In article ,
Wayne.B wrote:

On Thu, 20 Aug 2009 09:39:44 -0800, Bruce in alaska
wrote:

When you hit the Tune Button, on the radio, do you hear the Autotuner
relays clicking as the tuner does it's thing? If Yes, then suspect the
RF Ground. If No, then open the tuner, and see if it is still powered by
the radio +12 Vdc bus.

Sounds like a plan. No, I have not heard the tuner relays recently
which is one of the things that makes me suspect a tuner problem. Is
there a test point for +12 readily available inside the tuner box?

If the +12 is there (or not), what next?

If the +12 Vdc is there and the tuner doesn't tune, then you gots a
tuner problem. I would unhook the Tuner, All the wires, and let it sit
for a minute, then reconnect it, and recycle the Main Power to the
radio, just to be certain that you have reset the Brains in both the
radio and tuner, and then try things again. If things don't start
working you gots yourself a DEAD Tuner, and it will need Icom Service,
most likely..... I suppose one could dig into it, but the thing is
Microprocessor Controlled, and without a Logic Analyzer, it could get
messy really quick.

--
Bruce in alaska
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