[Elecraft] K3 intermittent receive issue

[Don Wilhelm]

One easy thing that can be done quickly - give each of the TMP 
connectors a slight turn - use long nose pliers (fingers are not small 
enough in crowded areas).

If it fixes the problem, great.  Otherwise, continue with the other 
troubleshooting steps indicated by others.

73,
Don W3FPR

On 4/21/2014 1:11 PM, Bill W2BLC wrote:
> Sounds like a mechanical issue to me. That would mean a loose 
> connector, loose wire inside of a connector, or a cold solder joint.
>
> To start trouble shooting, you will need:
>
> 1. A small non-conductive probe - part of an old pen case will do well 
> as will a plastic cable tie. Lightly tap each connector with the probe 
> and lightly pull/push on the wires going to the connectors.
>
> 2. A can of "Freeze" to selectively spray soldered connections. Fast 
> cooling will often cause a failure if said connection is faulty.
>
> Both of the above tests will cause the problem to appear and/or 
> correct. Gently is the operative word of the day.
>
> In most instances, these methods will find the offending part(s). 
> Again, DO NOT use force when pulling/pushing connectors or wires. What 
> you have is slight - else tapping the case would have no effect.
>