[Elecraft] K3S IF signals seen in P3 and NaP3 but nothing heard

[Bob McGraw K4TAX]

These cables, like many cables with connectors will accrue connector 
oxidation.  Often the oxidation is such that it prevents a very low 
level signal from passing.   The solution for many instances is simply 
to clean connectors.

My approach is to use a Q-Tip, apply your favorite contact cleaner to 
the Q-Tip, unplug one connector at a time, and scrub the male pins.  
Then exercise the connector in and out of the jack or plug to wipe the 
female socket.   Then move on to another connector, doing the same.

And for gosh sake, NEVER NEVER spray anything into the radio, a socket 
or a connector.  You'll regret ever doing that for a long long time.

73

Bob, K4TAX



On 7/10/2019 12:14 PM, Grant Youngman wrote:
> i have never had a problem with TMP cables themselves.  They’ve been in and out of my K3 many times doing upgrades, etc.  I HAVE had a problem with my own careless installation.
>
> In some socket locations you have to be careful.  You can’t just jam the plug in the socket when you feel resistance.  On a few of the sockets (not all), if the cable enter pin is slightly misaligned and you keep pushing, you will end up displacing the tip end of the socket.  Can’t say that’s what happened here, but appropriate care can put off a lot of head scratching and diagnosis time later.
>
> Hard lessons learned the hard way ..
>
> Grant NQ5T
> K3 #2091 KX3 #8342
>
>> On Jul 10, 2019, at 12:25 PM, Tom Doligalski via Elecraft <elecraft at mailman.qth.net> wrote:
>>
>> I have had similar problems with the TMP cables. Was tempted to just replace all of them, but everything seems to be working great now!
>>
>> Tom W4KX
>>
>> Sent from my iPad
>>
>>> On Jul 9, 2019, at 8:36 PM, Brian <brianpepperdine at sympatico.ca> wrote:
>>>
>>> Anyhow, earlier today (a month later ? )  the same thing happened. So before pulling the receiver board and re-setting it in the pin socket (hoping for a better connection) I looked at the other hardware connection there.. the two TMP plugs/sockets. So I took the two cables out with the TMP plugs on them and reset them twice.
>>> Behold, signals heard.
>>>
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