Try issuing a few commands as well.. You can hear them as well.. Years ago I sent a Tiu & remote in for repair. It had taken a hit of high voltage and nothing worked. On return the remote could find the tiu (read) but no dcs signal anywhere. I knew right away that there was no dcs signal anywhere on any channel with the radio test. MTH replaced the tiu free of charge even though it was my stupidly that fried the thing.
|