[Elecraft] Sudden K3 failure

[Mpridesti]

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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>>>>> 
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> 
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