I just purchased an old Marantz CD-67 MKII SE, and when I opened to check the state of the internals, I found a custom circuit that seems to connect to the frontal panel buttons. What I presume is/was its power source cable has been cut.
The CD player works perfectly otherwise, but I’m curious about that hack. See photos attached.
The CD player works perfectly otherwise, but I’m curious about that hack. See photos attached.
Attachments
It was most likely a cabled remote control as the board had 4 relays on connecting to the controls related to playing CDs. Maybe used it as an alarm clock?
That makes sense. I also thought maybe a remote control of some kind...still weird since this player has a remote control. The alarm clock scenario seems much more feasible. Thanks!
Relay contacts are most probably just in parallel with front panel buttons.
Shortest simplest path solution.
What activates the relay coils?
Shortest simplest path solution.
What activates the relay coils?
Quite. I did wonder about some home automation setup, but you'd still need to turn it on and off. And for a bar or restaurant you'd want a changer.
That is the bit that was cut off so we don't know!
