Has anyone had an issue with the amp keyline not releasing the amp back to full receive mode? I connect my 991A from the LIN/TUN jack with the proper cable and connect to the key jack on my Alpha 9500 I lose the receive when I put the amp in "operate" mode. As soon as I put the amp in "standby" or unplug the keyline my receive returns. Service manual doesn't show a TX/RX relay but a switching transistor and diode. What a poor design! I love the radio but now it's junk. It works fine without an amp but when you spend thousands on an Alpha I'd like to use it. The radio is fourteen months old so it's out of warranty and I assume it'll take many weeks to get repaired... how pitiful!