RS232 link died

Hi,

My KK seems dead to the RS232.

I changed my KDS to internal volume control to try something, rebooted, internal volume worked.

Now I've changed back and rebooted, but KDS can't find KK, KK not in Konfig. Have rebooted several times, have switched all off from wall, have restored to factory default, nothing.


Until I did another restore and then rebuilt all the settings.