One of the two contacts for that key is not working. This could be dirty or damaged contact. They use a conductive rubber pills that the key presses against circuit board traces. One contact makes before the other and this is how velocity is sensed. Unless you are adept at this repair, I would recommend you take it in for repair. Chances are any part cost is negligible... mostly labor to open and access the contacts for cleaning. Clean ONLY with 99% isoprophyl alcohol and Q TIps... VERY GENTLY.
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Thank you fredy2. This indeed could be the problem. However,
I opened the same keyboard and noticed that there is a strip of felt that absorbes the impact of the weighted part of the hammer action. At the E4 key the felt has worn out which allows this hammer to rise higher than all the others. I'm guessing that this tricks the sensors into playing into playing full velocity.
Thus it could be fixed by replacing the felt.
Is this a possible solution?
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Thank you fredy2. This Indeed could be the problem. However,
When I opened up the very same Keyboard I noticed that there is a felt lining that absorbes the impact of the weighted part of the hamer-action. At the area of the E4 hamer - the felt has worn out which allows the weighted hammer to rise higher than the other keys. This provides ( i'm guessing ) the angle to allow both contacts to be pressed in close proximity thus tricking the velocity sensors into playing at full velocity.
So I assume that the problem could be fixed by replacing the felt strip.
Does this make sence?
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