Ok I might be a board level tech from the old days but sometimes I kick myself for going all in with something I have no idea about…Hopefully I;ve not done too much damage yet!!
Wife complained about a couple of keys being extra loud so I decided to have a look. If I understand the workings correctly then the carbon contacts under the rubber boot are slightly different in height so that one makes contact before the other thus the KS32 can determine how fast you have hit it and thus determine how hard and thus loud you make the sound. Is this correct? it would then mean that a bit of dirt in the dips above the rubber boot would be enough to cause the problem. This unit was pretty dirty so I cleaned all that externally. I then possibly made a mistake… I lifted the rubber boot in this area and very lightly cleaned with a cotton bud some of the carbon contacts and the board contacts with alcohol, I now have dead keys. Is it really possible I have removed too much of the carbon off the contact? Is this contact that sensitive. Any thoughts and knowledge would be appreciated or I’ll be in the doghouse if i can’t fix this when i get home tonight. Also curious about the two contact strips that one runs the length of the black and one the length of the white keys. Looks like a pressure sensitive strip and plugged into the board below the pitch wheel, how are these strips used and is it only on particular sounds. Thanks for any info.