I dismounted all the keyboard and cleaned off 21 years of dust.
The 4 front panel screw are kinda damaged they are no more holding the panel firmly. Anyway this is also on my ESQ1.
So I dismounted te keyboard and I cleaned everything with compressed air.
I pushed the OTIS chip with my finger it did not look loosebut I did it anyway.
I reassembled everything.
I Started the SD1, I did Hard Reset. I touched the C central note and... suddently it was te correct one!!!
IT got fixed I do not know for whatever reason, thank you very much for all the good hints you gave me!!
Anyway I noticed something strange on hte motherboard. The chip to the left side of the OTIS has a kind of shorten circuit
soldered on it. I did pictures.
http://imageshack.us/f/62/img0106gd.jpg/
http://imageshack.us/f/848/img0105nm.jpg/
Is this thing normal in your opinion ?
it looks weird to me. this is a socketed chip, by the way als othe OTIS is inserted into a socket and it is not soldered.
Definitely the aftertouch is not working at all... the firwmare is 3.00 and KPC is 2.33
could the problem of aftertouch be due to KPC version ?
thank you very much!!!
Rick