The problem is caused by the closing contact of the sustain pedal jack socket, which does not provide a short circuit without the pedal being plugged in.
The idea comes from my amateur radio friend Laci.
First of all download service manual from this website and perform a factory reset (page 57).
You can check sustain pedal operation in test program,Test no. 29. (page 39)
Hello!
The problem is caused by the closing contact of the sustain pedal jack socket, which does not provide a short circuit without the pedal being plugged in.
The idea comes from my amateur radio friend Laci.
Best regards,
Tony
1
hello.
https://elektrotanya.com/showresult?what=Yamaha%20P-155&kategoria=&kat2=all
0
First of all download service manual from this website and perform a factory reset (page 57).
You can check sustain pedal operation in test program,Test no. 29. (page 39)
0