break up oxidation. Not clear as to why just one band is affected. Any thoughts from this great resource?
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>>
>>>>>>>> Mark, K1RX
>>>>>>> ______________________________________________________________
>>>>>>> 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]
>> ______________________________________________________________
>> 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
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>
> 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]