[Elecraft] KAT500 Locking up and not tuning

[goldtr8 at charter.net]

Dear All

I am getting a strange happening that my KAT500 does not want to tune on 
an intermittent basis.

It gives me a high SWR and just hangs with the auto light blinking.   I 
wind up turning it on and off multiple times and then suddenly it works 
again.   I will happen randomly on any of the three antenna inputs.  It 
will however tune on the other antenna inputs.

I am running the current version of software.

Not sure how to describe it better but it makes no difference if I try 
and force a tune from the software or front buttons or it tries to auto 
tune.

Thanks in advance for any ideas on what to look for.

~73
Don
KD8NNU
FH#4107
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