[ICOM] ICOM HM-56 Mic. Stuck on Xmit

[KENT HUFFORD]

I have a HM-56 touch tone hand mic. I am trying to get working.

When I turn on the radio, it goes into xmit. 

I've tried the CPU reset by holding the mw and mr buttons, then turning on
the radio.

That does not help.

The mic. button is not pushed. 

Pushing all the buttons does NOT get the red light on the mic ever to
illuminate.

Ideas?

Thanks,
Kent
KQ4KK