Hello, my name is Rusty. You can fix this at home, it's a maintenance item that needs to be replaced. Please reply that you are able to use simple tools, and have basic electronics experience, and I'll tell you the repair process.
Absolutely, I'll tell you what needs to be done, and you can determine whether you can do the work, or if someone can do it for you. Give me just a few minutes to type this up. Thanks for your patience, I was on a meal break.
All of the screws on the bottom of the piano need to be removed.
This will allow you to flip up the top of the piano, and it will expose the backs of the keys.
There are velocity sensitive pads that the keys hit when you strike a key. They can go bad, but they are replaceable.
You can order them from Roland, 01792 702701.
They are little rubber pads, they are not complicated to replace. If you do the repair yourself, be sure to unplug the keyboard and turn the power switch on to drain any residual power.
Once you replace the pads, the keyboard should function normally. Let me know if you have any questions!
No, that's about it. It's a maintenance item, so they're fairly easy to get to. As long as you can use a screwdriver, and don't touch the electronics, you can do this repair. Roland will know which part number to send you, all of the pads are the same in the keyboard, so you don't even need to order a certain note. The notes are in the circuitry, the pads are just triggers for the circuitry.