[Elecraft] Sudden K3 failure

[Bob McGraw K4TAX]

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 <markmusick at outlook.com> 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: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Mpridesti via Elecraft
>> Sent: Saturday, July 27, 2019 02:58
>> To: Jack Brindle <jackbrindle at me.com>
>> Cc: Elecraft at mailman.qth.net
>> 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 <jackbrindle at me.com> 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 <elecraft at mailman.qth.net> 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 <vk2bj at optusnet.com.au> wrote:
>>>>>
>>>>> What about RX antenna ?
>>>>>
>>>>> Barry  VK2BJ
>>>>>
>>>>>> On Sat, 27 Jul 2019 at 09:54, Mpridesti via Elecraft <elecraft at mailman.qth.net> 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 <dennis at mail4life.net> 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
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