Hi there,
I’ve bouthgt a Korg SP-170S several years ago and haven’t played it for a while. When I wanted to play it again the other day, some keys didn’t work. I thougth it was due to the aging of the contact strips (rubber caps under the keys). So I’ve changed them all.
After that, it turned out that all the C, E, F, A work, but none of D, G, B work (in all 7 octavas). There seems to be some systematic errors somewhere. Any ideas how to fix?
Thank you very much in advance!
BR
Hao