i tested the signals of my good old Technics SX P50 piano with the Midi-OX software. Most keys send the right ON/OFF signals, but 16 of 88 keys send no OFF-signal when I release a keay. Insteat they send a second ON signal. What i can do to fix this issue?
- might be dust the problem? -> Opening the piano and cleaning everything carefully.
- might be the cheap midi interface the problem? -> buy another one
- can this repaired at all?
Thank you for your help.
1st. Thank you for the replies and yes, i got a second on signal with velocity zero. Fortunately the piano from the 90's is not broken, so no repair or cleaning necessary. I bought another more expensive Midi-Interface (Roland UM-ONE mk2) and with this one, every signal was as it should be. No problems at all.
One of the sellers mentioned, that in the 90's there were a non-standard midi (format) used by Roland, so may be my old piano used this as well. Or the cheap interface (from china) was just broken.