I'm a little green on keyboards so I don't know if this is a weird probem or what, I find it insteresting though.
When you play F sharp it also plays F. When you play A sharp it also plays A. When you play D it also plays D flat.
This is on all octavs both upper and lower, BUT not the pedals. Also on the lower board these keys sometimes repeat themselves. Also on the lower if y ou play the A sharp and the F sharp together they kinda appregriate. (sp)
Any ideas ? Since it is all octaves I am thinking maybe the micro or some l ittle diopdes near it, or do these things have a chip in between the board and the micro to scan it ? And possibly the pedals are a different system s o they are unaffected ? I think it only has like 14 keys or something like that down there.
I wouldn't mind knowoing more about the architecture of these things. (or d o they call that topology now)I mean, some of these keboard, we are talking full 88 here, I can't believe how few wires go to the keyboard itse;f, esp ecially when the thing is 24 note polyphonic.
In the old days I was in a keyboard and there was a wire for each key going to taps on a bank of 11 boards with a big coil on each one, adjustable of course for tuning. No master oscillator and divider chain.
Nother thing I wonder, working on these (relatively) cheap keyboards, am I going to find the innards of the really good ones similar ? Or are they sim ply a whole new ballgame.