I have had partial success modifying a small all-in-one hifi without aux-in (a Panasonic SA-PM21) to support a Bluetooth receiver. It is successfully playing Bluetooth audio, but only when I have a CD inserted and press "Play".
Clearly there is circuitry in place that kills amplification until the door is closed and "Play" has been hit, but I need help bypassing that logic because the CD player mechanism is loud, and it seems very silly. I have been doing a lot of reading, but am very inexperienced.
In the attached extract from the schematic you can see the "CN801" pins that come from the CD part of the system. I have successfully wired the Bluetooth component L, R and GND pins to CM801 pins 17, 15, and 16 for the audio, but now I suppose I need to do something with "LD_SW" and "REST_SW" and "CD OPEN SW", but what?
As an aside, I also don't understand why everything from CN801 connects to one black line down the right of the page.
Thanks for listening. I have had great fun with this project, but am a little stumped.
Clearly there is circuitry in place that kills amplification until the door is closed and "Play" has been hit, but I need help bypassing that logic because the CD player mechanism is loud, and it seems very silly. I have been doing a lot of reading, but am very inexperienced.
In the attached extract from the schematic you can see the "CN801" pins that come from the CD part of the system. I have successfully wired the Bluetooth component L, R and GND pins to CM801 pins 17, 15, and 16 for the audio, but now I suppose I need to do something with "LD_SW" and "REST_SW" and "CD OPEN SW", but what?
As an aside, I also don't understand why everything from CN801 connects to one black line down the right of the page.
Thanks for listening. I have had great fun with this project, but am a little stumped.
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