[Elecraft] Sudden K3 failure

[Mpridesti]

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 <elecraft at mailman.qth.net> 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 <elecraft at mailman.qth.net> 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 <elecraft at mailman.qth.net> 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
>>> 
>>> 
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