Hi , I have a Marantz Tuner, a Teac Cassette and CD player and a TEAC AR650 Amp. All are wired correctly, however, on the TUNER there is a power button and below that is a standby/on button which has a red LED. On the Amp the standby button when pressed to turnoff is toggling automatically back on....? Again the standby button is always on even when turned off. I cannot turn it OFF, which means not Tuner audio? Any ideas? All good advice welcome, Marantztuner